2004AJ....127.1285S

Query : 2004AJ....127.1285S

2004AJ....127.1285S - Astron. J., 127, 1285-1304 (2004/March-0)

Faint 6.7 micron galaxies and their contributions to the stellar mass density in the universe.

SATO Y., COWIE L.L., KAWARA K., MATSUHARA H., OKUDA H., SANDERS D.B., SOFUE Y., TANIGUCHI Y. and WAKAMATSU K.-I.

Abstract (from CDS):

We discuss the nature of faint 6.7 µm galaxies detected with the mid-infrared camera ISOCAM on board the Infrared Space Observatory (ISO). The 23 hr integration on the Hawaii Deep Field SSA13 has provided a sample of 65 sources down to 6 µJy at 6.7 µm. For 57 sources, optical or near-infrared counterparts were found using a statistical method. All four Chandra sources, three SCUBA sources, and one VLA/FIRST source in this field were detected at 6.7 µm with high significance. Using their optical to mid-infrared colors, we divided the 6.7 µm sample into three categories: low-redshift galaxies with past histories of rapid star formation, high-redshift ancestors of these, and other star-forming galaxies. Rapidly star-forming systems at high redshifts dominate the faintest end. Spectroscopically calibrated photometric redshifts were derived from fits to a limited set of template spectral energy distributions (SEDs). They show a high-redshift tail in their distribution with faint (<30 µJy) galaxies at z>1. The 6.7 µm galaxies tend to have brighter K magnitudes and redder I-K colors than the blue dwarf population at intermediate redshifts. Stellar masses of the 6.7 µm galaxies were estimated from their rest-frame, near-infrared luminosities. Massive galaxies (Mstar∼1011 M☉) were found in the redshift range of z=0.2-3. Epoch-dependent stellar mass functions indicate a decline of massive galaxies' comoving space densities with redshift. Even with such a decrease, the contributions of the 6.7 µm galaxies to the stellar mass density in the universe are found to be comparable to those expected from UV bright galaxies detected in deep optical surveys.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Observations - Galaxies: Evolution - Galaxies: Luminosity Function, Mass Function - Galaxies: Stellar Content - infrared: galaxies - Surveys

CDS comments: Table 1: (Nos 0-64) are '[SKC2003] NN' in SIMBAD, (Nos N0-N11) are not in SIMBAD because they are processing artifact near bright sources.

Simbad objects: 74

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Number of rows : 74
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 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
2 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
3 [SKC2003] 0 IR 13 12 15.8 +42 44 00           ~ 2 0
4 SSA 13 reg 13 12 16.5 +42 44 39           ~ 110 0
5 [SKC2003] 1 IR 13 12 16.8 +42 44 21           ~ 2 0
6 [SKC2003] 2 IR 13 12 17.4 +42 44 53           ~ 2 0
7 [SKC2003] 3 IR 13 12 18.0 +42 43 45           ~ 2 0
8 [SKC2003] 4 IR 13 12 18.1 +42 45 28           ~ 2 0
9 [SKC2003] 5 IR 13 12 18.1 +42 46 15           ~ 2 0
10 [SKC2003] 6 IR 13 12 18.4 +42 43 20           ~ 2 0
11 [SKC2003] 7 IR 13 12 18.7 +42 42 48           ~ 2 0
12 [SKC2003] 8 IR 13 12 19.5 +42 45 00           ~ 2 0
13 [SKC2003] 9 IR 13 12 19.5 +42 45 37           ~ 2 0
14 [SKC2003] 10 IR 13 12 20.0 +42 44 38           ~ 2 0
15 [SKC2003] 11 IR 13 12 21.0 +42 44 33           ~ 2 0
16 [SKC2003] 12 IR 13 12 21.3 +42 46 24           ~ 2 0
17 [SKC2003] 13 IR 13 12 21.4 +42 44 24           ~ 2 0
18 MCBA 21 QSO 13 12 21.56064 +42 44 05.7768           ~ 5 0
19 [SKC2003] 15 IR 13 12 21.6 +42 45 19           ~ 2 0
20 [SKC2003] 16 IR 13 12 21.8 +42 43 48           ~ 2 0
21 MCBA 18 X 13 12 22.48 +42 44 50.0           ~ 4 0
22 [SKC2003] 18 IR 13 12 22.8 +42 43 15           ~ 2 0
23 [SKC2003] 19 IR 13 12 23.1 +42 46 07           ~ 2 0
24 [SKC2003] 21 IR 13 12 23.4 +42 44 31           ~ 2 0
25 FIRST J131223.6+424517 IR 13 12 23.638 +42 45 17.00           ~ 2 0
26 2MASS J13122387+4245438 * 13 12 23.8919060112 +42 45 43.810203132           ~ 2 0
27 [SKC2003] 23 IR 13 12 24.3 +42 43 59           ~ 2 0
28 [SKC2003] 24 IR 13 12 24.5 +42 43 23           ~ 2 0
29 [SKC2003] 25 IR 13 12 24.7 +42 44 15           ~ 2 0
30 [SKC2003] 26 IR 13 12 24.8 +42 45 10           ~ 2 0
31 [SKC2003] 27 IR 13 12 25.2 +42 46 00           ~ 2 0
32 [SKC2003] 29 IR 13 12 25.7 +42 43 19           ~ 2 0
33 [BCS99] J131225.7+424350 PaG 13 12 25.7 +42 43 50   24.3       ~ 5 0
34 [SKC2003] 30 IR 13 12 26.2 +42 42 27           ~ 2 0
35 [SKC2003] 32 IR 13 12 26.3 +42 44 06           ~ 2 0
36 [SKC2003] 31 IR 13 12 26.3 +42 45 26           ~ 2 0
37 [SKC2003] 33 IR 13 12 27.4 +42 44 49           ~ 2 0
38 [SKC2003] 36 IR 13 12 27.7 +42 45 09           ~ 2 0
39 [SKC2003] 35 IR 13 12 27.7 +42 45 35           ~ 2 0
40 [SKC2003] 34 IR 13 12 27.7 +42 46 32           ~ 2 0
41 [SKC2003] 37 IR 13 12 27.9 +42 42 20           ~ 2 0
42 MCBA 15 X 13 12 28.25 +42 44 54.5           ~ 6 0
43 [SKC2003] 38 IR 13 12 28.3 +42 44 30           ~ 2 0
44 [SKC2003] 39 IR 13 12 28.5 +42 46 02           ~ 2 0
45 [SKC2003] 41 IR 13 12 28.6 +42 44 00           ~ 2 0
46 [SKC2003] 42 IR 13 12 28.9 +42 46 19           ~ 2 0
47 [SKC2003] 43 IR 13 12 29.0 +42 43 07           ~ 2 0
48 [SKC2003] 44 IR 13 12 29.2 +42 45 59           ~ 2 0
49 [SKC2003] 45 IR 13 12 29.4 +42 44 40           ~ 2 0
50 [SKC2003] 46 IR 13 12 29.6 +42 43 01           ~ 2 0
51 [SKC2003] 47 IR 13 12 29.9 +42 44 08           ~ 2 0
52 [SKC2003] 48 IR 13 12 29.9 +42 45 14           ~ 2 0
53 [SKC2003] 49 IR 13 12 30.0 +42 44 20           ~ 2 0
54 [SKC2003] 50 IR 13 12 30.1 +42 44 59           ~ 2 0
55 [SKC2003] 51 IR 13 12 31.1 +42 43 33           ~ 2 0
56 [SKC2003] 53 IR 13 12 31.5 +42 42 36           ~ 2 0
57 [SKC2003] 52 IR 13 12 31.5 +42 42 44           ~ 2 0
58 [SKC2003] 54 IR 13 12 31.6 +42 45 51           ~ 2 0
59 [SKC2003] 55 IR 13 12 31.8 +42 43 48           ~ 2 0
60 [SKC2003] 56 IR 13 12 32.0 +42 45 05           ~ 2 0
61 NAME SMM J131232.1+424428.0 PaG 13 12 32.1 +42 44 28           ~ 6 1
62 [SKC2003] 58 IR 13 12 32.9 +42 43 11           ~ 2 0
63 [SKC2003] 59 IR 13 12 34.0 +42 44 42           ~ 2 0
64 [SKC2003] 60 IR 13 12 34.2 +42 46 02           ~ 2 0
65 MCBA 10 G 13 12 34.48 +42 43 09.3           ~ 5 0
66 [SKC2003] 61 IR 13 12 34.5 +42 43 41           ~ 2 0
67 [SKC2003] 63 IR 13 12 35.0 +42 45 05           ~ 2 0
68 2MASS J13123587+4243583 * 13 12 35.8859919528 +42 43 58.214879904           ~ 2 0
69 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
70 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
71 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 446 1
72 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
73 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
74 NAME Hawaii Deep Field reg ~ ~           ~ 9 0

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