The VANDELS survey: the star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3

被引：117

作者：

Carnall, A. C. ^{[1
]}

McLure, R. J. ^{[1
]}

Dunlop, J. S. ^{[1
]}

Cullen, F. ^{[1
]}

McLeod, D. J. ^{[1
]}

Wild, V ^{[2
]}

Johnson, B. D. ^{[3
]}

Appleby, S. ^{[1
]}

Dave, R. ^{[1
,4
,5
]}

Amorin, R. ^{[6
,7
]}

Bolzonella, M. ^{[8
]}

Castellano, M. ^{[9
]}

Cimatti, A. ^{[10
,11
]}

Cucciati, O. ^{[8
]}

GargiuloI, A. ^{[12
]}

Garilli, B. ^{[12
]}

Marchi, F. ^{[9
]}

Pentericci, L. ^{[9
]}

Pozzetti, L. ^{[8
]}

Schreiber, C. ^{[13
]}

Talia, M. ^{[8
,10
]}

Zamorani, G. ^{[8
]}

机构：

[1] Univ Edinburgh, Inst Astron, Royal Observ, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland

[2] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

[3] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[4] Univ Western Cape, Dept Phys & Astron, ZA-7535 Cape Town, South Africa

[5] South African Astron Observ, ZA-7925 Cape Town, South Africa

[6] Univ La Serena, Inst Invest Multidisciplinar Ciencia & Tecnol, La Serena 1305, Chile

[7] Univ La Serena, Dept Fis & Astron, La Serena 1200, Chile

[8] INAF OAS Bologna, Via P Gobetti 93-3, I-40129 Bologna, Italy

[9] INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy

[10] Univ Bologna, Dept Phys & Astron DIFA, I-40129 Bologna, Italy

[11] INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy

[12] INAF IASF Milano, Via A Corti 12, I-20133 Milan, Italy

[13] Univ Oxford, Dept Phys, Keble Rd, Oxford OX1 3RH, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 490卷 / 01期

基金：

英国科学技术设施理事会;

关键词：

methods: statistical; galaxies: evolution; galaxies: star formation; POST-STARBURST GALAXIES; ACTIVE GALACTIC NUCLEI; SPECTRAL ENERGY-DISTRIBUTIONS; OLD STELLAR POPULATIONS; DIGITAL SKY SURVEY; FORMING GALAXIES; ATLAS(3D) PROJECT; RED-SEQUENCE; AGN FEEDBACK; BLACK-HOLES;

D O I：

10.1093/mnras/stz2544

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a Bayesian full-spectral-fitting analysis of 75 massive (M-* > 10(10.3) M-circle dot) UVJ-selected galaxies at redshifts of 1.0 < z < 1.3, combining extremely deep rest-frame ultraviolet spectroscopy from VANDELS with multiwavelength photometry. By the use of a sophisticated physical plus systematic uncertainties model, constructed within the BAGPIPES code, we place strong constraints on the star-formation histories (SFHs) of individual objects. We first constrain the stellar mass versus stellar age relationship, finding a steep trend towards earlier average formation time with increasing stellar mass (downsizing) of 1.48(-0.39)(+0.34) Gyr per decade in mass, although this shows signs of flattening at M-* > 10(11) M-circle dot. We show that this is consistent with other spectroscopic studies from 0 < z < 2. This relationship places strong constraints on the AGN-feedback models used in cosmological simulations. We demonstrate that, although the relationships predicted by SIMBA and ILLUSTRISTNG agree well with observations at z = 0.1, they are too shallow at z = 1, predicting an evolution of less than or similar to 0.5 Gyr per decade in mass. Secondly, we consider the connections between green-valley, post-starburst, and quiescent galaxies, using our inferred SFH shapes and the distributions of galaxy physical properties on the UVJ diagram. The majority of our lowest-mass galaxies (M-* similar to 10(10.5) M-circle dot) are consistent with formation in recent (z < 2), intense starburst events, with time-scales of less than or similar to 500 Myr. A second class of objects experience extended star-formation epochs before rapidly quenching, passing through both green-valley and post-starburst phases. The most massive galaxies in our sample are extreme systems: already old by z = 1, they formed at z similar to 5 and quenched by z = 3. However, we find evidence for their continued evolution through both AGN and rejuvenated star-formation activity.

引用

页码：417 / 439

页数：23

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The VANDELS survey: the star-formation histories of massive quiescent galaxies at 1.0 &lt; z &lt; 1.3

The VANDELS survey: the star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3