Gas fraction and star formation efficiency at z < 1.0
| hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
| dc.contributor.author | COMBES, F. | |
| hal.structure.identifier | Observatorio Astronomico Nacional, Madrid | |
| dc.contributor.author | GARCIA-BURILLO, S. | |
| hal.structure.identifier | FORMATION STELLAIRE 2013 | |
| dc.contributor.author | BRAINE, J. | |
| dc.contributor.author | SCHINNERER, E. | |
| hal.structure.identifier | Max-Planck-Institut für Astronomie [MPIA] | |
| dc.contributor.author | WALTER, F. | |
| hal.structure.identifier | Department of Physics | |
| dc.contributor.author | COLINA, L. | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 0004-6361 | |
| dc.description.abstractEn | After new observations of 39 galaxies at z = 0.6-1.0 obtained at the IRAM 30m telescope, we present our full CO line survey covering the redshift range 0.2 < z < 1. Our aim is to determine the driving factors accounting for the steep decline in the star formation rate during this epoch. We study both the gas fraction, defined as Mgas/(Mgas+Mstar), and the star formation efficiency (SFE) defined by the ratio between far-infrared luminosity and molecular gas mass (LFIR/M(H2), i.e. a measure for the inverse of the gas depletion time. The sources are selected to be ultra-luminous infrared galaxies (ULIRGs), with LFIR greater than 10^12 Lo and experiencing starbursts. When we adopt a standard ULIRG CO-to-H2 conversion factor, their molecular gas depletion time is less than 100 Myr. Our full survey has now filled the gap of CO observations in the 0.2 | |
| dc.language.iso | en | |
| dc.publisher | EDP Sciences | |
| dc.subject.en | radio lines: galaxies | |
| dc.subject.en | galaxies: starburst | |
| dc.subject.en | galaxies: high-redshift | |
| dc.subject.en | galaxies: ISM | |
| dc.title.en | Gas fraction and star formation efficiency at z < 1.0 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1051/0004-6361/201220392 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.identifier.arxiv | 1209.3665 | |
| bordeaux.journal | Astronomy and Astrophysics - A&A | |
| bordeaux.page | id.A41 | |
| bordeaux.volume | 550 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00822765 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00822765v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2013&rft.volume=550&rft.spage=id.A41&rft.epage=id.A41&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=COMBES,%20F.&GARCIA-BURILLO,%20S.&BRAINE,%20J.&SCHINNERER,%20E.&WALTER,%20F.&rft.genre=article |
Fichier(s) constituant ce document
| Fichiers | Taille | Format | Vue |
|---|---|---|---|
|
Il n'y a pas de fichiers associés à ce document. |
|||