SN 2004aw: confirming diversity of Type Ic supernovae
Identifieur interne : 000110 ( Istex/Curation ); précédent : 000109; suivant : 000111SN 2004aw: confirming diversity of Type Ic supernovae
Auteurs : S. Taubenberger [Allemagne] ; A. Pastorello [Allemagne] ; P. A. Mazzali [Allemagne, Italie, Japon] ; S. Valenti [Allemagne, Italie] ; G. Pignata [Chili] ; D. N. Sauer [Italie] ; A. Arbey [France, Allemagne] ; O. B Rnbantner [Allemagne] ; S. Benetti [Italie] ; A. Della Valle [Italie] ; J. Deng [République populaire de Chine, Japon] ; N. Elias-Rosa [Italie, Espagne] ; A. V. Filippenko [États-Unis] ; R. J. Foley [États-Unis] ; A. Goobar [Suède] ; R. Kotak [Allemagne] ; W. Li [États-Unis] ; P. Meikle ; J. Mendez [Espagne] ; F. Patat [Allemagne] ; E. Pian [Italie] ; C. Ries [Allemagne] ; P. Ruiz-Lapuente [Espagne, Allemagne] ; M. Salvo [Australie] ; V. Stanishev [Suède] ; M. Turatto [Italie] ; W. Hillebrandt [Allemagne]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2006-09-21.
English descriptors
- KwdEn :
- Absolute magnitudes, Absolute peak magnitudes, Analytical description, Arcsec, Asiago telescope, Aspherical explosion, Average decline rate, Bluer bands, Boles itagaki, Bolometric, Bolometric light curve, Bolometric light curves, Cafos site, Caha, Calar, Calar alto, Calar alto telescope, California institute, Clocchiatti, Colour, Colour corrections, Colour curves, Colour evolution, Corrections, Cygni features, Decline rate, Decline rates, Deng, Early phases, Effective diffusion time, Ejecta, Ejecta mass, Ejecta velocities, Ekar, Emission component, Emission features, Emission lines, Epoch, Expansion velocities, Expansion velocity, Extinction, Extinction values, Extragalactic database, Filippenko, Foley, Galactic reddening, Galama, Galaxy, Grbs, Great detail, Hamuy, High ejecta velocities, High velocities, Host galaxy, Iauc, Imaging telescope, Inaf osservatorio astronomico, Interstellar extinction, Journal compilation, Kait, Kait images, Keck, Kinetic energy, Kirshner, Large amount, Large telescope, Larger sample, Light curve, Light curves, Local group infall, Local sequence, Local sequence stars, Lter bands, Luminosity, Maeda, Maximum light, Mazzali, Mazzali lucy, Mckenzie schaefer, Measurement error, Mnras, Model spectra, Narrow core, National aeronautics, National science foundation, Nebular, Nebular phase, Nebular spectra, Nickel mass, Nomoto, Observatory, Optical bands, Optical spectra, Optical wavelengths, Osservatorio astronomico, Other hand, Outstanding object, Parallactic angle, Patat, Peak luminosity, Photometric, Photometric nights, Photometry, Physical parameters, Pixel, Pixel scale arcsec, Pixel scale arcsec caha, Possible association, Previous section, Progenitor, Progenitor mass, Progenitor star, Radioactive tail, Recession velocity, Recherche astronomique, Redder bands, Sauer, Siding spring observatory telescope, Similar epochs, Slow decline, Space administration, Spectral evolution, Spectroscopic, Spectroscopic evolution, Spectroscopic observations, Spectrum, Supernova, Tabasgo foundation, Taubenberger, Telescope, Telescope seeingc, Telescopio nazionale galileo, Telluric features, Template galaxy subtraction, Tokyo japan, Total bolometric, Total mass, Triplet, True bolometric luminosity, Ubvri light curves, Unit mass, Velocity evolution, Virgo cluster, Wainscoat cowie, Wavelength calibration, Wendelstein telescope, Wide variety, William herschel telescope, Yoshii.
- Teeft :
- Absolute magnitudes, Absolute peak magnitudes, Analytical description, Arcsec, Asiago telescope, Aspherical explosion, Average decline rate, Bluer bands, Boles itagaki, Bolometric, Bolometric light curve, Bolometric light curves, Cafos site, Caha, Calar, Calar alto, Calar alto telescope, California institute, Clocchiatti, Colour, Colour corrections, Colour curves, Colour evolution, Corrections, Cygni features, Decline rate, Decline rates, Deng, Early phases, Effective diffusion time, Ejecta, Ejecta mass, Ejecta velocities, Ekar, Emission component, Emission features, Emission lines, Epoch, Expansion velocities, Expansion velocity, Extinction, Extinction values, Extragalactic database, Filippenko, Foley, Galactic reddening, Galama, Galaxy, Grbs, Great detail, Hamuy, High ejecta velocities, High velocities, Host galaxy, Iauc, Imaging telescope, Inaf osservatorio astronomico, Interstellar extinction, Journal compilation, Kait, Kait images, Keck, Kinetic energy, Kirshner, Large amount, Large telescope, Larger sample, Light curve, Light curves, Local group infall, Local sequence, Local sequence stars, Lter bands, Luminosity, Maeda, Maximum light, Mazzali, Mazzali lucy, Mckenzie schaefer, Measurement error, Mnras, Model spectra, Narrow core, National aeronautics, National science foundation, Nebular, Nebular phase, Nebular spectra, Nickel mass, Nomoto, Observatory, Optical bands, Optical spectra, Optical wavelengths, Osservatorio astronomico, Other hand, Outstanding object, Parallactic angle, Patat, Peak luminosity, Photometric, Photometric nights, Photometry, Physical parameters, Pixel, Pixel scale arcsec, Pixel scale arcsec caha, Possible association, Previous section, Progenitor, Progenitor mass, Progenitor star, Radioactive tail, Recession velocity, Recherche astronomique, Redder bands, Sauer, Siding spring observatory telescope, Similar epochs, Slow decline, Space administration, Spectral evolution, Spectroscopic, Spectroscopic evolution, Spectroscopic observations, Spectrum, Supernova, Tabasgo foundation, Taubenberger, Telescope, Telescope seeingc, Telescopio nazionale galileo, Telluric features, Template galaxy subtraction, Tokyo japan, Total bolometric, Total mass, Triplet, True bolometric luminosity, Ubvri light curves, Unit mass, Velocity evolution, Virgo cluster, Wainscoat cowie, Wavelength calibration, Wendelstein telescope, Wide variety, William herschel telescope, Yoshii.
Abstract
Optical and near‐infrared (near‐IR) observations of the Type Ic supernova (SN Ic) 2004aw are presented, obtained from −3 to +413 d with respect to the B‐band maximum. The photometric evolution is characterized by a comparatively slow post‐maximum decline of the light curves. The peaks in redder bands are significantly delayed relative to the bluer bands, the I‐band maximum occurring 8.4 d later than that in B. With an absolute peak magnitude of −18.02 in the V band the SN can be considered fairly bright, but not exceptional. This also holds for the U through I bolometric light curve, where SN 2004aw has a position intermediate between SNe 2002ap and 1998bw. Spectroscopically SN 2004aw provides a link between a normal SN Ic like SN 1994I and the group of broad‐lined SNe Ic. The spectral evolution is rather slow, with a spectrum at day +64 being still predominantly photospheric. The shape of the nebular [O i]λλ6300, 6364 line indicates a highly aspherical explosion. Helium cannot be unambiguously identified in the spectra, even in the near‐IR. Using an analytical description of the light‐curve peak we find that the total mass of the ejecta in SN 2004aw is 3.5–8.0 M⊙, significantly larger than that in SN 1994I, although not as large as in SN 1998bw. The same model suggests that about 0.3 M⊙ of 56Ni has been synthesized in the explosion. No connection to a GRB can be firmly established.
Url:
DOI: 10.1111/j.1365-2966.2006.10776.x
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P. Meikle<affiliation><mods:affiliation>Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ</mods:affiliation><wicri:noCountry code="subField">2AZ</wicri:noCountry></affiliation>Le document en format XML
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Arbey</name><affiliation wicri:level="1"><mods:affiliation>Université de Lyon 1, Centre de Recherche Astronomique de Lyon, 9 Avenue Charles André, F‐69230 Saint‐Genis Laval, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Université de Lyon 1, Centre de Recherche Astronomique de Lyon, 9 Avenue Charles André, F‐69230 Saint‐Genis Laval</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="B Rnbantner, O" sort="B Rnbantner, O" uniqKey="B Rnbantner O" first="O." last="B Rnbantner">O. B Rnbantner</name><affiliation wicri:level="1"><mods:affiliation>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München</wicri:regionArea></affiliation></author><author><name sortKey="Benetti, S" sort="Benetti, S" uniqKey="Benetti S" first="S." last="Benetti">S. Benetti</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation></author><author><name sortKey="Della Valle, A" sort="Della Valle, A" uniqKey="Della Valle A" first="A." last="Della Valle">A. 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Deng</name><affiliation wicri:level="1"><mods:affiliation>National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China</mods:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Astronomy, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099</wicri:regionArea></affiliation></author><author><name sortKey="Elias Osa, N" sort="Elias Osa, N" uniqKey="Elias Osa N" first="N." last="Elias-Rosa">N. Elias-Rosa</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Universidad de La Laguna, Av. Astrofísico Francisco Sánchez s/n, E‐38206 La Laguna, Tenerife, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Universidad de La Laguna, Av. Astrofísico Francisco Sánchez s/n, E‐38206 La Laguna, Tenerife</wicri:regionArea></affiliation></author><author><name sortKey="Filippenko, A V" sort="Filippenko, A V" uniqKey="Filippenko A" first="A. V." last="Filippenko">A. V. Filippenko</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of California, Berkeley, CA 94720‐3411, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California, Berkeley, CA 94720‐3411</wicri:regionArea></affiliation></author><author><name sortKey="Foley, R J" sort="Foley, R J" uniqKey="Foley R" first="R. J." last="Foley">R. J. Foley</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of California, Berkeley, CA 94720‐3411, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California, Berkeley, CA 94720‐3411</wicri:regionArea></affiliation></author><author><name sortKey="Goobar, A" sort="Goobar, A" uniqKey="Goobar A" first="A." last="Goobar">A. Goobar</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm, Sweden</mods:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm</wicri:regionArea></affiliation></author><author><name sortKey="Kotak, R" sort="Kotak, R" uniqKey="Kotak R" first="R." last="Kotak">R. Kotak</name><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München</wicri:regionArea></affiliation><affiliation><mods:affiliation>Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ</mods:affiliation><wicri:noCountry code="subField">2AZ</wicri:noCountry></affiliation></author><author><name sortKey="Li, W" sort="Li, W" uniqKey="Li W" first="W." last="Li">W. Li</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of California, Berkeley, CA 94720‐3411, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California, Berkeley, CA 94720‐3411</wicri:regionArea></affiliation></author><author><name sortKey="Meikle, P" sort="Meikle, P" uniqKey="Meikle P" first="P." last="Meikle">P. Meikle</name><affiliation><mods:affiliation>Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ</mods:affiliation><wicri:noCountry code="subField">2AZ</wicri:noCountry></affiliation></author><author><name sortKey="Mendez, J" sort="Mendez, J" uniqKey="Mendez J" first="J." last="Mendez">J. Mendez</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Isaac Newton Group of Telescopes, 38700 Santa Cruz de La Palma, Islas Canarias, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Isaac Newton Group of Telescopes, 38700 Santa Cruz de La Palma, Islas Canarias</wicri:regionArea></affiliation></author><author><name sortKey="Patat, F" sort="Patat, F" uniqKey="Patat F" first="F." last="Patat">F. Patat</name><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="Pian, E" sort="Pian, E" uniqKey="Pian E" first="E." last="Pian">E. Pian</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste</wicri:regionArea></affiliation></author><author><name sortKey="Ries, C" sort="Ries, C" uniqKey="Ries C" first="C." last="Ries">C. Ries</name><affiliation wicri:level="1"><mods:affiliation>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München</wicri:regionArea></affiliation></author><author><name sortKey="Ruiz Apuente, P" sort="Ruiz Apuente, P" uniqKey="Ruiz Apuente P" first="P." last="Ruiz-Lapuente">P. Ruiz-Lapuente</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="Salvo, M" sort="Salvo, M" uniqKey="Salvo M" first="M." last="Salvo">M. Salvo</name><affiliation wicri:level="1"><mods:affiliation>RSAA, Australian National University, Cotter Road, Weston Creek, ACT 2611, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>RSAA, Australian National University, Cotter Road, Weston Creek, ACT 2611</wicri:regionArea></affiliation></author><author><name sortKey="Stanishev, V" sort="Stanishev, V" uniqKey="Stanishev V" first="V." last="Stanishev">V. Stanishev</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm, Sweden</mods:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm</wicri:regionArea></affiliation></author><author><name sortKey="Turatto, M" sort="Turatto, M" uniqKey="Turatto M" first="M." last="Turatto">M. Turatto</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation></author><author><name sortKey="Hillebrandt, W" sort="Hillebrandt, W" uniqKey="Hillebrandt W" first="W." last="Hillebrandt">W. Hillebrandt</name><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:05ECB3AF6B98074FFCC2660B720F4C95D1518E1D</idno><date when="2006" year="2006">2006</date><idno type="doi">10.1111/j.1365-2966.2006.10776.x</idno><idno type="url">https://api.istex.fr/document/05ECB3AF6B98074FFCC2660B720F4C95D1518E1D/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000110</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000110</idno><idno type="wicri:Area/Istex/Curation">000110</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main">SN 2004aw: confirming diversity of Type Ic supernovae<ref type="note" target="#fn7"><hi rend="superscript">★</hi></ref></title><author><name sortKey="Taubenberger, S" sort="Taubenberger, S" uniqKey="Taubenberger S" first="S." last="Taubenberger">S. Taubenberger</name><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: tauben@mpa‐garching.mpg.de</mods:affiliation><country wicri:rule="url">Allemagne</country></affiliation></author><author><name sortKey="Pastorello, A" sort="Pastorello, A" uniqKey="Pastorello A" first="A." last="Pastorello">A. Pastorello</name><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="Mazzali, P A" sort="Mazzali, P A" uniqKey="Mazzali P" first="P. A." last="Mazzali">P. A. Mazzali</name><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Astronomy, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099</wicri:regionArea></affiliation></author><author><name sortKey="Valenti, S" sort="Valenti, S" uniqKey="Valenti S" first="S." last="Valenti">S. Valenti</name><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Physics Department, University of Ferrara, 44100 Ferrara, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Physics Department, University of Ferrara, 44100 Ferrara</wicri:regionArea></affiliation></author><author><name sortKey="Pignata, G" sort="Pignata, G" uniqKey="Pignata G" first="G." last="Pignata">G. Pignata</name><affiliation wicri:level="1"><mods:affiliation>Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile</mods:affiliation><country xml:lang="fr">Chili</country><wicri:regionArea>Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22</wicri:regionArea></affiliation></author><author><name sortKey="Sauer, D N" sort="Sauer, D N" uniqKey="Sauer D" first="D. N." last="Sauer">D. N. Sauer</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste</wicri:regionArea></affiliation></author><author><name sortKey="Arbey, A" sort="Arbey, A" uniqKey="Arbey A" first="A." last="Arbey">A. Arbey</name><affiliation wicri:level="1"><mods:affiliation>Université de Lyon 1, Centre de Recherche Astronomique de Lyon, 9 Avenue Charles André, F‐69230 Saint‐Genis Laval, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Université de Lyon 1, Centre de Recherche Astronomique de Lyon, 9 Avenue Charles André, F‐69230 Saint‐Genis Laval</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="B Rnbantner, O" sort="B Rnbantner, O" uniqKey="B Rnbantner O" first="O." last="B Rnbantner">O. B Rnbantner</name><affiliation wicri:level="1"><mods:affiliation>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München</wicri:regionArea></affiliation></author><author><name sortKey="Benetti, S" sort="Benetti, S" uniqKey="Benetti S" first="S." last="Benetti">S. Benetti</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation></author><author><name sortKey="Della Valle, A" sort="Della Valle, A" uniqKey="Della Valle A" first="A." last="Della Valle">A. Della Valle</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation></author><author><name sortKey="Deng, J" sort="Deng, J" uniqKey="Deng J" first="J." last="Deng">J. Deng</name><affiliation wicri:level="1"><mods:affiliation>National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China</mods:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Astronomy, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099, Japan</mods:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo‐ku, Tokyo 113‐0099</wicri:regionArea></affiliation></author><author><name sortKey="Elias Osa, N" sort="Elias Osa, N" uniqKey="Elias Osa N" first="N." last="Elias-Rosa">N. Elias-Rosa</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Universidad de La Laguna, Av. Astrofísico Francisco Sánchez s/n, E‐38206 La Laguna, Tenerife, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Universidad de La Laguna, Av. Astrofísico Francisco Sánchez s/n, E‐38206 La Laguna, Tenerife</wicri:regionArea></affiliation></author><author><name sortKey="Filippenko, A V" sort="Filippenko, A V" uniqKey="Filippenko A" first="A. V." last="Filippenko">A. V. Filippenko</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of California, Berkeley, CA 94720‐3411, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California, Berkeley, CA 94720‐3411</wicri:regionArea></affiliation></author><author><name sortKey="Foley, R J" sort="Foley, R J" uniqKey="Foley R" first="R. J." last="Foley">R. J. Foley</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of California, Berkeley, CA 94720‐3411, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California, Berkeley, CA 94720‐3411</wicri:regionArea></affiliation></author><author><name sortKey="Goobar, A" sort="Goobar, A" uniqKey="Goobar A" first="A." last="Goobar">A. Goobar</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm, Sweden</mods:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm</wicri:regionArea></affiliation></author><author><name sortKey="Kotak, R" sort="Kotak, R" uniqKey="Kotak R" first="R." last="Kotak">R. Kotak</name><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München</wicri:regionArea></affiliation><affiliation><mods:affiliation>Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ</mods:affiliation></affiliation></author><author><name sortKey="Li, W" sort="Li, W" uniqKey="Li W" first="W." last="Li">W. Li</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of California, Berkeley, CA 94720‐3411, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California, Berkeley, CA 94720‐3411</wicri:regionArea></affiliation></author><author><name sortKey="Meikle, P" sort="Meikle, P" uniqKey="Meikle P" first="P." last="Meikle">P. Meikle</name><affiliation><mods:affiliation>Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ</mods:affiliation><wicri:noCountry code="subField">2AZ</wicri:noCountry></affiliation></author><author><name sortKey="Mendez, J" sort="Mendez, J" uniqKey="Mendez J" first="J." last="Mendez">J. Mendez</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Isaac Newton Group of Telescopes, 38700 Santa Cruz de La Palma, Islas Canarias, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Isaac Newton Group of Telescopes, 38700 Santa Cruz de La Palma, Islas Canarias</wicri:regionArea></affiliation></author><author><name sortKey="Patat, F" sort="Patat, F" uniqKey="Patat F" first="F." last="Patat">F. Patat</name><affiliation wicri:level="1"><mods:affiliation>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>European Southern Observatory (ESO), Karl‐Schwarzschild‐Str. 2, 85748 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="Pian, E" sort="Pian, E" uniqKey="Pian E" first="E." last="Pian">E. Pian</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Trieste, Via Tiepolo 11, 34131 Trieste</wicri:regionArea></affiliation></author><author><name sortKey="Ries, C" sort="Ries, C" uniqKey="Ries C" first="C." last="Ries">C. Ries</name><affiliation wicri:level="1"><mods:affiliation>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Universitäts‐Sternwarte München, Scheinerstr. 1, 81679 München</wicri:regionArea></affiliation></author><author><name sortKey="Ruiz Apuente, P" sort="Ruiz Apuente, P" uniqKey="Ruiz Apuente P" first="P." last="Ruiz-Lapuente">P. Ruiz-Lapuente</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona, Spain</mods:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Department of Astronomy, University of Barcelona, Martí i Franques 1, E‐08028 Barcelona</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author><author><name sortKey="Salvo, M" sort="Salvo, M" uniqKey="Salvo M" first="M." last="Salvo">M. Salvo</name><affiliation wicri:level="1"><mods:affiliation>RSAA, Australian National University, Cotter Road, Weston Creek, ACT 2611, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>RSAA, Australian National University, Cotter Road, Weston Creek, ACT 2611</wicri:regionArea></affiliation></author><author><name sortKey="Stanishev, V" sort="Stanishev, V" uniqKey="Stanishev V" first="V." last="Stanishev">V. Stanishev</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm, Sweden</mods:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Physics, Stockholm University, AlbaNova University Center, SE‐10691 Stockholm</wicri:regionArea></affiliation></author><author><name sortKey="Turatto, M" sort="Turatto, M" uniqKey="Turatto M" first="M." last="Turatto">M. Turatto</name><affiliation wicri:level="1"><mods:affiliation>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova</wicri:regionArea></affiliation></author><author><name sortKey="Hillebrandt, W" sort="Hillebrandt, W" uniqKey="Hillebrandt W" first="W." last="Hillebrandt">W. Hillebrandt</name><affiliation wicri:level="1"><mods:affiliation>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Str. 1, 85741 Garching bei München</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><biblScope unit="vol">371</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="1459">1459</biblScope><biblScope unit="page" to="1477">1477</biblScope><biblScope unit="page-count">19</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2006-09-21">2006-09-21</date></imprint><idno type="ISSN">0035-8711</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absolute magnitudes</term><term>Absolute peak magnitudes</term><term>Analytical description</term><term>Arcsec</term><term>Asiago telescope</term><term>Aspherical explosion</term><term>Average decline rate</term><term>Bluer bands</term><term>Boles itagaki</term><term>Bolometric</term><term>Bolometric light curve</term><term>Bolometric light curves</term><term>Cafos site</term><term>Caha</term><term>Calar</term><term>Calar alto</term><term>Calar alto telescope</term><term>California institute</term><term>Clocchiatti</term><term>Colour</term><term>Colour corrections</term><term>Colour curves</term><term>Colour evolution</term><term>Corrections</term><term>Cygni features</term><term>Decline rate</term><term>Decline rates</term><term>Deng</term><term>Early phases</term><term>Effective diffusion time</term><term>Ejecta</term><term>Ejecta mass</term><term>Ejecta velocities</term><term>Ekar</term><term>Emission component</term><term>Emission features</term><term>Emission lines</term><term>Epoch</term><term>Expansion velocities</term><term>Expansion velocity</term><term>Extinction</term><term>Extinction values</term><term>Extragalactic database</term><term>Filippenko</term><term>Foley</term><term>Galactic reddening</term><term>Galama</term><term>Galaxy</term><term>Grbs</term><term>Great detail</term><term>Hamuy</term><term>High ejecta velocities</term><term>High velocities</term><term>Host galaxy</term><term>Iauc</term><term>Imaging telescope</term><term>Inaf osservatorio astronomico</term><term>Interstellar extinction</term><term>Journal compilation</term><term>Kait</term><term>Kait images</term><term>Keck</term><term>Kinetic energy</term><term>Kirshner</term><term>Large amount</term><term>Large telescope</term><term>Larger sample</term><term>Light curve</term><term>Light curves</term><term>Local group infall</term><term>Local sequence</term><term>Local sequence stars</term><term>Lter bands</term><term>Luminosity</term><term>Maeda</term><term>Maximum light</term><term>Mazzali</term><term>Mazzali lucy</term><term>Mckenzie schaefer</term><term>Measurement error</term><term>Mnras</term><term>Model spectra</term><term>Narrow core</term><term>National aeronautics</term><term>National science foundation</term><term>Nebular</term><term>Nebular phase</term><term>Nebular spectra</term><term>Nickel mass</term><term>Nomoto</term><term>Observatory</term><term>Optical bands</term><term>Optical spectra</term><term>Optical wavelengths</term><term>Osservatorio astronomico</term><term>Other hand</term><term>Outstanding object</term><term>Parallactic angle</term><term>Patat</term><term>Peak luminosity</term><term>Photometric</term><term>Photometric nights</term><term>Photometry</term><term>Physical parameters</term><term>Pixel</term><term>Pixel scale arcsec</term><term>Pixel scale arcsec caha</term><term>Possible association</term><term>Previous section</term><term>Progenitor</term><term>Progenitor mass</term><term>Progenitor star</term><term>Radioactive tail</term><term>Recession velocity</term><term>Recherche astronomique</term><term>Redder bands</term><term>Sauer</term><term>Siding spring observatory telescope</term><term>Similar epochs</term><term>Slow decline</term><term>Space administration</term><term>Spectral evolution</term><term>Spectroscopic</term><term>Spectroscopic evolution</term><term>Spectroscopic observations</term><term>Spectrum</term><term>Supernova</term><term>Tabasgo foundation</term><term>Taubenberger</term><term>Telescope</term><term>Telescope seeingc</term><term>Telescopio nazionale galileo</term><term>Telluric features</term><term>Template galaxy subtraction</term><term>Tokyo japan</term><term>Total bolometric</term><term>Total mass</term><term>Triplet</term><term>True bolometric luminosity</term><term>Ubvri light curves</term><term>Unit mass</term><term>Velocity evolution</term><term>Virgo cluster</term><term>Wainscoat cowie</term><term>Wavelength calibration</term><term>Wendelstein telescope</term><term>Wide variety</term><term>William herschel telescope</term><term>Yoshii</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Absolute magnitudes</term><term>Absolute peak magnitudes</term><term>Analytical description</term><term>Arcsec</term><term>Asiago telescope</term><term>Aspherical explosion</term><term>Average decline rate</term><term>Bluer bands</term><term>Boles itagaki</term><term>Bolometric</term><term>Bolometric light curve</term><term>Bolometric light curves</term><term>Cafos site</term><term>Caha</term><term>Calar</term><term>Calar alto</term><term>Calar alto telescope</term><term>California institute</term><term>Clocchiatti</term><term>Colour</term><term>Colour corrections</term><term>Colour curves</term><term>Colour evolution</term><term>Corrections</term><term>Cygni features</term><term>Decline rate</term><term>Decline rates</term><term>Deng</term><term>Early phases</term><term>Effective diffusion time</term><term>Ejecta</term><term>Ejecta mass</term><term>Ejecta velocities</term><term>Ekar</term><term>Emission component</term><term>Emission features</term><term>Emission lines</term><term>Epoch</term><term>Expansion velocities</term><term>Expansion velocity</term><term>Extinction</term><term>Extinction values</term><term>Extragalactic database</term><term>Filippenko</term><term>Foley</term><term>Galactic reddening</term><term>Galama</term><term>Galaxy</term><term>Grbs</term><term>Great detail</term><term>Hamuy</term><term>High ejecta velocities</term><term>High velocities</term><term>Host galaxy</term><term>Iauc</term><term>Imaging telescope</term><term>Inaf osservatorio astronomico</term><term>Interstellar extinction</term><term>Journal compilation</term><term>Kait</term><term>Kait images</term><term>Keck</term><term>Kinetic energy</term><term>Kirshner</term><term>Large amount</term><term>Large telescope</term><term>Larger sample</term><term>Light curve</term><term>Light curves</term><term>Local group infall</term><term>Local sequence</term><term>Local sequence stars</term><term>Lter bands</term><term>Luminosity</term><term>Maeda</term><term>Maximum light</term><term>Mazzali</term><term>Mazzali lucy</term><term>Mckenzie schaefer</term><term>Measurement error</term><term>Mnras</term><term>Model spectra</term><term>Narrow core</term><term>National aeronautics</term><term>National science foundation</term><term>Nebular</term><term>Nebular phase</term><term>Nebular spectra</term><term>Nickel mass</term><term>Nomoto</term><term>Observatory</term><term>Optical bands</term><term>Optical spectra</term><term>Optical wavelengths</term><term>Osservatorio astronomico</term><term>Other hand</term><term>Outstanding object</term><term>Parallactic angle</term><term>Patat</term><term>Peak luminosity</term><term>Photometric</term><term>Photometric nights</term><term>Photometry</term><term>Physical parameters</term><term>Pixel</term><term>Pixel scale arcsec</term><term>Pixel scale arcsec caha</term><term>Possible association</term><term>Previous section</term><term>Progenitor</term><term>Progenitor mass</term><term>Progenitor star</term><term>Radioactive tail</term><term>Recession velocity</term><term>Recherche astronomique</term><term>Redder bands</term><term>Sauer</term><term>Siding spring observatory telescope</term><term>Similar epochs</term><term>Slow decline</term><term>Space administration</term><term>Spectral evolution</term><term>Spectroscopic</term><term>Spectroscopic evolution</term><term>Spectroscopic observations</term><term>Spectrum</term><term>Supernova</term><term>Tabasgo foundation</term><term>Taubenberger</term><term>Telescope</term><term>Telescope seeingc</term><term>Telescopio nazionale galileo</term><term>Telluric features</term><term>Template galaxy subtraction</term><term>Tokyo japan</term><term>Total bolometric</term><term>Total mass</term><term>Triplet</term><term>True bolometric luminosity</term><term>Ubvri light curves</term><term>Unit mass</term><term>Velocity evolution</term><term>Virgo cluster</term><term>Wainscoat cowie</term><term>Wavelength calibration</term><term>Wendelstein telescope</term><term>Wide variety</term><term>William herschel telescope</term><term>Yoshii</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Optical and near‐infrared (near‐IR) observations of the Type Ic supernova (SN Ic) 2004aw are presented, obtained from −3 to +413 d with respect to the B‐band maximum. The photometric evolution is characterized by a comparatively slow post‐maximum decline of the light curves. The peaks in redder bands are significantly delayed relative to the bluer bands, the I‐band maximum occurring 8.4 d later than that in B. With an absolute peak magnitude of −18.02 in the V band the SN can be considered fairly bright, but not exceptional. This also holds for the U through I bolometric light curve, where SN 2004aw has a position intermediate between SNe 2002ap and 1998bw. Spectroscopically SN 2004aw provides a link between a normal SN Ic like SN 1994I and the group of broad‐lined SNe Ic. The spectral evolution is rather slow, with a spectrum at day +64 being still predominantly photospheric. The shape of the nebular [O i]λλ6300, 6364 line indicates a highly aspherical explosion. Helium cannot be unambiguously identified in the spectra, even in the near‐IR. Using an analytical description of the light‐curve peak we find that the total mass of the ejecta in SN 2004aw is 3.5–8.0 M⊙, significantly larger than that in SN 1994I, although not as large as in SN 1998bw. The same model suggests that about 0.3 M⊙ of 56Ni has been synthesized in the explosion. No connection to a GRB can be firmly established.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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