Advertisement

QSO Host Galaxy Star Formation History from Multicolour Data

  • Knud Jahnke
  • Björn Kuhlbrodt
  • Eva Örndahl
  • Lutz Wisotzki

Abstract

We investigate multicolour imaging data of a complete sample of low redshift (z < 0.2) QSO host galaxies. The sample was imaged in four optical (BVRi) and three near-infrared bands (JHKs), and in addition spectroscopic data is available for a majority of the objects.

We extract host luminosities for all bands by means of two-dimensional modeling of galaxy and nucleus. Optical and optical-to-NIR colours agree well with the average colours of inactive early type galaxies. The six independent colours are used to fit population synthesis models. We assess the presence of young populations in the hosts for which evidence shows to be very weak.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. C. Boisson, M. Joly, J. Moultaka, D. Pelat, M. Serote Roos, 2000, A&A, 357, 850BADSGoogle Scholar
  2. G. Bruzual & S. Chariot, 1996, unpublishedGoogle Scholar
  3. M. Fukugita, K. Shimasaku, T. Ichikawa, 1995, PASP, 107, 945ADSCrossRefGoogle Scholar
  4. D. Griersmith, A. R. Hyland, T. J. Jones, 1982, AJ, 87, 1106ADSCrossRefGoogle Scholar
  5. C. Leitherer et al., 1996, PASP, 108, 996ADSCrossRefGoogle Scholar
  6. T. Köhler, D. Groote, D. Reimers, L. Wisotzki, 1997, A&A, 325, 502ADSGoogle Scholar
  7. K. K. McLeod & G. H. Rieke, 1996, ApJ, 441, 96ADSCrossRefGoogle Scholar
  8. R. J. McLure, M. J. Kukula, J. S. Dunlop, S. A. Baum, C. P. O’Dea, D. H. Hughes,1999, MNRAS, 308, 377ADSCrossRefGoogle Scholar
  9. W. J. Percival, L. Miller, R. J. McLure, J. S. Dunlop, 2001, MNRAS, in press, astro-ph/0002199Google Scholar
  10. L. Wisotzki, N. Christlieb, N. Bade, V. Beckmann, T. Köhler, C. Vanelle, D. Reimers,2000, A&A, 358, 77ADSGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Knud Jahnke
    • 1
  • Björn Kuhlbrodt
    • 1
  • Eva Örndahl
    • 2
  • Lutz Wisotzki
    • 3
  1. 1.Hamburger SternwarteGermany
  2. 2.Astronomiska Observatoriet UppsalaSweden
  3. 3.Universität PotsdamGermany

Personalised recommendations