2008ApJ...673..686H

Query : 2008ApJ...673..686H

2008ApJ...673..686H - Astrophys. J., 673, 686-693 (2008/February-1)

Starburst intensity limit of galaxies at z≃5-6.

HATHI N.P., MALHOTRA S. and RHOADS J.E.

Abstract (from CDS):

The peak star formation intensity in starburst galaxies does not vary significantly from the local universe to redshift z∼6. We arrive at this conclusion through new surface brightness measurements of 47 starburst galaxies at z≃5-6, doubling the redshift range for such observations. These galaxies are spectroscopically confirmed in the Hubble Ultra Deep Field (HUDF) through the GRism ACS program for Extragalactic Science (GRAPES) project. The starburst intensity limit for galaxies at z≃5-6 agrees with those at z≃3-4 and z≃0 to within a factor of a few, after correcting for cosmological surface brightness dimming and for dust. The most natural interpretation of this constancy over cosmic time is that the same physical mechanisms limit starburst intensity at all redshifts up to z≃6 (be they galactic winds, gravitational instability, or something else). We do see two trends with redshift: First, the UV spectral slope (β) of galaxies at z≃5-6 is bluer than that of z≃3 galaxies, suggesting an increase in dust content over time. Second, the galaxy sizes from z≃3 to 6 scale approximately as the Hubble parameter/H(z). Thus, galaxies at z≃6 are high-redshift starbursts, much like their local analogs except for slightly bluer colors, smaller physical sizes, and correspondingly lower overall luminosities. If we now assume a constant maximum star formation intensity, the differences in observed surface brightness between z≃0 and 6 are consistent with standard expanding cosmology and strongly inconsistent with the tired light model.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: High-Redshift - Galaxies: Starburst

CDS comments: In table 1, object -101 is GOODS J033242.50-274551.7, object -102 is GOODS J033234.35-274855.8.

Simbad objects: 51

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Number of rows : 51
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 JADES-GS NC 122654 EmG 03 32 30.568 -27 47 06.60     28.35     ~ 14 0
2 UDF 3250 G 03 32 31.83 -27 47 56.1     30.71     ~ 6 0
3 JADES-GS+053.13600-27.79849 EmG 03 32 32.618 -27 47 54.09   31.51 31.20     ~ 22 1
4 UDF 3377 G 03 32 32.630 -27 47 54.23   32.41 32.99     ~ 5 1
5 MUSE-WIDE 609803729 EmG 03 32 33.046 -27 46 52.56   35.4225 28.8200     ~ 14 0
6 GLARE 1054 EmG 03 32 33.207 -27 46 43.28     31.91     ~ 14 0
7 MUSE-WIDE 613234218 EmG 03 32 33.427 -27 47 44.88   31.25 31.33     ~ 16 0
8 JADES-GS NC 110739 EmG 03 32 33.780 -27 48 07.59     33.24     ~ 17 0
9 GOODS-MUSIC 10778 EmG 03 32 34.094 -27 46 47.21     30.55     ~ 20 0
10 UDF 3450 G 03 32 34.283 -27 47 52.27   32.37 32.32     ~ 13 0
11 UDF 3503 G 03 32 34.306 -27 47 53.56     30.95     ~ 13 0
12 GOODS J033234.36-274855.8 EmG 03 32 34.35312 -27 48 55.7496   24.392   27.08 24.2793 ~ 23 0
13 [BIB2006] CDFS-2345447559 G 03 32 34.53186 -27 47 55.9598     31.84     ~ 13 1
14 GOODS J033234.55-274756.0 G 03 32 34.546 -27 47 55.98   29.878 29.162   27.9995 ~ 10 1
15 MUSE-WIDE 611463971 EmG 03 32 34.956 -27 47 17.59   30.0520 29.87     ~ 13 0
16 [RTG2015] 3910 G 03 32 34.975 -27 47 48.04   31.87 31.49     ~ 8 0
17 JADES-GS NC 203787 EmG 03 32 35.056 -27 47 40.19     30.59   27.83 ~ 17 0
18 MUSE-WIDE 609663712 EmG 03 32 35.100 -27 48 02.92     29.55     ~ 11 0
19 JADES-GS+053.14667-27.78621 EmG 03 32 35.197 -27 47 10.07     31.08     ~ 20 0
20 JADES-GS+053.15105-27.78294 EmG 03 32 36.249 -27 46 58.32   30.3142 29.48     ~ 18 0
21 GOODS-MUSIC 10898 EmG 03 32 36.470 -27 46 41.44   29.56 31.02   26.54 ~ 25 0
22 GOODS J033236.83-274558.0 EmG 03 32 36.826 -27 45 58.03 27.7861 27.1207 25.178   24.6472 ~ 31 0
23 [BIO2015] GSDZ-2372848546 G 03 32 37.277 -27 48 54.58   33.20 31.18     ~ 14 0
24 JADES-GS+053.15638-27.80966 EmG 03 32 37.525 -27 48 34.52   30.161 30.86     ~ 11 0
25 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
26 JADES-GS+053.16268-27.80237 EmG 03 32 39.039 -27 48 08.28     28.61     ~ 18 0
27 [BIB2006] HUDF-39059083 G 03 32 39.049 -27 49 08.28     32.82     ~ 8 0
28 GOODS J033239.06-274538.7 EmG 03 32 39.066 -27 45 38.75   30.7705 38.76     ~ 29 0
29 ACS-GC 90045073 Sy2 03 32 39.670 -27 48 50.60   27.3148   25.18 24.512 ~ 108 0
30 JADES-GS+053.16604-27.82394 EmG 03 32 39.842 -27 49 25.96   29.1033 28.954     ~ 11 0
31 GLARE 1004 AGN 03 32 39.864 -27 46 19.08   29.9603 32.55     ~ 26 0
32 CXOCDFS J033240.0-274815 EmG 03 32 40.013 -27 48 14.99     29.013   26.7186 ~ 55 0
33 GOODS J033240.12-274535.5 G 03 32 40.119 -27 45 35.49   30.8392 27.4172   25.5810 ~ 22 0
34 UDF 8301 G 03 32 40.121 -27 46 28.30   30.26 29.50     ~ 11 0
35 JADES-GS NC 136531 EmG 03 32 40.248 -27 46 05.20           ~ 11 0
36 JADES-GS+053.16900-27.80079 EmG 03 32 40.555 -27 48 02.59     32.72     ~ 14 0
37 HRG14 J033240.86-274546.3 EmG 03 32 40.85 -27 45 46.3     28.2061     ~ 15 1
38 GLARE 1030 G 03 32 41.185 -27 49 14.84     31.83     ~ 18 0
39 UDF 4173 G 03 32 41.309 -27 47 42.32     29.64     ~ 14 0
40 MUSE-WIDE 608103476 EmG 03 32 41.345 -27 48 43.11     27.9329     ~ 16 0
41 JADES-GS NC 198564 EmG 03 32 41.414 -27 48 49.36   28.5129 28.3873     ~ 10 0
42 GOODS J033242.50-274551.7 EmG 03 32 42.50539 -27 45 51.6384   25.037   25.69 24.2200 ~ 18 0
43 GLARE 1045 EmG 03 32 42.595 -27 48 08.82           ~ 14 0
44 MUSE-WIDE 609383678 EmG 03 32 43.158 -27 48 03.16   36.61 28.3825     ~ 14 0
45 JADES-GS+053.18335-27.79602 EmG 03 32 44.000 -27 47 45.44   31.16 30.06     ~ 9 0
46 JADES-GS NC 109857 EmG 03 32 45.248 -27 48 12.47   30.3524 28.6074     ~ 13 0
47 [RTG2015] 8279 EmG 03 32 45.317 -27 46 37.59   28.8990 27.7618     ~ 8 0
48 UDF 8664 G 03 32 45.376 -27 46 37.22   33.2463 28.6535     ~ 8 0
49 MUSE-WIDE 608803604 EmG 03 32 45.602 -27 46 44.60   31.2490 28.4112     ~ 13 0
50 [YDS2005] J033245.80-274725.30 G 03 32 45.805 -27 47 25.31     29.62     ~ 6 0
51 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1

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