Understanding the size growth of massive galaxies through stellar populations

被引：1
作者：
Ferreras, I. [1 ]
Trujillo, I. [2 ,3 ]
Marmol-Queralto, E. [4 ]
Perez-Gonzalez, P. [5 ]
机构：
[1] UCL, Mullard Space Sci Lab, London, England
[2] Inst Astrofis Canarias, San Cristobal la Laguna, Spain
[3] Univ La Laguna, San Cristobal la Laguna, Spain
[4] Royal Observ, Inst Astron, Edinburgh, Midlothian, Scotland
[5] Univ Complutense Madrid, Dept Astrofis, Madrid, Spain
来源：
GALAXIES AT HIGH REDSHIFT AND THEIR EVOLUTION OVER COSMIC TIME | 2016年 / 11卷 / S319期
关键词：
galaxies: evolution; galaxies: formation; ELLIPTIC GALAXIES; EVOLUTION;
D O I：
10.1017/S174392131501087X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Massive early-type galaxies undergo a significant process of evolution with redshift on the stellar mass vs size plane. Furthermore, this trend does not depend on the age of their stellar populations. Therefore, such an evolution should involve processes that do not include a significant amount of star formation, leaving (mostly) dry mergers as the main growth channel. By studying close pairs involving a massive galaxy, one can quantify the role of mergers on the growth of massive galaxies. A recent study based on the SHARDS dataset reveals that minor mergers cannot be the dominant mechanism to explain the bulk of size growth in these systems. Merging is found to provide a constant fractional growth rate of similar to 10% per Gyr from redshift z=1, corresponding to an overall stellar mass increase of 2x between z=1 and z=0.
引用
收藏
页码：114 / 117
页数：4
相关论文
共 19 条
[1]   Stellar population synthesis at the resolution of 2003 [J].
Bruzual, G ;
Charlot, S .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 344 (04) :1000-1028
[2]   Passively evolving early-type galaxies at 1.4 ≲ z ≲ 2.5 in the Hubble Ultra Deep Field [J].
Daddi, E ;
Renzini, A ;
Pirzkal, N ;
Cimatti, A ;
Malhotra, S ;
Stiavelli, M ;
Xu, C ;
Pasquali, A ;
Rhoads, JE ;
Brusa, M ;
Alighieri, SD ;
Ferguson, HC ;
Koekemoer, AM ;
Moustakas, LA ;
Panagia, N ;
Windhorst, RA .
ASTROPHYSICAL JOURNAL, 2005, 626 (02) :680-697
[3]   The link between the star formation history and [α/Fe] [J].
de la Rosa, Ignacio G. ;
La Barbera, Francesco ;
Ferreras, Ignacio ;
de Carvalho, Reinaldo R. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 418 (01) :L74-L78
[4]   THE DRAMATIC SIZE EVOLUTION OF ELLIPTICAL GALAXIES AND THE QUASAR FEEDBACK [J].
Fan, L. ;
Lapi, A. ;
De Zotti, G. ;
Danese, L. .
ASTROPHYSICAL JOURNAL LETTERS, 2008, 689 (02) :L101-L104
[5]   Constraints on the merging channel of massive galaxies since z ∼ 1 [J].
Ferreras, I. ;
Trujillo, I. ;
Marmol-Queralto, E. ;
Perez-Gonzalez, P. G. ;
Cava, A. ;
Barro, G. ;
Cenarro, J. ;
Hernan-Caballero, A. ;
Cardiel, N. ;
Rodriguez-Zaurin, J. ;
Cebrian, M. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 444 (01) :906-918
[6]   EARLY-TYPE GALAXIES IN THE PEARS SURVEY: PROBING THE STELLAR POPULATIONS AT MODERATE REDSHIFT [J].
Ferreras, Ignacio ;
Pasquali, Anna ;
Malhotra, Sangeeta ;
Rhoads, James ;
Cohen, Seth ;
Windhorst, Rogier ;
Pirzkal, Nor ;
Grogin, Norman ;
Koekemoer, Anton M. ;
Lisker, Thorsten ;
Panagia, Nino ;
Daddi, Emanuele ;
Hathi, Nimish P. .
ASTROPHYSICAL JOURNAL, 2009, 706 (01) :158-169
[7]   A SCALING RELATION BETWEEN MERGER RATE OF GALAXIES AND THEIR CLOSE PAIR COUNT [J].
Jiang, C. Y. ;
Jing, Y. P. ;
Han, Jiaxin .
ASTROPHYSICAL JOURNAL, 2014, 790 (01)
[8]   Dry mergers: a crucial test for galaxy formation [J].
Khochfar, S. ;
Silk, J. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2009, 397 (01) :506-510
[9]   SPIDER - VII. Revealing the stellar population content of massive early-type galaxies out to 8Re [J].
La Barbera, F. ;
Ferreras, I. ;
de Carvalho, R. R. ;
Bruzual, G. ;
Charlot, S. ;
Pasquali, A. ;
Merlin, E. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 426 (03) :2300-2317
[10]   Characterizing the satellites of massive galaxies up to z ∼ 2: young populations to build the outskirts of nearby massive galaxies [J].
Marmol-Queralto, E. ;
Trujillo, I. ;
Villar, V. ;
Barro, G. ;
Perez-Gonzalez, P. G. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 429 (01) :792-798
12