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The dominant role of mergers in the size evolution of massive early-type galaxies since z ~ 1

Abstract:

In this paper we measure the merger fraction and rate, both minor and major, of massive early-type galaxies (M_star >= 10^11 M_Sun) in the COSMOS field, and study their role in mass and size evolution. We use the 30-band photometric catalogue in COSMOS, complemented with the spectroscopy of the zCOSMOS survey, to define close pairs with a separation 10h^-1 kpc <= r_p <= 30h-1 kpc and a relative velocity Delta v <= 500 km s^-1. We measure both major (stellar mass ratio mu = M_star,...

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Publisher copy:
10.1051/0004-6361/201219085

Authors


Journal:
A More from this journal
Volume:
548
Pages:
A7
Publication date:
2012-02-21
DOI:
EISSN:
1432-0746
ISSN:
0004-6361
Language:
English
Keywords:
Pubs id:
pubs:449069
UUID:
uuid:0acf84fd-bf4a-4a0e-ab42-310bb9ee570f
Local pid:
pubs:449069
Source identifiers:
449069
Deposit date:
2014-02-20

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