2015ApJ...808L..29S

Query : 2015ApJ...808L..29S

2015ApJ...808L..29S - Astrophys. J., 808, L29 (2015/July-3)

The sizes of massive quiescent and star-forming galaxies at z ∼ 4 with ZFOURGE and CANDELS.

STRAATMAN C.M.S., LABBE I., SPITLER L.R., GLAZEBROOK K., TOMCZAK A., ALLEN R., BRAMMER G.B., COWLEY M., VAN DOKKUM P., KACPRZAK G.G., KAWINWANICHAKIJ L., MEHRTENS N., NANAYAKKARA T., PAPOVICH C., PERSSON S.E., QUADRI R.F., REES G., TILVI V., TRAN K.-V.H. and WHITAKER K.E.

Abstract (from CDS):

We study the rest-frame ultraviolet (UV) sizes of massive () galaxies at, selected from the FourStar Galaxy Evolution Survey, by fitting single Sérsic profiles to Hubble Space Telescope/WFC3/F160W images from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey. Massive quiescent galaxies are very compact, with a median circularized half-light radius kpc. Removing (31%) sources with signs of active galactic nucleus activity does not change the result. Star-forming galaxies have kpc, larger than quiescent galaxies. Quiescent galaxies at are on average smaller than at and smaller than at. Star-forming galaxies of the same stellar mass are smaller than at. Overall, the size evolution at is well described by a power law, with kpc for quiescent galaxies and kpc for star-forming galaxies. Compact star-forming galaxies are rare in our sample: we find only (7%) with, whereas (81%) of the quiescent galaxies are compact. The number density of compact quiescent galaxies at is and increases rapidly, by, between. The paucity of compact star-forming galaxies at and their large rest-frame UV median sizes suggest that the formation phase of compact cores is very short and/or highly dust obscured.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: evolution - galaxies: formation - galaxies: high-redshift - infrared: galaxies

Nomenclature: Table 1: [SLS2014] ZF-CDFS-NNNN N=3 added (Nos 261,400,509), [SLS2014] ZF-COSMOS-NNNNN N=2 added (Nos 3784 and 12141), [SLS2014] ZF-UDS-NNNNN N=9 added (Nos 4432-11279).

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CANDELS UDS F160W J021707.33-051301.7 G 02 17 07.3297 -05 13 01.713       27.847   ~ 7 0
2 CANDELS UDS F160W J021709.47-051611.2 G 02 17 09.4684 -05 16 11.291     27.576 26.677   ~ 9 0
3 CANDELS UDS F160W J021709.70-051543.4 G 02 17 09.7028 -05 15 43.447     27.965 27.006   ~ 10 0
4 CANDELS UDS F160W J021710.49-051337.0 G 02 17 10.5011 -05 13 37.012     26.999 27.333   ~ 13 0
5 CANDELS UDS F160W J021717.40-051016.9 EmG 02 17 17.4097 -05 10 16.917   27.611 26.395 25.159   ~ 7 0
6 CANDELS UDS F160W J021721.16-050958.2 G 02 17 21.1661 -05 09 58.233           ~ 7 0
7 CANDELS UDS F160W J021721.78-051326.4 G 02 17 21.7905 -05 13 26.525       27.914   ~ 5 0
8 CANDELS UDS F160W J021721.80-051424.9 G 02 17 21.8088 -05 14 25.027   27.895 26.414 25.405   ~ 4 0
9 AS2UDS 0308.0 G 02 17 21.8234 -05 14 25.876     23.0863 26.09378   ~ 8 0
10 CANDELS UDS F160W J021725.06-051046.9 G 02 17 25.0534 -05 10 46.959     27.162 26.027   ~ 4 0
11 CANDELS UDS F160W J021725.96-051427.3 AG? 02 17 25.9662 -05 14 27.281   27.7074 26.8483 26.9699   ~ 7 0
12 CANDELS UDS F160W J021727.61-050855.8 G 02 17 27.6178 -05 08 55.802   28.334   28.069   ~ 11 0
13 CANDELS UDS F160W J021732.23-050825.0 G 02 17 32.2366 -05 08 25.072           ~ 3 0
14 CANDELS UDS F160W J021735.91-050810.8 G 02 17 35.9097 -05 08 10.868           ~ 12 0
15 AS2UDS J021738.51-051055.55 AG? 02 17 38.4961 -05 10 55.637     23.5516 27.943   ~ 8 0
16 CANDELS UDS F160W J021738.53-051057.0 G 02 17 38.5309 -05 10 56.987           ~ 4 0
17 CXOCDFS J033202.6-274430 AGN 03 32 02.57 -27 44 30.0   27.98 26.97   26.684 ~ 35 0
18 CXOCDFS J033218.9-275136 Sy2 03 32 18.8321 -27 51 35.476   25.15   24.51 25.128 ~ 83 0
19 [SLS2014] ZF-CDFS-261 G 03 32 19.8367 -27 51 59.396           ~ 1 0
20 BBG 4550 AGN 03 32 24.624 -27 51 37.82   28.774 27.35   26.004 ~ 22 0
21 VUDS 530030313 G 03 32 27.1884 -27 52 11.584     26.04     ~ 9 0
22 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
23 ZFOURGE CDFS 8959 G 03 32 28.0279 -27 51 21.665           ~ 5 0
24 [VV2006] J033229.9-275106 Sy2 03 32 29.8487 -27 51 05.879   27.5675 25.05 23.970 24.5370 ~ 101 0
25 [GFG2013b] 18180 G 03 32 43.5077 -27 45 23.099           ~ 7 0
26 JADES-GS NC 214075 EmG 03 32 47.2659 -27 45 37.553           ~ 8 0
27 ZFOURGE COSMOS 20115 G 10 00 14.76 +02 22 43.3 27.82 27.57 27.10 26.17 25.55 ~ 36 0
28 ZFOURGE COSMOS 19589 G 10 00 16.0107 +02 22 56.512           ~ 11 0
29 ZFOURGE COSMOS 17473 G 10 00 19.5666 +02 21 49.306           ~ 4 0
30 CANDELS COSMOS F160W J100027.00+022235.5 G 10 00 27.0154 +02 22 35.496           ~ 9 0
31 COSMOS 1611999 G 10 00 43.62 +02 14 20.5 27.38 26.887 25.618 24.97 24.60 ~ 8 0

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