Morphological and Physical Classification of Galaxies

1. Front Matter

   Pages i-xix

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2. Invited Papers: Galaxy Types

   1. Morphology of Galaxies: An Overview

      • R. Buta

      Pages 1-16

   2. The Luminosity Functions of Galaxies

      • H. Jerjen, G. A. Tammann, B. Binggeli

      Pages 17-22

   3. Elliptical Galaxies

      • M. Franx

      Pages 23-38

   4. Structure and Kinematics of Spirals

      • P. C. van der Kruit

      Pages 39-52

   5. Brightest Cluster Members

      • J. M. Schombert

      Pages 53-68

   6. Central Regions of Early-Type Galaxies

      • J.-L. Nieto

      Pages 69-83

   7. Stellar Content and Chemical Evolution in Spheroidal Populations

      • R. M. Rich

      Pages 85-98

3. Invited Papers: Galaxian Components

   1. Stellar Disks in Early-Type Galaxies

      • M. Capaccioli, N. Caon

      Pages 99-114

   2. Gaseous Disks in Elliptical Galaxies

      • F. Bertola

      Pages 115-126

   3. Formation and Maintenance of Spiral Structure

      • E. Athanassoula

      Pages 127-138

   4. Dark Matter in Elliptical Galaxies

      • T. de Zeeuw

      Pages 139-152

   5. Dark Matter in Late-Type Galaxies

      • S. M. Kent

      Pages 153-162

   6. Dark Matter in Dwarf Galaxies

      • C. Pryor

      Pages 163-178

   7. Elliptical Galaxies in X-Rays

      • L. Ciotti, A. D’Ercole, S. Pellegrini, A. Renzini

      Pages 179-190

   8. The Warm Component of the ISM of Elliptical Galaxies

      • F. Macchetto, W. B. Sparks

      Pages 191-206

   9. Peculiar Kinematics

      • M. Balcells

      Pages 221-232

   10. Cold Gas in Elliptical Galaxies

       • J. H. van Gorkom

       Pages 233-238

   11. Cold Gas in Late-Type Galaxies

       • R. Sancisi

       Pages 239-244

4. Invited Papers: Galaxian Components

   1. The Bar Component in Disk Galaxies

      • A. Bosma

      Pages 207-220

The morphological scheme devised by Hubble and followers to classify galaxies has proven over many decades to be quite effective in directing our quest for the fundamental pa­ rameters describing the extragalactic manifold. This statement is however far more true for spirals than for ellipticals. Echoing the concluding remarks in Scott Tremaine's sum­ mary talk at the Princeton meeting on Structure and Dynamics of Elliptical Galaxies, "the Hubble classification of spirals is useful because many properties of spirals (gas con­ tent, spiral arm morphology, bulge prominence, etc. ) all correlate with Hubble time. By contrast, almost nothing correlates with the elliptical Hubble sequence El to E7. " During the last few years much effort has been put into the search for a more meaningful classification of ellipticals than Hubble's. Concomitantly, forwarded by some provocative conjectures by R. Michard, the classical question of whether E galaxies form a physically homogeneous family has been brushed up once more. Results of these and other parallel studies look rather promising and point to suture part of the dichotomy between ellipticals and disk galaxies which had become popular in the early eighties, owing to dynamical arguments. At the same time it appears more and more clear that, besides the usual genetic varieties of galaxies, products of environmental evolution must also be contemplated in building our modern picture of the "reign of galaxies" . The above considerations prompted us to solicit Prof.

• Galaxy
• Population
• galaxies
• interstellar matter
• star
• star formation
• stellar

• Osservatorio di Capodimonte, Napoli, Italy

  G. Longo, G. Busarello

• Osservatorio Astronomico, Università di Padova, Italy

  M. Capaccioli

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