The Nature of Massive Transition Galaxies in CANDELS, GAMA, and Cosmological Simulations
| Autor: | Dale D. Kocevski, Arjen van der Wel, Hassen M. Yesuf, Guillermo Barro, Jeffrey A. Newman, Edward N. Taylor, Yu Lu, Henry C. Ferguson, Allison Kirkpatrick, Joel R. Primack, Anton M. Koekemoer, Sandra M. Faber, Norman A. Grogin, Kameswara Bharadwaj Mantha, Eric F. Bell, Jerome J. Fang, Stijn Wuyts, Viraj Pandya, Daniel H. McIntosh, Ryan Brennan, Casey Papovich, David C. Koo, Bahram Mobasher, Ena Choi, Rachel S. Somerville, Camilla Pacifici, Peter Behroozi, Avishai Dekel |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
ACTIVE GALACTIC NUCLEI
LESS-THAN 3 Active galactic nucleus bulges [galaxies] formation [galaxies] Stellar mass MODELS CONFRONT OBSERVATIONS Population FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics CATALOGS SOURCE IDENTIFICATION SIMILAR-TO 1 01 natural sciences 0103 physical sciences STAR-FORMING GALAXIES Galaxy formation and evolution education 010303 astronomy & astrophysics evolution [galaxies] Astrophysics::Galaxy Astrophysics Physics education.field_of_study Supermassive black hole 010308 nuclear & particles physics POST-STARBURST GALAXIES Astronomy Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Redshift Galaxy Physics and Astronomy STELLAR POPULATION SYNTHESIS Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) COLOR-MAGNITUDE DIAGRAM structure [galaxies] DIGITAL SKY SURVEY Halo star formation [galaxies] high-redshift [galaxies] |
| Zdroj: | Pandya, V, Brennan, R, Somerville, R S, Choi, E, Barro, G, Wuyts, S, Taylor, E N, Behroozi, P, Kirkpatrick, A, Faber, S M, Primack, J R, Koo, D C, McIntosh, D H, Kocevski, D D, Bell, E F, Dekel, A, Fang, J J, Ferguson, H C, Grogin, N A, Koekemoer, A M, Lu, Y, Mantha, K, Mobasher, B, Newman, J A, Pacifici, C, Papovich, C J, van der Wel, A & Yesuf, H M 2017, ' The nature of massive transition galaxies in CANDELS, GAMA and cosmological simulations ', Monthly Notices of the Royal Astronomical Society, vol. 472, no. 2, pp. 2054-2084 . https://doi.org/10.1093/mnras/stx2027 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
| ISSN: | 0035-8711 1365-2966 |
| Popis: | We explore observational and theoretical constraints on how galaxies might transition between the "star-forming main sequence" (SFMS) and varying "degrees of quiescence" out to $z=3$. Our analysis is focused on galaxies with stellar mass $M_*>10^{10}M_{\odot}$, and is enabled by GAMA and CANDELS observations, a semi-analytic model (SAM) of galaxy formation, and a cosmological hydrodynamical "zoom in" simulation with momentum-driven AGN feedback. In both the observations and the SAM, transition galaxies tend to have intermediate S��rsic indices, half-light radii, and surface stellar mass densities compared to star-forming and quiescent galaxies out to $z=3$. We place an observational upper limit on the average population transition timescale as a function of redshift, finding that the average high-redshift galaxy is on a "fast track" for quenching whereas the average low-redshift galaxy is on a "slow track" for quenching. We qualitatively identify four physical origin scenarios for transition galaxies in the SAM: oscillations on the SFMS, slow quenching, fast quenching, and rejuvenation. Quenching timescales in both the SAM and the hydrodynamical simulation are not fast enough to reproduce the quiescent population that we observe at $z\sim3$. In the SAM, we do not find a clear-cut morphological dependence of quenching timescales, but we do predict that the mean stellar ages, cold gas fractions, SMBH masses, and halo masses of transition galaxies tend to be intermediate relative to those of star-forming and quiescent galaxies at $z Re-submitted to MNRAS after referee revisions, the main change is that the paper has been significantly streamlined and is shorter (25 pages and 8 figures, without appendices) |
| Databáze: | OpenAIRE |
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