J/AJ/101/1561 J/AJ/101/1561 Isophotometry of 175 Brt. Ell. Gal. in Abell Clus. A C Porter D P Schneider J G Hoessel Astron. J. 101 1561 1991 1991AJ....101.1561P galaxies: clusters: general galaxies: elliptical and lenticular, cD galaxies: isophotometry Profiles of major- and minor-axis surface brightness, ellipticity, position angle, and isophote centroid are presently derived from isophotometry for a sample of 175 brightest cluster ellipticals (BCEs). The BCEs' average ellipticity is a sharply rising function of metric radius; less than a fourth of the sample exhibits significant ellipticity decrease with increasing radius. While at radii of less than 16 kpc the BCEs are rounder than the average elliptical, they become too flattened at radii greater than 30 kpc to represent a randomly-oriented oblate-spheroid population. These results indicate that BCE outer regions are dynamically strongly coupled to their either prolate or stringy clusters.

NGC 'N' denotes that the following number is of NGC; in other case (' '), is of Abell --- ABELL Abell cluster number * If NGC='N' then NGC number --- Z redshift of the BCE --- SEEING FWHM of the seeing in the CCD image arcsec E4 ellipticity for semimajor axis of 4 kpc * Blank space means the BCE was not observed at that radius, or the isophoto was discarded (see paper p1576r) --- E16 above of 16 kpc --- E64 above of 64 kpc --- PA4 position angle of the major-axis of 4 kpc (see E4 above) deg PA16 above of 16 kpc deg PA64 above of 64 kpc deg decr_E if ellipticity decreasing outwards anywhere in its profile: e" = 2nd outward derivative of E, ~ = nearly equal, cpx = complex --- const_E 'Y' denotes constant ellipticity --- TWIST 'Y' denotes significant isophoto twisting --- ASYM 'Y' denotes significant asymmetry --- tb1.texTeX file of Table 1 macro.texmacro file for tb1.tex Koichi Nakajima CDS 1993Dec07 UNKNOWN UNKNOWN The catalogue was provided by courtesy of A.C.Porter to H. Andernach; it was numbered A152 in H. Andernach's "List of Astronomical Catalogues and Documents kindly provided on request by various authors" 16-Apr-1994: First archived. (The date of the latest archiving, see the date of each file.) UNKNOWN UNKNOWN * The original file is in TeX form with a macro file. Conversion from TeX to ASCII form is made by H.Andernach. * The number of entries of table1 is 176 because a cD galaxy NGC4874 is included after the brightest cluster elliptical of A1656 (see paper p1576). * "BCE" stands for "brightest cluster elliptical(s)". J_AJ_101_1561.xml