2004A&A...427L..17P


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.01CET09:52:37

2004A&A...427L..17P - Astronomy and Astrophysics, volume 427, L17-20 (2004/12-1)

Truncation of stellar disks in galaxies at z ≃ 1.

PEREZ I.

Abstract (from CDS):

We report here the first evidence for stellar disk truncation at high redshift, based on surface photometry of a sample of 16 high redshift (0.6<z<1.0) disk galaxies from the GOODS HST/ACS data. The radial profiles are best fit by a double exponential profile. This result agrees with the profile of disks in local galaxies. The cosmological surface brightness dimming at this redshift range only allows us to detect galaxies with spatially ``early'' truncation, Rbr/hin≃3.5. Six galaxies show the radial double exponential structure, with an average value of Rbr/hin≃1.8. Such ``early'' truncated galaxies are missing in local samples so far. This result opens the ground for observing directly disk evolution through the study of the truncation radius as a function of redshift.

Abstract Copyright:

Journal keyword(s): galaxies: spiral - galaxies: evolution - galaxies: high-redshift - galaxies: structure

Nomenclature: Fig.1, Table 1: [P2004b] JHHMMSS+DDMMSS N=6.

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1107 1
2 COMBO J0332333-274410 G 03 32 33.342 -27 44 10.10   25.7382   24.570 24.6161 ~ 6 0
3 COMBO J0332515-275044 G 03 32 51.58099 -27 50 44.6694   23.983   24.957 23.0368 ~ 17 0
4 [P2004b] J123610+621334 G 12 36 10 +62 13.6           ~ 1 0
5 GOODS J123637.02+621159.9 G 12 36 37.0196 +62 11 59.901 23.21 23.0373 24.03 21.56 21.5688 ~ 14 0
6 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 952 1
7 GOODS J123707.74+621253.6 G 12 37 07.8090 +62 12 53.808 25.8 25.4015 25.03 24.37 24.4182 ~ 7 0
8 GOODS J123709.25+622006.8 G 12 37 09.2470 +62 20 06.841 24.35 23.9018 24.16 23.5 22.9209 ~ 11 0

    Equat.    Gal    SGal    Ecl

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2021.03.01-09:52:37

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