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PTF10ops – a subluminous, normal‐width light curve Type Ia supernova in the middle of nowhere

Identifieur interne : 006358 ( Main/Exploration ); précédent : 006357; suivant : 006359

PTF10ops – a subluminous, normal‐width light curve Type Ia supernova in the middle of nowhere

Auteurs : K. Maguire [Royaume-Uni] ; M. Sullivan [Royaume-Uni] ; R. C. Thomas [États-Unis] ; P. Nugent [États-Unis] ; D. A. Howell [États-Unis] ; A. Gal-Yam [Israël] ; I. Arcavi [Israël] ; S. Ben-Ami [Israël] ; S. Blake [Royaume-Uni] ; J. Botyanszki [États-Unis] ; C. Buton [Allemagne] ; J. Cooke [Australie] ; R. S. Ellis [États-Unis] ; I. M. Hook [Royaume-Uni, Italie] ; M. M. Kasliwal [États-Unis] ; Y. Pan [Royaume-Uni] ; R. Pereira [France] ; P. Podsiadlowski [Royaume-Uni] ; A. Sternberg [Israël] ; N. Suzuki [États-Unis] ; D. Xu [Israël] ; O. Yaron [Israël] ; J. S. Bloom [États-Unis] ; S. B. Cenko [États-Unis] ; S. R. Kulkarni [États-Unis] ; N. Law [Canada] ; E. O. Ofek [États-Unis] ; D. Poznanski [États-Unis] ; R. M. Quimby [États-Unis]

Source :

RBID : ISTEX:EF4AA392C829B78146F1F0FCD6D4E82C0261078B

Descripteurs français

English descriptors

Abstract

PTF10ops is a Type Ia supernova (SN Ia), whose light curve and spectral properties place it outside the current SN Ia subtype classifications. Its spectra display the characteristic lines of subluminous SNe Ia, but it has a normal‐width light curve with a long rise time, typical of normal‐luminosity SNe Ia. The early‐time optical spectra of PTF10ops were modelled using a spectral fitting code and found to have all the lines typically seen in subluminous SNe Ia, without the need to invoke more uncommon elements. The host galaxy environment of PTF10ops is also unusual with no galaxy detected at the position of the SN down to an absolute limiting magnitude of r≥−12.0 mag, but a very massive galaxy is present at a separation of ∼148 kpc and at the same redshift as suggested by the SN spectral features. The progenitor of PTF10ops is most likely a very old star, possibly in a low‐metallicity environment, which affects its explosion mechanism and observational characteristics. PTF10ops does not easily fit into any of the current models of either subluminous or normal SN Ia progenitor channels.

Url:
DOI: 10.1111/j.1365-2966.2011.19526.x


Affiliations:


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Le document en format XML

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<term>Absolute magnitude</term>
<term>Absolute magnitude limit</term>
<term>Absorption features</term>
<term>Benetti</term>
<term>Bolometric</term>
<term>Bolometric luminosity</term>
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<term>Centre</term>
<term>Classification</term>
<term>Colour terms</term>
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<term>Faint host galaxies</term>
<term>Galactic extinction</term>
<term>Galaxies</term>
<term>Galaxy</term>
<term>Globular</term>
<term>Globular cluster</term>
<term>Globular clusters</term>
<term>Halo</term>
<term>Host galaxies</term>
<term>Host galaxy</term>
<term>Host galaxy extinction</term>
<term>Host velocities</term>
<term>Howell</term>
<term>Hubble space telescope</term>
<term>Input parameters</term>
<term>July</term>
<term>Large distance</term>
<term>Large distances</term>
<term>Lawrence berkeley</term>
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<term>Light curve width</term>
<term>Light curves</term>
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<term>Massive galaxy</term>
<term>Massive spiral galaxy</term>
<term>Massive star</term>
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<term>More details</term>
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<term>Nearby supernova factory</term>
<term>Normal luminosity</term>
<term>Normal template</term>
<term>Normal templates</term>
<term>Optical magnitudes</term>
<term>Optical spectra</term>
<term>Optical spectrum</term>
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<term>Peak luminosity</term>
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<term>Photospheric</term>
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<term>Rest frame</term>
<term>Rise time</term>
<term>Same redshift</term>
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<term>Secondary peak</term>
<term>Sifto</term>
<term>Similar properties</term>
<term>Space administration</term>
<term>Space telescope science institute</term>
<term>Spanish observatorio</term>
<term>Spectral</term>
<term>Spectral features</term>
<term>Spectral properties</term>
<term>Spectral template</term>
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<term>Stellar population</term>
<term>Stellar populations</term>
<term>Stretch value</term>
<term>Stretch values</term>
<term>Strong lines</term>
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<term>Subluminous events</term>
<term>Subluminous objects</term>
<term>Subluminous template</term>
<term>Substantial host galaxy extinction</term>
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<term>Telescope</term>
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<term>Template spectrum</term>
<term>Tertiary standards</term>
<term>Third epochs</term>
<term>Tting</term>
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<term>Courbe lumière</term>
<term>Déplacement vers le rouge</term>
<term>Galaxies</term>
<term>Luminosité</term>
<term>Magnitude absolue</term>
<term>Modèle</term>
<term>Métallicité</term>
<term>Position</term>
<term>Propriété spectrale</term>
<term>Spectre optique</term>
<term>Supernova type I</term>
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<term>Absolute magnitude</term>
<term>Absolute magnitude limit</term>
<term>Absorption features</term>
<term>Benetti</term>
<term>Bolometric</term>
<term>Bolometric luminosity</term>
<term>California institute</term>
<term>Centre</term>
<term>Colour terms</term>
<term>Cool photosphere</term>
<term>Cool spectra</term>
<term>Cumbres observatory</term>
<term>Distance modulus</term>
<term>Equivalent widths</term>
<term>Exotic explosion</term>
<term>Explosion mechanism</term>
<term>Extinction</term>
<term>Faint group</term>
<term>Faint host galaxies</term>
<term>Galactic extinction</term>
<term>Galaxy</term>
<term>Globular</term>
<term>Globular cluster</term>
<term>Globular clusters</term>
<term>Halo</term>
<term>Host galaxies</term>
<term>Host galaxy</term>
<term>Host galaxy extinction</term>
<term>Host velocities</term>
<term>Howell</term>
<term>Hubble space telescope</term>
<term>Input parameters</term>
<term>July</term>
<term>Large distance</term>
<term>Large distances</term>
<term>Lawrence berkeley</term>
<term>Light curve</term>
<term>Light curve width</term>
<term>Light curves</term>
<term>Luminosity</term>
<term>Magnitude space</term>
<term>Massive galaxies</term>
<term>Massive galaxy</term>
<term>Massive spiral galaxy</term>
<term>Massive star</term>
<term>Maximum light</term>
<term>Maximum magnitude</term>
<term>Metallicity</term>
<term>Mnras</term>
<term>Monthly notices</term>
<term>More detail</term>
<term>More details</term>
<term>Nancial support</term>
<term>National aeronautics</term>
<term>Nearby spiral galaxy</term>
<term>Nearby supernova factory</term>
<term>Normal luminosity</term>
<term>Normal template</term>
<term>Normal templates</term>
<term>Optical magnitudes</term>
<term>Optical spectra</term>
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<term>Pasp</term>
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<term>Peak luminosity</term>
<term>Peak magnitude</term>
<term>Photometry</term>
<term>Photospheric</term>
<term>Photospheric phase spectra</term>
<term>Physique nucl</term>
<term>Progenitor</term>
<term>Progenitor model</term>
<term>Progenitor star</term>
<term>Redshift</term>
<term>Rest frame</term>
<term>Rise time</term>
<term>Same redshift</term>
<term>Samuel oschin telescope</term>
<term>Santa barbara</term>
<term>Sdss system</term>
<term>Secondary maxima</term>
<term>Secondary peak</term>
<term>Sifto</term>
<term>Similar properties</term>
<term>Space administration</term>
<term>Space telescope science institute</term>
<term>Spanish observatorio</term>
<term>Spectral</term>
<term>Spectral features</term>
<term>Spectral properties</term>
<term>Spectral template</term>
<term>Spectrum</term>
<term>Spiral galaxy</term>
<term>Stellar</term>
<term>Stellar population</term>
<term>Stellar populations</term>
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<term>Stretch values</term>
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<term>Subluminous events</term>
<term>Subluminous objects</term>
<term>Subluminous template</term>
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<front>
<div type="abstract" xml:lang="en">PTF10ops is a Type Ia supernova (SN Ia), whose light curve and spectral properties place it outside the current SN Ia subtype classifications. Its spectra display the characteristic lines of subluminous SNe Ia, but it has a normal‐width light curve with a long rise time, typical of normal‐luminosity SNe Ia. The early‐time optical spectra of PTF10ops were modelled using a spectral fitting code and found to have all the lines typically seen in subluminous SNe Ia, without the need to invoke more uncommon elements. The host galaxy environment of PTF10ops is also unusual with no galaxy detected at the position of the SN down to an absolute limiting magnitude of r≥−12.0 mag, but a very massive galaxy is present at a separation of ∼148 kpc and at the same redshift as suggested by the SN spectral features. The progenitor of PTF10ops is most likely a very old star, possibly in a low‐metallicity environment, which affects its explosion mechanism and observational characteristics. PTF10ops does not easily fit into any of the current models of either subluminous or normal SN Ia progenitor channels.</div>
</front>
</TEI>
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<li>Australie</li>
<li>Canada</li>
<li>France</li>
<li>Israël</li>
<li>Italie</li>
<li>Royaume-Uni</li>
<li>États-Unis</li>
</country>
<region>
<li>Angleterre</li>
<li>Californie</li>
<li>District de Cologne</li>
<li>Ontario</li>
<li>Oxfordshire</li>
<li>Rhénanie-du-Nord-Westphalie</li>
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<settlement>
<li>Bonn</li>
<li>Oxford</li>
<li>Toronto</li>
</settlement>
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<li>Université de Toronto</li>
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<name sortKey="Maguire, K" sort="Maguire, K" uniqKey="Maguire K" first="K." last="Maguire">K. Maguire</name>
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<name sortKey="Podsiadlowski, P" sort="Podsiadlowski, P" uniqKey="Podsiadlowski P" first="P." last="Podsiadlowski">P. Podsiadlowski</name>
<name sortKey="Sullivan, M" sort="Sullivan, M" uniqKey="Sullivan M" first="M." last="Sullivan">M. Sullivan</name>
</country>
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<region name="Californie">
<name sortKey="Thomas, R C" sort="Thomas, R C" uniqKey="Thomas R" first="R. C." last="Thomas">R. C. Thomas</name>
</region>
<name sortKey="Bloom, J S" sort="Bloom, J S" uniqKey="Bloom J" first="J. S." last="Bloom">J. S. Bloom</name>
<name sortKey="Botyanszki, J" sort="Botyanszki, J" uniqKey="Botyanszki J" first="J." last="Botyanszki">J. Botyanszki</name>
<name sortKey="Botyanszki, J" sort="Botyanszki, J" uniqKey="Botyanszki J" first="J." last="Botyanszki">J. Botyanszki</name>
<name sortKey="Cenko, S B" sort="Cenko, S B" uniqKey="Cenko S" first="S. B." last="Cenko">S. B. Cenko</name>
<name sortKey="Ellis, R S" sort="Ellis, R S" uniqKey="Ellis R" first="R. S." last="Ellis">R. S. Ellis</name>
<name sortKey="Howell, D A" sort="Howell, D A" uniqKey="Howell D" first="D. A." last="Howell">D. A. Howell</name>
<name sortKey="Howell, D A" sort="Howell, D A" uniqKey="Howell D" first="D. A." last="Howell">D. A. Howell</name>
<name sortKey="Kasliwal, M M" sort="Kasliwal, M M" uniqKey="Kasliwal M" first="M. M." last="Kasliwal">M. M. Kasliwal</name>
<name sortKey="Kulkarni, S R" sort="Kulkarni, S R" uniqKey="Kulkarni S" first="S. R." last="Kulkarni">S. R. Kulkarni</name>
<name sortKey="Nugent, P" sort="Nugent, P" uniqKey="Nugent P" first="P." last="Nugent">P. Nugent</name>
<name sortKey="Nugent, P" sort="Nugent, P" uniqKey="Nugent P" first="P." last="Nugent">P. Nugent</name>
<name sortKey="Ofek, E O" sort="Ofek, E O" uniqKey="Ofek E" first="E. O." last="Ofek">E. O. Ofek</name>
<name sortKey="Poznanski, D" sort="Poznanski, D" uniqKey="Poznanski D" first="D." last="Poznanski">D. Poznanski</name>
<name sortKey="Poznanski, D" sort="Poznanski, D" uniqKey="Poznanski D" first="D." last="Poznanski">D. Poznanski</name>
<name sortKey="Quimby, R M" sort="Quimby, R M" uniqKey="Quimby R" first="R. M." last="Quimby">R. M. Quimby</name>
<name sortKey="Suzuki, N" sort="Suzuki, N" uniqKey="Suzuki N" first="N." last="Suzuki">N. Suzuki</name>
<name sortKey="Thomas, R C" sort="Thomas, R C" uniqKey="Thomas R" first="R. C." last="Thomas">R. C. Thomas</name>
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<country name="Israël">
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<name sortKey="Gal Am, A" sort="Gal Am, A" uniqKey="Gal Am A" first="A." last="Gal-Yam">A. Gal-Yam</name>
</noRegion>
<name sortKey="Arcavi, I" sort="Arcavi, I" uniqKey="Arcavi I" first="I." last="Arcavi">I. Arcavi</name>
<name sortKey="Ben Mi, S" sort="Ben Mi, S" uniqKey="Ben Mi S" first="S." last="Ben-Ami">S. Ben-Ami</name>
<name sortKey="Sternberg, A" sort="Sternberg, A" uniqKey="Sternberg A" first="A." last="Sternberg">A. Sternberg</name>
<name sortKey="Xu, D" sort="Xu, D" uniqKey="Xu D" first="D." last="Xu">D. Xu</name>
<name sortKey="Yaron, O" sort="Yaron, O" uniqKey="Yaron O" first="O." last="Yaron">O. Yaron</name>
</country>
<country name="Allemagne">
<region name="Rhénanie-du-Nord-Westphalie">
<name sortKey="Buton, C" sort="Buton, C" uniqKey="Buton C" first="C." last="Buton">C. Buton</name>
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</country>
<country name="Australie">
<noRegion>
<name sortKey="Cooke, J" sort="Cooke, J" uniqKey="Cooke J" first="J." last="Cooke">J. Cooke</name>
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<noRegion>
<name sortKey="Hook, I M" sort="Hook, I M" uniqKey="Hook I" first="I. M." last="Hook">I. M. Hook</name>
</noRegion>
</country>
<country name="France">
<noRegion>
<name sortKey="Pereira, R" sort="Pereira, R" uniqKey="Pereira R" first="R." last="Pereira">R. Pereira</name>
</noRegion>
</country>
<country name="Canada">
<region name="Ontario">
<name sortKey="Law, N" sort="Law, N" uniqKey="Law N" first="N." last="Law">N. Law</name>
</region>
</country>
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