Disky Ellipticals in the Hubble Sequence

  • Cecilia Scorza
  • Ralf Bender
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 171)


About one third of the elliptical galaxies show disky isophotes (Bender et al. 1989). These are low luminosity objects, are rotationally flattened (Carter 1987, Bender 1988b, Nieto 1988), are much weaker radio emitters than ellipticals in average and show no strong X-ray emission in excess of their discrete sources contribution. They have pointed isophotes which are thought to reflect the presence of embedded stellar disks. A large number of these disks could be hidden due to low inclinations (Rix and White 1990). Because of these properties, which makes them strongly resemble S0 galaxies, it has been suggested that disky ellipticals form together with S0s and spirals a continuous transition in D/B ratio in the Hubble sequence (Bender 1988b, Nieto 1988). However, until the present, this hypothesis had not been investigated throughout.


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  1. Barnes, J.E., 1993, The Formation of Galaxies, proceedings of the V Canary Islands Winter School of Astrophysics, ed. Munoz-Tunon, C., Cambridge University PressGoogle Scholar
  2. Bender, R., 1988b, Astr. Ap., 202, L5ADSGoogle Scholar
  3. Bender, R., Surma, P., Döbereiner, S., Möllenhoff, C., Madejsky, R., 1989, Astr. Ap., 217, 35ADSGoogle Scholar
  4. Bender, R., 1990, Astr. Ap., 229, 441.ADSGoogle Scholar
  5. Bender, R., Saglia, R.P., Gerhard, O.E., 1994, MNRAS, 269, 785ADSGoogle Scholar
  6. Carlberg, R.G., 1986, Ap. J., 310, 593ADSCrossRefGoogle Scholar
  7. Carter, 1987, Ap. J., 312, 514ADSCrossRefGoogle Scholar
  8. Hernquist, L., Barnes, J.E., 1991, Letters to Nature 354, 210ADSCrossRefGoogle Scholar
  9. Kormendy, J., 1987, in the IAU Symposium 127 Structure and Dynamics of Elliptical Galaxies, eds. T. de ZeeuGoogle Scholar
  10. Kormendy, J., et al. 1995, this proceedingsGoogle Scholar
  11. Kent, S., 1985, Ap. J. Suppl. Series, 59, 115ADSCrossRefGoogle Scholar
  12. Nieto, J-L., 1988, 2da Reunion de Astronomia Extragalactica, Academia Nacional de Ciencias de Cordoba, Cordoba Argentina, p. 239Google Scholar
  13. Rix, H.-W., White, S., 1990, Ap. J., 362, 52ADSCrossRefGoogle Scholar
  14. Scorza, C., Bender, R., 1990, Astr. Ap., 235, 49ADSGoogle Scholar
  15. Scorza, C., Bender, R., 1995, Astr. Ap., 293, 20ADSGoogle Scholar
  16. Steinmetz, M., Buchner, S., 1995, in preparationGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • Cecilia Scorza
    • 1
  • Ralf Bender
    • 2
  1. 1.Landessternwarte KönigstuhlHeidelbergGermany
  2. 2.UniversitätssternwarteMünchenGermany

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