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J/PASP/111/438 Updated Zwicky catalog (UZC) (Falco+, 1999)
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The updated Zwicky catalog (UZC).
Falco E.E., Kurtz M.J., Geller M.J., Huchra J.P., Peters J., Berlind P.,
Mink D.J., Tokarz S.P., Elwell B.
<Publ. Astron. Soc. Pac. 111, 438 (1999)>
=1999PASP..111..438F (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxy catalogs ; Redshifts
Abstract:
The Zwicky Catalog of galaxies (ZC), with m_Zw_<=15.5, has been the
basis for the Center for Astrophysics (CfA) redshift surveys. To date,
analyses of the ZC and redshift surveys based on it have relied on
heterogeneous sets of galaxy coordinates and redshifts. Here we
correct some of the inadequacies of previous catalogs by providing (1)
coordinates with ~<2" errors for all of the 19,369 catalog galaxies,
(2) homogeneously estimated redshifts for the majority (98%) of the
data taken at the CfA (14,632 spectra), and (3) an estimate of the
remaining "blunder" rate for both the CfA redshifts and for those
compiled from the literature. For the reanalyzed CfA data we include a
calibrated, uniformly determined error and an indication of the
presence of emission lines in each spectrum. We provide redshifts for
7257 galaxies in the CfA2 redshift survey not previously published;
for another 5625 CfA redshifts we list the remeasured or uniformly
rereduced value. Among our new measurements, 1807 are members of UZC
"multiplets" associated with the original Zwicky catalog position in
the coordinate range where the catalog is 98% complete.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 72 19372 UZC catalog
table2.dat 130 295 Velocity sources for the UZC
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See also:
VII/190 : Zwicky Galaxy Catalog (Zwicky+ 1968)
VII/193 : The CfA Redshift Catalogue, Version June 1995 (Huchra+ 1995)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000)
3- 4 I2 min RAm Right ascension (J2000)
5- 8 F4.1 s RAs Right ascension (J2000)
9 A1 --- DE- Declination sign (J2000)
10- 11 I2 deg DEd Declination (J2000)
12- 13 I2 arcmin DEm Declination (J2000)
14- 15 I2 arcsec DEs Declination (J2000)
17- 20 F4.1 mag Bmag B magnitude (Zwicky magnitude)
22- 26 I5 km/s cz ? Heliocentric redshift
28- 30 I3 km/s e_cz ? rms uncertainty on cz
32 A1 --- T [ABE] Spectral type (1)
34 I1 --- U [0/4] UZC class 0-4 (5481=o, 5875=v) (2)
36 I1 --- N Number of UZC neighboring galaxies, within 3'
38- 49 A12 --- Zname Zwicky label based on 1950 positions
51 A1 --- r_cz [FMTXZ] Origin of the redshift measurement (3)
53- 56 I4 --- Ref ? Reference code in file table2.dat
(blank for CfA unpublished data)
58- 68 A11 --- Name Other name
70 A1 --- UZC [*] UZC multiplicity, * if multiple
72 A1 --- NED [TPG] NED multiplicity,
(P)air, (T)riple, (G)roup
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Note (1): A: absorption
E: emission
B: both emission and absorption
Note (2): 1: A "hit" with positional difference {DELTA}{theta}<=180{deg}, again
with a GSC brightness in the vicinity of the ZNCAT value. However,
the field is centered on a GSC "star" rather than on a "nonstar",
but there is only one possible ZC galaxy nearby, within the field.
Thus, index 1 merely indicated that the nearest GSC object to the
ZCAT coordinates is a star rather than the appropriate galaxy.
2: A near "hit" with positional difference {DELTA}{theta}<=180{deg}.
However, there is confusion because there are at least two
galaxies with an estimated spread in magnitudes |{DELTA}m| within
the expected range, either of which could be a ZC galaxy.
3: A near "hit" with positional difference {DELTA}{theta}<=180{deg}
but with |{DELTA}m| outside the expected range, raising suspicions
about the match of the GSC object to the ZC galaxy.
4: No "hit" at all for positional difference {DELTA}{theta}<=180{deg};
i.e., there is no match for a ZC galaxy
Note (3): For data taken at the CfA: Z for Z-machine, M for the MMT, and F
for FAST spectra taken from our own and from other projects
X flags a low-S/N spectrum for Z-machine (FAST) measurements and
indicates a low S/N match with a spectrum at cz<100km/s.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Ref Reference number
6- 24 A19 --- BibCode BibCode
26- 32 A7 --- Cat Catalogue number
34- 61 A28 --- Aut Author names
63-130 A68 --- Rem Remarks
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History: Copied at http://cfa-www.harvard.edu/~falco/UZC
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(End) James Marcout, Patricia Bauer [CDS] 27-May-1999