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J/A+AS/129/399 The ENACS Catalogue. V. (Katgert+ 1998)
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The ESO Nearby Abell Cluster Survey.
V. The catalogue: contents and instructions for use
Katgert P., Mazure A., den Hartog R., Adami C., Biviano A., Perea J.
<Astron. Astrophys. Suppl. Ser. 129, 399 (1998)>
=1998A&AS..129..399K (SIMBAD/NED BibCode)
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ADC_Keywords: Clusters, galaxy ; Redshifts ; Magnitudes
Keywords: galaxies: clusters - galaxies: redshifts - galaxies: photometry -
catalogs
Abstract:
We present the catalogue resulting from the ESO Nearby Abell Cluster
Survey (the ENACS), which contains redshifts and magnitudes for 5634
galaxies in the directions of 107 rich, nearby southern Abell cluster
candidates. We describe the contents of the catalogue and discuss the
results of a comparison between the ENACS catalogue and the COSMOS
Galaxy Catalogue. When cross-correlating the two catalogues we find
that, at least in the areas of the ENACS clusters, the completeness of
the COSMOS catalogue is somewhat lower than was estimated previously
for the carefully analyzed and well-calibrated part of the COSMOS
catalogue known as the Edinburgh-Durham Southern Galaxy Survey
(EDSGC). The galaxy positions in the COSMOS and ENACS catalogues are
found to be on the same system to within about one arcsecond. For the
clusters for which the photometry in the ENACS and COSMOS catalogues
is based on the same survey plates, the two magnitude scales agree
very well. We confirm that the photometric calibration in the EDSGC
subset of the COSMOS catalogue is of higher quality than in the EDSGC
complement. The ENACS galaxy samples are unbiased subsets of the
COSMOS catalogue as far as the projected galaxy distribution is
concerned, except in only a few cases. We summarize how the ENACS
galaxy samples are subsets of the COSMOS catalogues in the ENACS
apertures, with respect to magnitude. For the ENACS catalogue as a
whole, we describe the apparent incompleteness at faint magnitudes and
towards higher redshifts. Finally, we provide some detailed
information about the ENACS catalogue that is essential for its proper
statistical use and we summarize some facts that must be remembered
when selecting subsets of galaxies from it. Objects:
Description:
Table enacs presents the full ENACS catalogue: i.e. redshifts and
photometry of 5634 galaxies in the directions of 107 rich Southern
cluster candidates from the ACO catalogue.
Table 2 of this paper lists additional redshifts from the literature
for 33 galaxies contained within the Optopus areas of 4 clusters
observed in the ENACS.
Table 5 of this paper lists the centre of the Optopus plates and the
dates of the Optopus observations
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
enacs.dat 74 5634 The ENACS catalogue
table2.dat 51 33 Additional Redshifts for Galaxies in the
Optopus Areas
table5.dat 39 190 Centres of Optopus Plates and Optopus
Observing Dates
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See also:
J/A+A/310/8 : The ESO Nearby Abell Cluster Survey I. (Katgert+, 1996)
J/A+A/310/31 : The ESO Nearby Abell Cluster Survey II. (Mazure+ 1996)
Byte-by-byte Description of file: enacs.dat
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Bytes Format Units Label Explanations
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2- 5 I4 --- ACO ACO (Cat. <VII/4>) number of the target cluster
7- 9 I3 --- Seq Sequence number of galaxy in cluster survey
(total number of redshifts in the survey)
12- 13 I2 h RAh Right ascension (B1950)
15- 16 I2 min RAm Right ascension (B1950)
18- 22 F5.2 s RAs Right ascension (B1950)
24 A1 --- DE- Declination sign
25- 26 I2 deg DEd Declination (B1950)
28- 29 I2 arcmin DEm Declination (B1950)
31- 34 F4.1 arcsec DEs Declination (B1950)
37- 41 F5.2 mag Rmag25 R-band magnitude within 25th mag/arcsec^2^ (1)
43- 47 I5 km/s cz Adopted heliocentric velocity of galaxy
49- 51 I3 km/s e_cz Estimated error in adopted velocity
53- 57 I5 km/s czabs Heliocentric velocity from absorption lines (1)
59- 62 F4.2 --- R R-parameter of cross-correlation
(Tonry & Davis, 1979AJ.....84.1511T) (1)
64- 68 I5 km/s czemi Heliocentric velocity from emission lines (1)
70 I1 --- LC [0/7] Emission line code (2)
72 I1 --- EC [0/5] Excitation code (3)
74 I1 --- CI [0/3] Continuum index (4)
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Note (1): A value of 0.00 means not available
Note (2): 0: no emission lines seen
1: OII {lambda} 3727
2: H{beta}
3: OII {lambda} 3727 + H{beta}
4: OIII {lambda} 4959/5007
5: OII {lambda} 3727 + OIII {lambda} 4959/5007
6: H{beta} + OIII {lambda} 4959/5007
7: OII {lambda} 3727 + H{beta} + OIII {lambda} 4959/5007
Note (3): 0: not available
1: H{beta} > OIII {lambda} 5007
2: OIII {lambda} 5007 > H{beta} > OIII {lambda} 4959
3: H{beta} ~ OIII {lambda} 4959
4: H{beta} < OIII {lambda} 4959
5: AGN (i.e.: very broad H{beta})
Note (4): Not given for spectra without emission lines
0: not available
1: featureless
2: metallic absorption lines
3: strong absorption under H{beta}
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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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2- 5 I4 --- ACO Number (Cat. <VII/4>) of the target cluster
8- 9 I2 h RAh Right ascension (B1950)
11- 12 I2 min RAm Right ascension (B1950)
14- 18 F5.2 s RAs Right ascension (B1950)
20 A1 --- DE- Declination sign
21- 22 I2 deg DEd Declination (B1950)
24- 25 I2 arcmin DEm Declination (B1950)
27- 30 F4.1 arcsec DEs Declination (B1950)
33- 37 F5.2 mag Rmag25 R-band magnitude within 25th mag/arcsec^2^
40- 44 I5 km/s cz Adopted heliocentric velocity of galaxy
46- 48 I3 km/s e_cz Estimated error in adopted velocity
51 I1 --- Ref [1/7] Reference to literature source (1)
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Note (1): 1: Zabludoff et al., 1993, Cat. <J/AJ/106/1273>
2: Huchra et al., 1995, Cat. <VII/193>
3: Faber et al. 1977AJ.....82..187F
4: Beers et al., 1991AJ....102.1581B
5: Hill et al., 1993, Cat. <J/AJ/106/831>
6: Malumuth et al., 1992AJ....104..495M
7: Quintana et al., 1985AJ.....90..410Q
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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2- 5 I4 --- ACO Number of the target cluster
8- 9 I2 h RAh Right ascension (B1950)
11- 12 I2 min RAm Right ascension (B1950)
14- 17 F4.1 s RAs Right ascension (B1950)
19 A1 --- DE- Declination sign
20- 21 I2 deg DEd Declination (B1950)
23- 24 I2 arcmin DEm Declination (B1950)
26- 27 I2 arcsec DEs Declination (B1950)
30- 37 A8 "DD/MM/YY" Date Observing date
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Acknowledgements: Peter Katgert <katgert@strw.leidenuniv.nl>
References:
Biviano et al., Paper III. 1997A&A...321...84B
Adami et al., Paper IV. 1998A&A...331..493A
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(End) Francois Ochsenbein [CDS] 20-Apr-1998