J/A+AS/94/327 Nearby clusters of galaxies. I. (Trevese+, 1992)
Properties of nearby clusters of galaxies. I. A 195, A 465, A 1185, A 1213,
A 1413, A 1775, A 2319 and A 2597
Trevese D., Flin P., Migliori L., Hickison P., Pittella G.
<Astron. Astrophys. Suppl. Ser. 94, 327 (1992)>
=1992A&AS...94..327T 1992A&AS...94..327T (SIMBAD/NED Reference)
ADC_Keywords: Clusters, galaxy; Photometry
Keywords: clusters: of galaxies - cosmology - galaxies: general -
image processing.
Abstract:
A study of the properties of nearby clusters of galaxies has been
undertaken. This paper describes the data, derived from automated
scans of photographic plates. Different methods for the evaluation
of cluster center, ellipticity and orientation are compared and
errors are estimated by Monte Carlo simulations. We present the
results of the analysis of 1256 galaxies brighter than m3+3 in
eight Abell clusters. We find that different methods give consistent
estimates of ellipticity and orientation, provided the radial
dependence of these quantities is taken into account. We also find
that central densities are consistent with isothermal fits if the
center is selected as the baricenter of the cluster. For each galaxy,
rectangular coordinates, magnitude, size, ellipticity and
orientation are given. For each cluster we provide identification
maps and contour maps of galaxy surface density.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 56 1355 Galaxies data (table 3 to 10 of published paper)
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See also:
J/A+AS/110/313 : Clusters of galaxies properties. II. (Flin+ 1995)
J/A+AS/125/459 : Nearby clusters of galaxies properties. III. (Trevese+ 1997)
J/A+AS/146/373 : Nearby clusters of galaxies properties. IV. (Flin+ 2000)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1 A1 --- --- [A] for Abell catalog (VII/110)
3- 6 I4 --- Abell Abell catalog number
9- 11 I3 --- ID Identification number of the galaxy
13- 16 I4 arcsec X X rectangular abscissa (oriented from east
to west)
18- 21 I4 arcsec Y Y rectangular ordinate (oriented south to
north)
25- 26 I2 arcsec R1 Size R1 of the galaxy (1)
28- 31 F4.2 --- Eps Ellipticity
33- 35 I3 deg Theta Orientation of the major axis respect to the
positive y direction, increasing
counterclockwise
41- 44 F4.1 mag FmagT Total F magnitude (within R1)
49- 52 F4.1 mag FmagA F magnitude in a fixed circular aperture (2)
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Note (1): R1=1.5r1 where r1 = [int(0,rmax)I(r)r2dr]/[int(0,rmax)I(r)rdr]
see Kron R.G., 1980ApJS...43..305K 1980ApJS...43..305K
Note (2): The fixed aperture is (from Table 2 of the paper):
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Abell N RA1950 DE1950 radius
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195 1 01 24 48 +18 54 27 8.4
465 68 03 48 12 +06 10 00 8.4
1185 27 11 07 56 +29 02 41 6.7
1213 4 11 13 32 +29 40 16 5.0
1413 2 11 52 45 +23 40 49 3.4
1775 2 13 39 30 +26 37 56 8.4
2319 5 19 19 30 +43 50 51 5.0
2597 7 23 22 45 -12 23 57 7.4
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History:
* 21-Nov-1994: Keypunched at CDS
(End) Marie-Jose Wagner, Patricia Bauer [CDS] 21-Nov-1994