J/AJ/122/611 Caltech Faint Galaxy Redshift Survey. XV. (van den Bergh+, 2001)
Caltech Faint Galaxy Redshift Survey. XV.
Classifications of galaxies with 0.2<Z<1.1 in the Hubble Deep Field North and
its flanking fields.
van den Bergh S., Cohen J.G., Crabbe C.
<Astron. J. 122, 611 (2001)>
=2001AJ....122..611V 2001AJ....122..611V
ADC_Keywords: Galaxy catalogs ; Redshifts ; Magnitudes ; Morphology
Keywords: galaxies: evolution - galaxies: formation - surveys
Abstract:
To circumvent the spatial effects of resolution on galaxy
classification, the images of 233 objects of known redshift in the
Hubble Deep Field (HDF) and its flanking fields that have redshifts in
the range 0.20<z<1.10 were degraded to the resolution that they would
have had if they were all located at a redshift of z=1.00. As in Paper
XIV (Cat. J/AJ/120/2190) of the present series, the effects of
shifts in rest wavelength were mitigated by using R-band images for
the classification of galaxies with 0.2<z<0.6 and I-band images for
objects with redshifts 0.6<z<1.1. A special effort was made to search
for bars in distant galaxies. The present data strongly confirm the
previous conclusion that the Hubble tuning fork diagram only provides
a satisfactory framework for the classification of galaxies with
z<0.3. More distant disk galaxies are often difficult to shoehorn into
the Hubble classification scheme. The paucity of barred spirals and
grand-design spirals at large redshifts is confirmed. It is concluded
that the morphology of disk galaxies observed at look-back times
smaller than 3-4Gyr differs systematically from that of more distant
galaxies viewed at look-back times of 4-8Gyr. The disks of late-type
spirals at z>0.5 are seen to be more chaotic than those of their
nearer counterparts. Furthermore, the spiral structure in distant
early-type spirals appears to be less well developed than it is in
nearby early galaxies.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 100 227 Classifications of Galaxies
--------------------------------------------------------------------------------
See also:
J/ApJS/127/1 : UGRK Photometry in the Hubble Deep field region (Hogg+, 2000)
J/ApJ/538/29 : Caltech Faint Galaxy Redshift Survey. X (Cohen+, 2000)
J/AJ/121/2895 : Caltech Faint Galaxy Redshift Survey. XIII (Cohen 2001)
J/AJ/120/2190 : Caltech Faint Galaxy Redshift Survey. XIV (van den Bergh+ 2000)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- [CHB2000] Galaxy identification (1)
13- 17 F5.3 --- z Redshift from Cohen et al.
(2000, Cat. J/ApJ/538/29) or
Cohen (2001, Cat. J/AJ/121/2895)
19- 23 F5.2 mag Rmag The R band magnitude from Hogg et al.
(2000, Cat. J/ApJS/127/1)
25- 36 A12 --- MType Galaxy morphological classification
38-100 A63 --- Com Comments
--------------------------------------------------------------------------------
Note (1): Names are Hmmsss_MMSS for objects in the HDF, where the object's
J2000 coordinates are 12 mm ss.s +62 MM SS. The initial letter is
``F'' for objects in the flanking fields.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Cohen et al., Paper VII 1999ApJS..120..171C 1999ApJS..120..171C
Cohen et al., Paper VIII 1999ApJ...512...30C 1999ApJ...512...30C
Hogg et al., Paper IX 2000ApJS..127....1H 2000ApJS..127....1H, Cat. J/ApJS/127/1
Cohen et al., Paper X 2000ApJ...538...29C 2000ApJ...538...29C, Cat. J/ApJ/538/29
Carlberg et al., Paper XI 2000ApJ...532L...1C 2000ApJ...532L...1C
Hogg et al., Paper XII 2000ApJ...545...32H 2000ApJ...545...32H
Cohen, Paper XIII 2001AJ....121.2895C 2001AJ....121.2895C, Cat. J/AJ/121/2895
Van den Bergh et al., Paper XIV 2000AJ....120.2190V 2000AJ....120.2190V Cat. J/AJ/120/2190
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 12-Nov-2001