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For refcode 1994AJ....108.1579v:
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1994AJ....108.1579v HUBBLE SPACE TELESCOPE PHOTOMETRY OF THE CENTRAL REGIONS OF VIRGO CLUSTER ELLIPTICAL GALAXIES. II. ISOPHOTE SHAPES FRANK C. VAN DEN BOSCH Leiden Observatory, Leiden, The Netherlands Electronic mail: vdbosch@strw.leidenuniv.nl LAURA FERRARESE Johns Hopkins University, Space Telescope Science Institute, Baltimore, Maryland 21218 Electronic mail: ferrares@jhufos.pha.jhu.edu WALTER JAFFE Leiden Observatory, Leiden, The Netherlands Electronic mail: jaffe@strw.leidenuniv.nl HOLLAND C. FORD Johns Hopkins University, Space Telescope Science Institute, Baltimore, Maryland 21218 Electronic mail: ford@jhufos.pha.jhu.edu 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 The isophotal shapes of a magnitude limited sample of Virgo ellipticals are presented. These are derived from high resolution HST photometry. The absence of atmospheric seeing and accurate knowledge of the PSF allows us to perform an accurate deconvolution. Model galaxies were constructed to test the deconvolution algorithms used, and showed that we can accurately recover isophotal shape parameters down to 0.5". From the isophotal parameters we can classify the galaxies in two subsamples: disky and non- disky galaxies. In three of these disky galaxies we found evidence for a nuclear stellar disk in the inner 1.5". In addition these galaxies also have an outer disk, that seems to break up inside 2"-3". In the two galaxies for which there is kinematic evidence from the literature of a decoupled core, we found no indication for such subsystem from the isophotal shape analysis. In 80% of these early type galaxies there are indications for dust. For eight of these galaxies the dust has not been detected before.
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