2000A&A...364..517R


Query : 2000A&A...364..517R

2000A&A...364..517R - Astronomy and Astrophysics, volume 364, 517-531 (2000/12-2)

Spiral and irregular galaxies in the Hubble Deep Field North. Comparison with early types and implications for the global SFR density.

RODIGHIERO G., GRANATO G.L., FRANCESCHINI A., FASANO G. and SILVA L.

Abstract (from CDS):

We analyze a morphologically-selected complete sample of 52 late-type (spiral and irregular) galaxies in the Hubble Deep Field North with total K-magnitudes brighter than K=20.47 and typical redshifts z∼0.5 to 1.4. This sample exploits in particular the ultimate imaging quality achieved by HST in this field, allowing us to clearly disentangle the early- from late-type galaxy morphologies, based on accurate profiles of the surface brightness distributions. Our purpose was to investigate systematic differences between the two classes, as for colours, redshift distributions and ages of the dominant stellar populations. Our analysis makes also use of an exhaustive set of modellistic spectra accounting for a variety of physical and geometrical situations for the stellar populations, the dusty Interstellar Medium (ISM), and relative assemblies. The high photometric quality and wide spectral coverage allow to estimate accurate photometric redshifts for 16 objects lacking a spectroscopic measurement, and allow a careful evaluation of all systematics of the selection [e.g. that due to the surface-brightness limit]. This sample appears to miss significantly galaxies above z=1.4 (in a similar way as an early-type galaxy sample previously studied by us), a fact which may be explained as a global decline of the underlying mass function for galaxies at these high redshifts. Differences between early- and late-types are apparent - particularly in the colour distributions and the evolutionary star-formation (SF) rates per unit volume -, although the complication in spectro-photometric modelling introduced by dust-extinction in the gas-rich systems prevents us to reach conclusive results on the single sources (only future long-wavelength IR observations will allow to break the age/extinction degeneracy). However, we find that an integrated quantity like the comoving star-formation rate density as a function of redshift Ψ(z) is much less affected by these uncertainties: by combining this with the previously studied early-type galaxy sample, we find a shallower dependence of Ψ(z) on z between z=0.2 and z=1.5 than found by Lilly et al. (1995ApJ...455..108L). Our present results, based on a careful modelling of the UV-optical-NIR SED of a complete galaxy sample - exploiting the observed time-dependent baryonic mass function in stars as a constraint and attempting a first-order correction for dust extinction - support a revision of the Lilly-Madau plot at low-redshifts for both UV- and K-band selected samples, as suggested by independent authors (Cowie et al., 1999AJ....118..603C).

Abstract Copyright:

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: ISM - galaxies: irregular - galaxies: photometry - galaxies: spiral - infrared: galaxies

VizieR on-line data: <Available at CDS (J/A+A/364/517): table1>

Nomenclature: Table 1: [RGF2000] NN (Nos 0-51).

Simbad objects: 53

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Number of rows : 53
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 GOODS J123638.42+621231.6 G 12 36 38.4220 +62 12 31.647   25.3894 24.80 22.87 22.6994 ~ 22 0
2 TKRS 6595 G 12 36 38.9796 +62 12 20.080 24.65 23.6890 23.73 22.14 22.2439 ~ 27 0
3 [VAE96] 4-655 G 12 36 39.5707 +62 12 13.813 27.7 26.6 25.82     ~ 10 0
4 [WBD96] 4-948.12 G 12 36 41.3298 +62 11 41.178 25.28 22.4893 24.51 21.91 22.8628 ~ 19 0
5 [T2003] 108 G 12 36 41.4283 +62 11 42.804   23.8244   23.51 22.9309 ~ 19 0
6 [TSW99] 26.110 G 12 36 41.953 +62 12 05.73 23.89 22.7094 22.508 20.82 21.0740 ~ 38 0
7 [WBD96] 1-57.0 G 12 36 42.7057 +62 13 07.075 24.76 23.8810 24.00 22.02 21.9425 ~ 24 0
8 Cowie 11 G 12 36 42.97 +62 12 16.5 23.55 22.2808 22.298 20.51 20.7608 ~ 46 0
9 Cowie 20 G 12 36 43.1967 +62 11 48.301 25.41 25.0878 24.69 23.10 22.6274 ~ 37 0
10 CXOHDFN J123644.0+621250 EmG 12 36 43.98 +62 12 50.0 23.18 22.6029 22.821 20.84 21.0192 ~ 61 0
11 [TSB2006] 13 EmG 12 36 44.20 +62 12 48.0 23.53 22.6360 22.862 21.40 21.6790 ~ 35 0
12 Cowie 100 G 12 36 44.4562 +62 11 41.889 23.76 23.4996 25.24 24.30 23.1965 ~ 26 0
13 [WBD96] 1-34.0 IG 12 36 44.6018 +62 13 04.904 24.27 23.4807   21.14 21.2361 ~ 24 0
14 Cowie 83 G 12 36 44.6475 +62 12 27.773 24.24 24.4064 24.49 23.66 23.7284 ~ 40 0
15 [WBD96] 2-9.0 EmG 12 36 45.8629 +62 13 26.145 22.74 22.4240 23.006 20.71 20.8987 ~ 28 0
16 [TSW99] 198.000 EmG 12 36 46.27 +62 11 42.0 22.87 22.8013 23.94 21.52 21.4006 ~ 47 0
17 [RGF2000] 15 PoG 12 36 47.04 +62 12 35.0           ~ 2 0
18 Cowie 60 G 12 36 47.1716 +62 14 14.592 25.23 25.9205 25.09 23.92 23.6114 ~ 26 0
19 Cowie 72 G 12 36 47.7919 +62 12 33.291 24.64 24.7705 24.75 23.80 23.4168 ~ 26 0
20 [TSB2006] 55 G 12 36 48.189 +62 12 14.98   23.8 23.4   21.9 ~ 10 0
21 [WBD96] 2-139.0 G 12 36 48.2604 +62 13 14.164 27.39 26.1226 26.0   24.4240 ~ 16 0
22 [T2003] 761 G 12 36 48.33 +62 14 16.5 24.76 24.0079 24.09 23.58 23.5166 ~ 44 1
23 [CBH2004] 189.202545+62.22461 G 12 36 48.6112 +62 13 28.595 24.00 24.1104 24.87 23.14 22.8454 ~ 26 0
24 GOODS J123648.64+621216.1 rG 12 36 48.65 +62 12 15.8 25.46 26.3837 25.8   24.7381 ~ 21 0
25 TKRS 6706 G 12 36 48.7818 +62 13 18.880 23.85 24.0507 24.72 22.87 22.8194 ~ 31 0
26 Cowie 47 EmG 12 36 49.0640 +62 12 21.573 24.32 23.5144 23.93 22.59 22.4691 ~ 33 0
27 ISOHDF J123649.3+621148 G 12 36 49.2534 +62 11 48.817 24.65 24.8890 24.79 23.26 22.9909 ~ 32 0
28 MODS deep 2163 IG 12 36 49.4402 +62 13 16.985 24.62 24.5509 24.85 23.63 23.3833 ~ 24 0
29 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1873 1
30 Cowie 22 G 12 36 49.51 +62 14 06.9 24.66 23.6237 23.50 21.95 21.8989 ~ 51 0
31 [SWM2014] GOODS-N 12780 G 12 36 49.5281 +62 12 20.446 24.88 25.2815 25.43   24.4897 ~ 16 0
32 [WBD96] 2-585.2 G 12 36 49.5666 +62 14 15.111 25.8 25.3941 25.74   24.1746 ~ 15 0
33 NAME SMM J123650+621316 EmG 12 36 49.74 +62 13 13.0 25.47 23.7701 23.48 21.46 21.6273 ~ 87 1
34 [T2003] 1020 EmG 12 36 50.21 +62 12 39.9 23.49 22.1763 22.380 20.43 20.7575 ~ 42 0
35 Cowie 35 G 12 36 50.48 +62 13 16.0 25.12 24.7864 25.19 23.07 22.8745 ~ 35 0
36 GOODS J123651.05+621321.1 EmG 12 36 51.0545 +62 13 21.062 23.45 20.7904 21.887 19.38 19.6439 ~ 31 0
37 [WDS2014] ID.Z18 EmG 12 36 51.7183 +62 12 20.542 24.90 23.6504 22.917 21.45 21.6164 ~ 27 0
38 Cowie 10 G 12 36 51.80 +62 13 53.7 24.63 23.1740 22.974 21.08 21.2076 ~ 47 0
39 HNM 313 G 12 36 51.984 +62 14 00.82           ~ 11 0
40 NAME SMM J123652+621354 G 12 36 52.79 +62 13 54.3   22.4 22.3   21.4 ~ 26 0
41 [EAD2001] HDFN J123652.88+621404.8 IG 12 36 52.84 +62 14 04.8 25.2 25.1 24.6 23.45 23.3 ~ 19 0
42 TKRS 7845 G 12 36 53.4460 +62 12 34.644 25.34 24.3291 24.15 22.78 22.8465 ~ 28 0
43 Cowie 7 G 12 36 53.8929 +62 12 54.395 24.53 22.9664 22.995 20.95 20.9765 ~ 41 0
44 Cowie 46 G 12 36 54.0894 +62 13 54.725 24.87 23.9806 24.14 22.72 22.5140 ~ 37 0
45 [FLY99] 899 PoG 12 36 55.505 +62 14 02.69           ~ 9 0
46 Cowie 57 G 12 36 55.5113 +62 13 53.766 23.33 23.4712 24.50 22.85 22.7486 ~ 33 0
47 SDSS J123655.55+621246.1 G 12 36 55.5652 +62 12 45.865 23.59 23.7372 23.94 23.08 22.0271 ~ 38 0
48 [CBH2004] 189.233841+62.22501 G 12 36 56.1205 +62 13 30.052 24.10 24.1939   23.80 23.5796 ~ 23 0
49 SHARDS 20003119 G 12 36 56.64 +62 12 45.6 24.73 22.9417 22.968 20.06 20.1565 ~ 42 0
50 [TSB2006] 119 EmG 12 36 57.2136 +62 12 26.190 25.06 23.6276 24.01 22.36 22.4474 ~ 31 0
51 Cowie 33 EmG 12 36 57.3034 +62 12 59.983 22.56 22.5370 23.062 21.07 21.3978 ~ 35 0
52 [CBH2004] 189.240524+62.22099 G 12 36 57.7256 +62 13 15.572 25.34 23.9676 24.64 22.94 22.8476 ~ 28 1
53 [TSB2006] 133 EmG 12 36 58.7494 +62 12 52.759 22.92 22.6802 23.231 20.99 21.3497 ~ 32 0

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2022.05.20-19:45:34

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