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J/MNRAS/269/151 APM cluster redshift survey (Dalton+, 1994)
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The APM galaxy survey. IV. Redshifts of rich clusters of galaxies.
Dalton G.B., Efstathiou G., Maddox S.J., Sutherland W.J.
<Mon. Not. R. Astron. Soc. 269, 151 (1994)>
=1994MNRAS.269..151D (SIMBAD/NED Reference)
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ADC_Keywords: Clusters, galaxy ; Redshifts
Keywords: galaxies: clustering - galaxies: distances and redshifts -
cosmology: observations.
Abstract:
We present redshifts for a sample of 228 clusters selected from the
APM Galaxy Survey, 188 of which are new redshift determinations.
Redshifts are listed for 365 galaxies, and non-cluster galaxy
redshifts have been rejected from this sample using a likelihood ratio
test based on the projected and apparent magnitude distributions of
each cluster region. We test this technique using clusters for which
redshifts have been measured for more than 10 galaxies. Our redshift
sample is nearly complete and has been used in previous papers to
study the three-dimensional distribution of rich clusters of galaxies.
156 of the clusters in our sample are listed in the Abell catalogue or
supplement, and the remainder are new cluster identifications.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 36 Clusters for which redshifts were found in
Andernach's compilation
table2.dat 55 23 *Clusters observed using AUTOFIB
table3.dat 61 365 Redshifts for galaxies in clusters observed
using a single slit
table4.dat 55 205 *Cluster redshifts obtained using the
likelihood ratio test
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Note on Table2.dat and Table4.dat:
Tables were corrected according to the Erratum published
in Mon. Not. R. Astron. Soc. 273, 528 (1995)
See also:
1995MNRAS.273..258D : (Erratum)
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 1950
4- 5 I2 min RAm Right ascension 1950
7- 10 F4.1 s RAs Right ascension 1950
12 A1 --- DE- Declination sign
13- 14 I2 deg DEd Declination 1950
16- 17 I2 arcmin DEm Declination 1950
19- 20 I2 arcsec DEs Declination 1950
23- 27 F5.2 mag mX []? Characteristic magnitude (1)
29- 32 F4.1 --- R []? Richness (1)
35- 39 F5.3 --- z Redshift
45- 49 A5 --- Abell Abell name
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Note (1): Those clusters with no entries in mX and R are nearby systems which
could be missed in the percolation stage of our cluster selection
procedure
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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- 2 I2 h RAh Right ascension 1950
4- 5 I2 min RAm Right ascension 1950
7- 10 F4.1 s RAs Right ascension 1950
12 A1 --- DE- Declination sign
13- 14 I2 deg DEd Declination 1950
16- 17 I2 arcmin DEm Declination 1950
19- 20 I2 arcsec DEs Declination 1950
23- 27 F5.2 mag mX []? Characteristic magnitude (1)
29- 32 F4.1 --- R []? Richness (1)
35- 39 F5.3 --- z Redshift
42- 43 I2 --- o_z Number of galaxies for which redshifts
were obtained
45- 49 A5 --- Abell Abell name
50 A1 --- Sep [/] when Abell2 exists
51- 55 A5 --- Abell2 Second Abell name
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Note (1): Those clusters with no entries in mX and R were included in the
original selection for the AUTOFIB observations and are included in
the final list as nearby systems
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension 1950
3- 4 I2 min RAm Right ascension 1950
5- 9 F5.2 s RAs Right ascension 1950
11 A1 --- DE- Declination sign
12- 13 I2 deg DEd Declination 1950
14- 15 I2 arcmin DEm Declination 1950
16- 19 F4.1 arcsec DEs Declination 1950
23- 28 F6.4 --- zObs Observed redshift
32- 37 F6.4 --- zL Maximum likelihood redshift estimate
43- 46 F4.2 % Proba Probability to be a cluster member
47 A1 --- n_Proba [*] Note on Proba (1)
49- 54 F6.4 --- z []? Adopted maximum likelihood redshift
57- 60 F4.2 % Proba2 []? Adopted probability of cluster membership
61 A1 --- n_Proba2 [t*] Note on Pint (1)
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Note (1): * : This galaxy is rejected on the basis of the likelihood ratio test
t : The likelihood function for this cluster is unstable. If the
galaxy redshifts agree then this is adopted as the cluster
redshift.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension 1950
4- 5 I2 min RAm Right ascension 1950
7- 10 F4.1 s RAs Right ascension 1950
12 A1 --- DE- Declination sign
13- 14 I2 deg DEd Declination 1950
16- 17 I2 arcmin DEm Declination 1950
19- 20 I2 arcsec DEs Declination 1950
23- 27 F5.2 mag mX []? Characteristic magnitude (1)
29- 32 F4.1 --- R []? Richness (1)
35- 39 F5.3 --- z Redshift
42- 43 I2 --- r_z Source of the redshift
45- 49 A5 --- Abell Abell name
50 A1 --- Sep [/] when Abell2 exists
51- 55 A5 --- Abell2 Second Abell name
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Note (1): 1: This work (AAT long-slit)
2: This work (A.N.U. 2.3m)
3: Data taken form Andernach (1991)
4: Obtained from Huchra (private communication)
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Historical Notes:
* 23-Feb-1995: Keypunched at CDS
* 01-Jun-1995: Thanks to H. Andernach, errata reported in tables 2 and 4.
* 02-Dec-1998: Thanks to Ivan Valtchanov (ivan@astro.bas.bg), three
further typos corrected in table3.
* 07-May-1999: Thanks to H. Andernach, furhter errors corrected in table3.
References:
Andernach H.J., 1991, in Latham D.W., da Costa L.A.N., eds, ASP
Conf. Ser., Large-Scale Structure and Peculiar Motions. Astron.
Soc. Pac., San Francisco, P. 279
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(End) James Marcout, Patricia Bauer, Francois Ochsenbein [CDS] 01-Jun-1995