Advertisement

Colours of the Envelopes of cD Galaxies

  • S. N. Kemp
  • V. Guzmán Jiménez
  • P. Ramírez Beraud
  • J.A. Pérez Grana
  • V.H. Ramírez Siordia
  • F.J. Hernández Ibarra
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

Summary

We have carried out BVR surface photometry of a sample of 6 cD and cD-like galaxies using the 2.1 m telescope at San Pedro Mártir, in general reaching surface brightnesses well into the cD envelope. In the majority of cases no appreciable colour gradient was detected, and the envelope has the same red colour as the central galaxy. In the two cD-like galaxies a redward gradient was observed, although in both these cases no extended envelope was detected, possibly due to contamination from neighbouring galaxies. The centre of NGC 1275 (one of the cD-like galaxies) is bluer due to many regions of active star formation. In two cDs with multiple nuclei (A193 and A2634), no colour gradients or regions of current active star formation were found. These results favour an early, ‘primordial origin’ for the cD envelope, the stellar populations of the envelope being coeval with those of the central elliptical galaxy.

Keywords

Star Formation Stellar Population Colour Gradient Multiple Nucleus Active Star Formation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Fabian, A. C., Nulsen, P. E. J., & Canizares, C. R. 1982, MNRAS, 201, 933ADSGoogle Scholar
  2. Feldmeier, J. J., et al. 2002, APJ, 575, 779CrossRefADSGoogle Scholar
  3. Gallagher, J. S., & Ostriker, J. P. 1972, 77, 288Google Scholar
  4. Guzmán Jiménez, V. 2006, Estudio fotométrico de los colores de las envolventes de una muestra de galaxias cD. Masters thesis, Universidad de Guadalajara, Guadalajara.Google Scholar
  5. Hoessel, J. G., & Schneider, D. P. 1985, AJ, 90, 1648CrossRefADSGoogle Scholar
  6. Jordán, A., et al. 2004, AJ, 127, 24Google Scholar
  7. Johnstone, R. M., & Fabian, A. C. 1989 MNRAS, 237, 27PGoogle Scholar
  8. Joy, M., et al. 1995, ApJ, 449, L113Google Scholar
  9. Kemp, S. N., & Meaburn, J. 1991, MNRAS, 251, 10PGoogle Scholar
  10. Maccagni, D., Garilli, B., Giola, I. M., et al. 1988, ApJ, 334, L1Google Scholar
  11. Mackie, G. 1992, ApJ, 400, 65Google Scholar
  12. Malumuth, E. M., & Richstone, D. O. 1984, ApJ, 276, 413Google Scholar
  13. Matthews, T. A., Morgan, W. W., & Schmidt, M. 1964, ApJ, 140, 35Google Scholar
  14. Merritt, D. 1984, ApJ, 276, 26Google Scholar
  15. Molinari, E., Buzzoni, A., et al. 1994, A&A, 292, 54Google Scholar
  16. Oemler, A. Jr. 1976, ApJ, 209, 693Google Scholar
  17. Ramírez Beraud, P. 2007, Los colores infrarrojos de las galaxias cD, Master thesis, Universidad de Guadalajara, Guadalajara.Google Scholar
  18. Richstone, D. O. 1976, ApJ, 204, 642Google Scholar
  19. Schombert, J. M. 1988, ApJ, 328, 475Google Scholar
  20. Seigar, M. S., Graham, A. W., & Jerjen, H. 2007, MNRAS, 378, 1575Google Scholar
  21. Yi, S. K., Yoon, S.-J., Kaviraj, S., et al. 2005, ApJ, 619, L111Google Scholar

Copyright information

© Springer-Verlag New York 2009

Authors and Affiliations

  • S. N. Kemp
    • 1
    • 2
  • V. Guzmán Jiménez
    • 1
    • 2
  • P. Ramírez Beraud
    • 1
    • 2
  • J.A. Pérez Grana
    • 1
    • 2
  • V.H. Ramírez Siordia
    • 1
    • 2
  • F.J. Hernández Ibarra
    • 1
    • 2
    • 3
  1. 1.Instituto de Astronomí a y Meteorologí aUniversidad de GuadalajaraCP 44130 GuadalajaraMéxico
  2. 2.Departamento de Fí sica CUCEIUniversidad de GuadalajaraGuadalajaraMéxico
  3. 3.Centro de Radioastronomí a y Astrofí sicaUniversidad Nacional Autónoma de MéxicoMoreliaMéxico

Personalised recommendations