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For refcode 1994AJ....108.1598F:
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1994AJ....108.1598F HUBBLE SPACE TELESCOPE PHOTOMETRY OF THE CENTRAL REGIONS OF VIRGO CLUSTER ELLIPTICAL GALAXIES. III. BRIGHTNESS PROFILES LAURA FERRARESE Johns Hopkins University and Space Telescope Science Institute, Baltimore, Maryland 21218 Electronic mail: ferrares@jhufos.pha.jhu.edu FRANK C. VAN DEN BOSCH Leiden Observatory, Leiden, The Netherlands Electronic mail: vdbosch@strw.Ieidenuniv.nI HOLLAND C. FORD Johns Hopkins University and Space Telescope Science Institute, Baltimore, Maryland 21218 Electronic mail: ford@jhufos.pha.jhuyedu WALTER JAFFE Leiden Observatory, Leiden, The Netherlands Electronic mail: jaffe@strw.Ieidenuniv.nl ROBERT W. O'CONNELL University of Virginia, Charlottesville, Virginia 22903 Electronic mail: rwo@perseus.astro.virginia.edu Received 1994 March 9; revised 1994 June 17 ABSTRACT We have used the Planetary Camera on the Hubble Space Telescope to study the morphology and surface brightness parameters of a luminosity-limited sample of fourteen elliptical galaxies in the Virgo cluster. The total apparent blue magnitudes of the galaxies range between 9.4 and 13.4. In this paper, the core brightness profiles are presented, while the overall morphology and the isophotal shapes are discussed in two companion papers [Jaffe et al. AJ, 108,1567(1994); van den Bosch et al. AJ, 108, 1579 (1994)]. We show that, in spite of the spherical aberration affecting the HST primary mirror, deconvolution techniques allow recovery of the brightness profile up to 0.2 arcsec from the center of the galaxies. We find that none of the galaxies has an isothermal core. On the basis of their morphological and photometrical properties, the galaxies can be divided in two physically distinct groups, referred to as Type I and Type II. All of the Type I galaxies are classified as E1 to E3 in the Revised Shapley Ames Catalog (Sandage & Tammann 1981), while Type II galaxies are classified as E5 to E7. The characteristics of Type II galaxies are explained by the presence of disks component on both the 1 arcsec and the 10 arcsec scales, while Type I galaxies correspond to the classical disk- free ellipticals.
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