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. =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 m_3_+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: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file tables.dat 56 1355 Galaxies data (table 3 to 10 of published paper) -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- Note (1): R1=1.5r1 where r1 = [int(0,rmax)I(r)r^2^dr]/[int(0,rmax)I(r)rdr] see Kron R.G., 1980ApJS...43..305K Note (2): The fixed aperture is (from Table 2 of the paper): --------------------------------------- Abell N RA1950 DE1950 radius --------------------------------------- 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 --------------------------------------- -------------------------------------------------------------------------------- History: * 21-Nov-1994: Keypunched at CDS ================================================================================ (End) Marie-Jose Wagner, Patricia Bauer [CDS] 21-Nov-1994