The SAURON project – XV. Modes of star formation in early‐type galaxies and the evolution of the red sequence
Identifieur interne : 007156 ( Main/Exploration ); précédent : 007155; suivant : 007157The SAURON project – XV. Modes of star formation in early‐type galaxies and the evolution of the red sequence
Auteurs : Kristen L. Shapiro [États-Unis] ; Jesús Falc N-Barroso [Espagne, Pays-Bas] ; Glenn Van De Ven [États-Unis] ; P. Tim De Zeeuw [Allemagne, Pays-Bas] ; Marc Sarzi ; Roland Bacon [France] ; Alberto Bolatto [États-Unis] ; Michele Cappellari [Royaume-Uni] ; Darren Croton [Australie] ; Roger L. Davies [Royaume-Uni] ; Eric Emsellem [Allemagne, France] ; Onsi Fakhouri [États-Unis] ; Davor Krajnovi [Royaume-Uni] ; Harald Kuntschner [Allemagne] ; Richard M. Mcdermid [États-Unis] ; Reynier F. Peletier [Pays-Bas] ; Remco C. E. Van Den Bosch [États-Unis] ; Guido Van Der Wolk [Pays-Bas]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2010-03.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Auxiliary data, Bregman, Bressan, Cappellari, Cessation, Circumnuclear, Circumnuclear galaxies, Circumnuclear star formation, Circumnuclear starbursts, Circumnuclear systems, Coincident, Colours, Combes, Crocker, Disc, Disk galaxies, Duty cycle, Dynamics, Early type galaxies, Effective radius, Eld, Elliptical galaxies, Falc, Fazio, Formation rate, Galaxy, Galaxy evolution, Irac, Jeong, Journal compilation, Kennicutt, Kinematic, Kinematic structures, Kinematically, Kinematics, Krajnovi, Large radii, Lenticular, Lenticular galaxies, Luminosity, Mass fraction, Mass loss, Metallicity, Minor mergers, Mnras, Molecular gas, Morganti, Morphology, Outlier, Pahs, Paper xiii, Paper xvii, Parameter space, Photometry, Polycyclic aromatic hydrocarbons, Quiescent, Quiescent galaxies, Quiescent systems, Recent star formation, Rotating system, Rotators, Sample galaxies, Sarzi, Sauron, Sauron data, Sauron galaxies, Sauron project, Sauron sample, Sauron survey, Schinnerer, Schinnerer scoville, Scoville, Sequence galaxies, Sfrs, Shapiro, Slow rotators, Spiral galaxies, Spitzer, Spitzer data, Star, Star formation, Star formation activity, Star formation event, Star formation events, Star formation processes, Starforming, Stellar, Stellar discs, Stellar kinematic structures, Stellar population, Stellar populations, Stellar systems, Temi, Tracers, Upper limits, Uxes, Velocity dispersion, Widespread galaxies, Wolk, Xvii, Young stars.
- Teeft :
- Auxiliary data, Bregman, Bressan, Cappellari, Cessation, Circumnuclear, Circumnuclear galaxies, Circumnuclear star formation, Circumnuclear starbursts, Circumnuclear systems, Coincident, Colours, Combes, Crocker, Disc, Duty cycle, Effective radius, Eld, Falc, Fazio, Galaxy, Irac, Jeong, Journal compilation, Kennicutt, Kinematic, Kinematic structures, Kinematically, Kinematics, Krajnovi, Large radii, Lenticular, Lenticular galaxies, Luminosity, Mass fraction, Mass loss, Metallicity, Minor mergers, Mnras, Morganti, Morphology, Outlier, Pahs, Paper xiii, Paper xvii, Parameter space, Photometry, Quiescent, Quiescent galaxies, Quiescent systems, Recent star formation, Rotators, Sample galaxies, Sarzi, Sauron, Sauron data, Sauron galaxies, Sauron project, Sauron sample, Sauron survey, Schinnerer, Schinnerer scoville, Scoville, Sequence galaxies, Sfrs, Shapiro, Slow rotators, Spiral galaxies, Spitzer, Spitzer data, Star, Star formation, Star formation activity, Star formation event, Star formation events, Star formation processes, Starforming, Stellar, Stellar discs, Stellar kinematic structures, Stellar populations, Temi, Upper limits, Uxes, Velocity dispersion, Widespread galaxies, Wolk, Xvii, Young stars.
Abstract
We combine SAURON integral field data of a representative sample of local early‐type, red sequence galaxies with Spitzer/Infrared Array Camera imaging in order to investigate the presence of trace star formation in these systems. With the Spitzer data, we identify galaxies hosting low‐level star formation, as traced by polycyclic aromatic hydrocarbon emission, with measured star formation rates that compare well to those estimated from other tracers. This star formation proceeds according to established scaling relations with molecular gas content, in surface density regimes characteristic of disc galaxies and circumnuclear starbursts. We find that star formation in early‐type galaxies happens exclusively in fast‐rotating systems and occurs in two distinct modes. In the first, star formation is a diffuse process, corresponding to widespread young stellar populations and high molecular gas content. The equal presence of co‐ and counter‐rotating components in these systems strongly implies an external origin for the star‐forming gas, and we argue that these star formation events may be the final stages of (mostly minor) mergers that build up the bulges of red sequence lenticulars. In the second mode of star formation, the process is concentrated into well‐defined disc or ring morphologies, outside of which the host galaxies exhibit uniformly evolved stellar populations. This implies that these star formation events represent rejuvenations within previously quiescent stellar systems. Evidence for earlier star formation events similar to these in all fast‐rotating early‐type galaxies suggests that this mode of star formation may be common to all such galaxies, with a duty cycle of roughly 1/10, and likely contributes to the embedded, corotating inner stellar discs ubiquitous in this population.
Url:
- https://api.istex.fr/document/FA8FD45EECB66B1FBBADEDCFA6FA306A7E6F84E7/fulltext/pdf
- https://api.istex.fr/document/006E3844D6FD1271A4748DCC1FE024BDC56D7092/fulltext/pdf
DOI: 10.1111/j.1365-2966.2009.16111.x
Affiliations:
- Allemagne, Australie, Espagne, France, Pays-Bas, Royaume-Uni, États-Unis
- Angleterre, Californie, Hawaï, Maryland, New Jersey, Oxfordshire, Texas
- College Park (Maryland), Oxford
- Université d'Oxford, Université du Maryland
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Charles André, F‐69230 Saint‐Genis Laval; CNRS, UMR 5574; ENS de Lyon</wicri:regionArea><wicri:noRegion>UMR 5574; ENS de Lyon</wicri:noRegion><wicri:noRegion>UMR 5574; ENS de Lyon</wicri:noRegion></affiliation></author><author><name sortKey="Fakhouri, Onsi" sort="Fakhouri, Onsi" uniqKey="Fakhouri O" first="Onsi" last="Fakhouri">Onsi Fakhouri</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of California‐Berkeley, Berkeley, CA 94720</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Krajnovi, Davor" sort="Krajnovi, Davor" uniqKey="Krajnovi D" first="Davor" last="Krajnovi">Davor Krajnovi</name><affiliation wicri:level="4"><orgName type="university">Université d'Oxford</orgName><country>Royaume-Uni</country><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Kuntschner, Harald" sort="Kuntschner, Harald" uniqKey="Kuntschner H" first="Harald" last="Kuntschner">Harald Kuntschner</name><affiliation wicri:level="1"><country xml:lang="fr">Allemagne</country><wicri:regionArea>European Southern Observatory, Karl‐Schwarzschild‐Str. 2, D‐85748 Garching</wicri:regionArea><wicri:noRegion>85748 Garching</wicri:noRegion><wicri:noRegion>D‐85748 Garching</wicri:noRegion></affiliation></author><author><name sortKey="Mcdermid, Richard M" sort="Mcdermid, Richard M" uniqKey="Mcdermid R" first="Richard M." last="Mcdermid">Richard M. Mcdermid</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Gemini Observatory, Northern Operations Center, 670 N. A'ohoku Place, Hilo, HI 96720</wicri:regionArea><placeName><region type="state">Hawaï</region></placeName></affiliation></author><author><name sortKey="Peletier, Reynier F" sort="Peletier, Reynier F" uniqKey="Peletier R" first="Reynier F." last="Peletier">Reynier F. Peletier</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen</wicri:regionArea><wicri:noRegion>9700 AV Groningen</wicri:noRegion></affiliation></author><author><name sortKey="Van Den Bosch, Remco C E" sort="Van Den Bosch, Remco C E" uniqKey="Van Den Bosch R" first="Remco C. E." last="Van Den Bosch">Remco C. E. Van Den Bosch</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, University of Texas, Austin, TX 78712</wicri:regionArea><placeName><region type="state">Texas</region></placeName></affiliation></author><author><name sortKey="Van Der Wolk, Guido" sort="Van Der Wolk, Guido" uniqKey="Van Der Wolk G" first="Guido" last="Van Der Wolk">Guido Van Der Wolk</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen</wicri:regionArea><wicri:noRegion>9700 AV Groningen</wicri:noRegion></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 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cycle</term><term>Dynamics</term><term>Early type galaxies</term><term>Effective radius</term><term>Eld</term><term>Elliptical galaxies</term><term>Falc</term><term>Fazio</term><term>Formation rate</term><term>Galaxy</term><term>Galaxy evolution</term><term>Irac</term><term>Jeong</term><term>Journal compilation</term><term>Kennicutt</term><term>Kinematic</term><term>Kinematic structures</term><term>Kinematically</term><term>Kinematics</term><term>Krajnovi</term><term>Large radii</term><term>Lenticular</term><term>Lenticular galaxies</term><term>Luminosity</term><term>Mass fraction</term><term>Mass loss</term><term>Metallicity</term><term>Minor mergers</term><term>Mnras</term><term>Molecular gas</term><term>Morganti</term><term>Morphology</term><term>Outlier</term><term>Pahs</term><term>Paper xiii</term><term>Paper xvii</term><term>Parameter space</term><term>Photometry</term><term>Polycyclic aromatic hydrocarbons</term><term>Quiescent</term><term>Quiescent galaxies</term><term>Quiescent systems</term><term>Recent star formation</term><term>Rotating system</term><term>Rotators</term><term>Sample galaxies</term><term>Sarzi</term><term>Sauron</term><term>Sauron data</term><term>Sauron galaxies</term><term>Sauron project</term><term>Sauron sample</term><term>Sauron survey</term><term>Schinnerer</term><term>Schinnerer scoville</term><term>Scoville</term><term>Sequence galaxies</term><term>Sfrs</term><term>Shapiro</term><term>Slow rotators</term><term>Spiral galaxies</term><term>Spitzer</term><term>Spitzer data</term><term>Star</term><term>Star formation</term><term>Star formation activity</term><term>Star formation event</term><term>Star formation events</term><term>Star formation processes</term><term>Starforming</term><term>Stellar</term><term>Stellar discs</term><term>Stellar kinematic structures</term><term>Stellar population</term><term>Stellar populations</term><term>Stellar systems</term><term>Temi</term><term>Tracers</term><term>Upper limits</term><term>Uxes</term><term>Velocity dispersion</term><term>Widespread galaxies</term><term>Wolk</term><term>Xvii</term><term>Young stars</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Cinématique</term><term>Dynamique</term><term>Evolution galaxies</term><term>Formation stellaire</term><term>Galaxies disques</term><term>Galaxies elliptiques</term><term>Galaxies premier type</term><term>Gaz moléculaire</term><term>Hydrocarbure aromatique polycyclique</term><term>Morphologie</term><term>Population stellaire</term><term>Système stellaire</term><term>Système tournant</term><term>Taux formation</term><term>Traceur</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Auxiliary data</term><term>Bregman</term><term>Bressan</term><term>Cappellari</term><term>Cessation</term><term>Circumnuclear</term><term>Circumnuclear galaxies</term><term>Circumnuclear star formation</term><term>Circumnuclear starbursts</term><term>Circumnuclear systems</term><term>Coincident</term><term>Colours</term><term>Combes</term><term>Crocker</term><term>Disc</term><term>Duty cycle</term><term>Effective radius</term><term>Eld</term><term>Falc</term><term>Fazio</term><term>Galaxy</term><term>Irac</term><term>Jeong</term><term>Journal compilation</term><term>Kennicutt</term><term>Kinematic</term><term>Kinematic structures</term><term>Kinematically</term><term>Kinematics</term><term>Krajnovi</term><term>Large radii</term><term>Lenticular</term><term>Lenticular galaxies</term><term>Luminosity</term><term>Mass fraction</term><term>Mass loss</term><term>Metallicity</term><term>Minor mergers</term><term>Mnras</term><term>Morganti</term><term>Morphology</term><term>Outlier</term><term>Pahs</term><term>Paper xiii</term><term>Paper xvii</term><term>Parameter space</term><term>Photometry</term><term>Quiescent</term><term>Quiescent galaxies</term><term>Quiescent systems</term><term>Recent star formation</term><term>Rotators</term><term>Sample galaxies</term><term>Sarzi</term><term>Sauron</term><term>Sauron data</term><term>Sauron galaxies</term><term>Sauron project</term><term>Sauron sample</term><term>Sauron survey</term><term>Schinnerer</term><term>Schinnerer scoville</term><term>Scoville</term><term>Sequence galaxies</term><term>Sfrs</term><term>Shapiro</term><term>Slow rotators</term><term>Spiral galaxies</term><term>Spitzer</term><term>Spitzer data</term><term>Star</term><term>Star formation</term><term>Star formation activity</term><term>Star formation event</term><term>Star formation events</term><term>Star formation processes</term><term>Starforming</term><term>Stellar</term><term>Stellar discs</term><term>Stellar kinematic structures</term><term>Stellar populations</term><term>Temi</term><term>Upper limits</term><term>Uxes</term><term>Velocity dispersion</term><term>Widespread galaxies</term><term>Wolk</term><term>Xvii</term><term>Young stars</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We combine SAURON integral field data of a representative sample of local early‐type, red sequence galaxies with Spitzer/Infrared Array Camera imaging in order to investigate the presence of trace star formation in these systems. With the Spitzer data, we identify galaxies hosting low‐level star formation, as traced by polycyclic aromatic hydrocarbon emission, with measured star formation rates that compare well to those estimated from other tracers. This star formation proceeds according to established scaling relations with molecular gas content, in surface density regimes characteristic of disc galaxies and circumnuclear starbursts. We find that star formation in early‐type galaxies happens exclusively in fast‐rotating systems and occurs in two distinct modes. In the first, star formation is a diffuse process, corresponding to widespread young stellar populations and high molecular gas content. The equal presence of co‐ and counter‐rotating components in these systems strongly implies an external origin for the star‐forming gas, and we argue that these star formation events may be the final stages of (mostly minor) mergers that build up the bulges of red sequence lenticulars. In the second mode of star formation, the process is concentrated into well‐defined disc or ring morphologies, outside of which the host galaxies exhibit uniformly evolved stellar populations. This implies that these star formation events represent rejuvenations within previously quiescent stellar systems. Evidence for earlier star formation events similar to these in all fast‐rotating early‐type galaxies suggests that this mode of star formation may be common to all such galaxies, with a duty cycle of roughly 1/10, and likely contributes to the embedded, corotating inner stellar discs ubiquitous in this population.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Australie</li><li>Espagne</li><li>France</li><li>Pays-Bas</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Californie</li><li>Hawaï</li><li>Maryland</li><li>New Jersey</li><li>Oxfordshire</li><li>Texas</li></region><settlement><li>College Park (Maryland)</li><li>Oxford</li></settlement><orgName><li>Université d'Oxford</li><li>Université du Maryland</li></orgName></list><tree><noCountry><name sortKey="Sarzi, Marc" sort="Sarzi, Marc" uniqKey="Sarzi M" first="Marc" last="Sarzi">Marc Sarzi</name></noCountry><country name="États-Unis"><region name="Californie"><name sortKey="Shapiro, Kristen L" sort="Shapiro, Kristen L" uniqKey="Shapiro K" first="Kristen L." last="Shapiro">Kristen L. Shapiro</name></region><name sortKey="Bolatto, Alberto" sort="Bolatto, Alberto" uniqKey="Bolatto A" first="Alberto" last="Bolatto">Alberto Bolatto</name><name sortKey="Fakhouri, Onsi" sort="Fakhouri, Onsi" uniqKey="Fakhouri O" first="Onsi" last="Fakhouri">Onsi Fakhouri</name><name sortKey="Mcdermid, Richard M" sort="Mcdermid, Richard M" uniqKey="Mcdermid R" first="Richard M." last="Mcdermid">Richard M. Mcdermid</name><name sortKey="Shapiro, Kristen L" sort="Shapiro, Kristen L" uniqKey="Shapiro K" first="Kristen L." last="Shapiro">Kristen L. Shapiro</name><name sortKey="Van De Ven, Glenn" sort="Van De Ven, Glenn" uniqKey="Van De Ven G" first="Glenn" last="Van De Ven">Glenn Van De Ven</name><name sortKey="Van De Ven, Glenn" sort="Van De Ven, Glenn" uniqKey="Van De Ven G" first="Glenn" last="Van De Ven">Glenn Van De Ven</name><name sortKey="Van Den Bosch, Remco C E" sort="Van Den Bosch, Remco C E" uniqKey="Van Den Bosch R" first="Remco C. E." last="Van Den Bosch">Remco C. E. Van Den Bosch</name></country><country name="Espagne"><noRegion><name sortKey="Falc N Arroso, Jesus" sort="Falc N Arroso, Jesus" uniqKey="Falc N Arroso J" first="Jesús" last="Falc N-Barroso">Jesús Falc N-Barroso</name></noRegion></country><country name="Pays-Bas"><noRegion><name sortKey="Falc N Arroso, Jesus" sort="Falc N Arroso, Jesus" uniqKey="Falc N Arroso J" first="Jesús" last="Falc N-Barroso">Jesús Falc N-Barroso</name></noRegion><name sortKey="Peletier, Reynier F" sort="Peletier, Reynier F" uniqKey="Peletier R" first="Reynier F." last="Peletier">Reynier F. Peletier</name><name sortKey="Tim De Zeeuw, P" sort="Tim De Zeeuw, P" uniqKey="Tim De Zeeuw P" first="P." last="Tim De Zeeuw">P. Tim De Zeeuw</name><name sortKey="Van Der Wolk, Guido" sort="Van Der Wolk, Guido" uniqKey="Van Der Wolk G" first="Guido" last="Van Der Wolk">Guido Van Der Wolk</name></country><country name="Allemagne"><noRegion><name sortKey="Tim De Zeeuw, P" sort="Tim De Zeeuw, P" uniqKey="Tim De Zeeuw P" first="P." last="Tim De Zeeuw">P. Tim De Zeeuw</name></noRegion><name sortKey="Emsellem, Eric" sort="Emsellem, Eric" uniqKey="Emsellem E" first="Eric" last="Emsellem">Eric Emsellem</name><name sortKey="Kuntschner, Harald" sort="Kuntschner, Harald" uniqKey="Kuntschner H" first="Harald" last="Kuntschner">Harald Kuntschner</name></country><country name="France"><noRegion><name sortKey="Bacon, Roland" sort="Bacon, Roland" uniqKey="Bacon R" first="Roland" last="Bacon">Roland Bacon</name></noRegion><name sortKey="Emsellem, Eric" sort="Emsellem, Eric" uniqKey="Emsellem E" first="Eric" last="Emsellem">Eric Emsellem</name></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Cappellari, Michele" sort="Cappellari, Michele" uniqKey="Cappellari M" first="Michele" last="Cappellari">Michele Cappellari</name></region><name sortKey="Davies, Roger L" sort="Davies, Roger L" uniqKey="Davies R" first="Roger L." last="Davies">Roger L. Davies</name><name sortKey="Krajnovi, Davor" sort="Krajnovi, Davor" uniqKey="Krajnovi D" first="Davor" last="Krajnovi">Davor Krajnovi</name></country><country name="Australie"><noRegion><name sortKey="Croton, Darren" sort="Croton, Darren" uniqKey="Croton D" first="Darren" last="Croton">Darren Croton</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= The SAURON project – XV. Modes of star formation in early‐type galaxies and the evolution of the red sequence
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