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J/ApJ/538/29 HDF-N Caltech faint galaxy redshift survey. X. (Cohen+, 2000)
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Caltech faint galaxy redshift survey.
X. A redshift survey in the region of the Hubble Deep Field North.
Cohen J.G., Hogg D.W., Blandford R., Cowie L.L., Hu E., Songaila A.,
Shopbell P., Richberg K.
<Astrophys. J. 538, 29 (2000)>
=2000ApJ...538...29C
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ADC_Keywords: Galaxy catalogs ; Surveys ; Redshifts
Keywords: cosmology: observations - galaxies: distances and redshifts -
galaxies: luminosity function, mass function - surveys
Abstract:
A redshift survey has been carried out in the region of the Hubble
Deep Field North using the Low Resolution Imaging Spectrograph (LRIS)
at the Keck Observatory. The resulting redshift catalog, which
contains 671 entries, is a compendium of our own data together with
published LRIS/Keck data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2a.dat 59 510 Redshift catalog for the flanking fields of the HDF
table2b.dat 60 146 Catalog for the HDF
table3.dat 52 15 Objects slightly outside the sample area
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See also:
J/ApJ/471/L5 : Redshift clustering in the Hubble Deep Field (Cohen+ 1996)
J/ApJS/127/1 : UGRK Photometry in the Hubble Deep field region (Hogg+, 2000)
Byte-by-byte Description of file: table2a.dat, table2b.dat, table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000.0)
4- 5 I2 min RAm Right ascension (J2000.0)
7- 11 F5.2 s RAs Right ascension (J2000.0)
13 A1 --- DE- Declination sign (J2000.0)
14- 15 I2 deg DEd Declination (J2000.0)
17- 18 I2 arcmin DEm Declination (J2000.0)
20- 24 F5.2 arcsec DEs Declination (J2000.0)
25 A1 --- l_Rmag Limit flag on Rmag
26- 30 F5.2 mag Rmag R magnitude
32- 36 F5.3 --- z ? Redshift
38- 39 I2 --- Qual [1/11]? Quality (1)
40 A1 --- u_Qual [?] ?: unknown quality
42- 43 A2 --- SpType Spectral type (2)
45- 55 A11 --- r_SpType Source (3)
57- 59 A3 --- Note Individual note (4)
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Note (1): Quality class (from Cohen et al., 1999ApJS..120..171C):
1: Multiple features, {sigma}(z)<=0.002/feature
2: Multiple features, {sigma}(z)<=0.004/feature
3: Multiple features, faint, id uncertain, {sigma}(z) small 75% of
time, and wildly off 25% of time
4: One emission line only, solid, assume 3727{AA}
5: One emission line only, reality uncertain, assume 3727{AA}
6: Multiple features, at least one broad emission line
7: Only one broad emission line, assumed to be 2800{AA}
8: Single break, assumed to be 4000{AA} break
9: Single strong absorption feature, assumed to be 2800{AA}
because of shape of continuum
11: Etremely faint objects (R>24.3) observed by the Caltech group
which turned up serendipitously in slitlets intended for some
brighter nearby galaxy and which show only a single emission line
with no sign of a continuum. In our previous work, for spectra
showing only a single emission line, the assumption was always
made that this line is the [O II] line at 3727{AA}. However, in
these particular cases, the objects are so faint that we have
instead assumed that the emission line is Ly{alpha}.
Note (2): Spectral type (from Cohen et al., 1999ApJS..120..171C):
E: galaxies have spectra dominated by emission lines
A: galaxies have spectra dominated by absorption lines
I: galaxies are of intermediate type
Q: galaxies with broad emission lines
B: Starburst galaxies showing the higher Balmer lines (H{gamma},
H{delta}, etc.) in emission
X: galaxies for which spectra were not available
M: stars with presence of TiO bands
(and/or CaH bands, for M subdwarfs)
S: stars with absence of TiO bands
(and/or CaH bands, for M subdwarfs)
Note (3): Source:
Previously published:
c96: Cohen et al., 1996, Cat. <J/ApJ/471/L5> (Caltech + Hawaii)
l96: Phillips et al., 1997ApJ...489..543P +
Lowenthal et al., 1997ApJ...481..673L
s96: Steidel et al., 1996AJ....112..352S (see also Dickinson 1998,
in The Hubble Deep Field, ed. M. Livio, S. M. Fall, & P. Madau
(Cambridge: Cambridge Univ. Press), 219)
s99: Steidel et al., 1999, Cat. <J/ApJ/519/1>
spi: Spinrad et al., 1998AJ....116.2617S
wad: Waddington et al., 1999ApJ...526L..77W
wey: Weymann et al., 1998ApJ...505L..95W
This paper:
cal: Cohen
haw: Hawaii
st0: Steidel
Note (4): Individual notes:
c: Supplementary object in Hogg et al. (2000, Cat. <J/ApJS/127/1>)
catalog
d: z changed from published value. See Appendix.
e: One of a close pair.
f: Available spectra are too red to see 4000{AA} region.
Galaxy spectral type could be E, EI, IE or I
g: Definite emission line at 8340{AA}, possible emission line at
6363{AA}. If both are real, z=0.271. If only the stronger one is
real, then z=1.238. Spectrum too red to reach 3727{AA} if z=0.271
h: changed from preliminary value in Hogg et al., 1998AJ....115.1418H
i: M subdwarf.
j: Continuum weak. Spectral type could be E, EI, IE or I
k: Emission in H{beta} stronger than in the [O III] line at 5007{AA}
l: Faint object in a confused region, match is uncertain.
m: The R mag is uncertain.
n: The R mag may be slightly too bright due to the close proximity of
a brighter galaxy.
o: Emission line at 8340{AA} is interpreted at H{alpha}.
Spectrum too red to reach 3727{AA} if z=0.271.
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Acknowledgements: From ApJ electronic version
References:
Cohen et al., Paper VII 1999ApJS..120..171C
Cohen et al., Paper VIII 1999ApJ...512...30C
Hogg et al., Paper IX 2000ApJS..127....1H, Cat. <J/ApJS/127/1>
Calberg et al., Paper XI 2000ApJ...532L...1C
Van den Bergh et al., Paper XIV 2000AJ....120.2190V
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(End) Patricia Bauer [CDS] 23-Oct-2000