J/ApJ/735/L22 HUDF galaxy properties at z∼2 (Szomoru+, 2011)
Morphological evolution of galaxies from ultra-deep Hubble Space Telescope Wide
Field Camera 3 imaging: the Hubble sequence at z ∼ 2.
Szomoru D., Franx M., Bouwens R.J., van Dokkum P.G., Labbe I.,
Illingworth G.D., Trenti M.
<Astrophys. J., 735, L22 (2011)>
=2011ApJ...735L..22S 2011ApJ...735L..22S
ADC_Keywords: Galaxies, optical ; Photometry, HST ; Photometry, SDSS ;
Redshifts
Keywords: cosmology: observations - galaxies: evolution -
galaxies: formation - galaxies: high-redshift
Abstract:
We use ultra-deep Hubble Space Telescope Wide Field Camera 3/infrared
imaging of the Hubble Ultra Deep Field to investigate the rest-frame
optical morphologies of a mass-selected sample of galaxies at z∼2. We
find a large variety of galaxy morphologies, ranging from large, blue,
disk-like galaxies to compact, red, early-type galaxies. We derive
rest-frame u-g color profiles for these galaxies and show that most
z∼2 galaxies in our sample have negative color gradients such that
their cores are red.
Description:
In this Letter, we extend the previous results using the full two-year
ultra-deep near-infrared (NIR) imaging of the HUDF taken with the HST
WFC3, in 2009-2010 as part of the HUDF09 HST Treasury program (GO11563).
The full width at half-maximum of the point-spread function (PSF) is
∼0.16 arcsec. The images are combined with very deep Advanced Camera
for Surveys (ACS) images of the HUDF (Beckwith et al. 2006,
Cat. J/AJ/132/1729) to construct color images of the massive galaxies
in the field.
We use the Ks-selected catalog of Wuyts et al. (2008,
Cat. J/ApJ/682/985) to select galaxies in the HUDF for which WFC3
imaging is available. In addition to the z∼2 galaxies, we measure the
profiles of galaxies at z∼1 and z=0. The z∼1 sample is taken from the
same data set as the z∼2 sample, whereas the z=0 galaxies are taken
from the Guo et al. (2009, Cat. J/MNRAS/398/1129) SDSS catalog of
central galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 62 127 Galaxy properties at z∼0, z∼1 and z∼2
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
J/ApJ/703/2033 : Lyman-break galaxies (LBG) in the HUDF (Rafelski+, 2009)
J/MNRAS/398/1129 : Central galaxies in groups and clusters (Guo+, 2009)
J/ApJ/682/985 : FIREWORKS photometry of GOODS CDF-S (Wuyts+, 2008)
J/ApJ/668/839 : Spectrophotometric redshifts for HUDF galaxies (Ryan+, 2007)
J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)
http://sdss.physics.nyu.edu/vagc : NYU Value-Added Galaxy Catalog home page
http://www.mpa-garching.mpg.de/SDSS/ : Physical properties for galaxies in the
SDSS studies at MPA/JHU
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Source Source (HUDF09 or SDSS)
8- 14 I7 --- ID Source identification (1)
16- 20 F5.2 mag mag Total apparent AB magnitude (2)
22 A1 --- l_reff Limit flag on reff
24- 29 F6.2 kpc reff Circularized effective radius
31 A1 --- l_n Limit flag on n
33- 37 F5.2 --- n Sersic index
39- 43 F5.2 [Msun] logM Log of the stellar mass
45- 49 F5.2 mag u-g Rest-frame (u-g) color index
51- 55 F5.2 [Msun/kpc2] logSD Log of average surface density
57- 61 F5.3 --- z Redshift (spectroscopic unless f_z=*)
62 A1 --- f_z [*] Denotes z is a photometric redshift
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Note (1): NYU-VAGC ID (SDSS, Guo et al., 2009, Cat. J/MNRAS/398/1129,
<[GMM2009b] NYU-VAGC NNNNNNN> in Simbad) or
FIREWORKS ID (HUDF09, Wuyts et al., 2008, Cat. J/ApJ/682/985;
<[WLF2008b] NNNN> in Simbad).
Note (2): in g band (SDSS, Cat. J/MNRAS/398/1129) or H band (HUDF09,
Cat. J/ApJ/682/985).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 05-Dec-2012