Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-28T09:20:57.706Z Has data issue: false hasContentIssue false
  • English
  • Français

Star formation in bulges from GALEX

Published online by Cambridge University Press:  01 July 2007

Sukyoung K. Yi
Sukyoung K. Yi*
Affiliation:
Yonsei University, Department of Astronomy, Seoul 120-749, Korea email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Early-type galaxies, considered as large bulges, have been found to have had a much-more-than-boring star formation history in recent years by the UV satellite GALEX. The most massive bulges, brightest cluster galaxies, appear to be relatively free of young stars. But smaller bulges, normal ellipticals and lenticulars, often show unambiguous sign of recent star formation in their UV flux. The fraction of such UV-bright bulges in the volume-limited sample climbs up to the staggering 30%. The bulges of spirals follow similar trends but a larger fraction showing signs of current and recent star formation. The implication on the bulge formation and evolution is discussed.

Keywords

galaxies: bulgesgalaxies: ellipticallenticularcDgalaxies: evolutiongalaxies: formationgalaxies: stellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 385 - 390
Copyright
Copyright © International Astronomical Union 2008

References

Baldwin, J. A., Philips, M. M., & Terlevich, R. 1981, PASP 93, 5CrossRefGoogle Scholar
Boselli, A. et al. 2005, ApJ 629, L29CrossRefGoogle Scholar
Burstein, D. et al. 1988, ApJ 328, 440CrossRefGoogle Scholar
Dekel, A. & Silk, J. 1986, ApJ 303, 39CrossRefGoogle Scholar
Donas, K. et al. 2007, ApJS in press (Dec. Issue)Google Scholar
Dorman, B., O'Connell, R. W., & Rood, R. T. 1995, ApJ 442, 105CrossRefGoogle Scholar
Gregg, M. 1989, ApJ 337, 45CrossRefGoogle Scholar
Kaviraj, S. et al. 2007, ApJS in press (Dec. Issue)Google Scholar
Kennicutt, R. C. & Kormendy, J. 2004, ARAA 42, 630Google Scholar
Lee, Y.-W. et al. 2005, ApJ 619, L103CrossRefGoogle Scholar
Martin, D. C. et al. 2005, ApJ 619, L1CrossRefGoogle Scholar
Morrissey, D. C. et al. 2005, ApJ 619, L7CrossRefGoogle Scholar
O'Connell, R. W. 1999, ARAA 37, 603CrossRefGoogle Scholar
Proctor, R. & Sansom, A. 2002, MNRAS 333, 517CrossRefGoogle Scholar
Ree, C. H. et al. 2007, ApJS in press (Dec. Issue)Google Scholar
Rich, R. M. et al. 2005, ApJ 619, L107CrossRefGoogle Scholar
Schawinski, K. et al. 2007, ApJS in press (Dec. Issue)Google Scholar
Tremaine, S. et al. 2002, ApJ 574, 740CrossRefGoogle Scholar
Yi, S., Lee, Y.-W., Woo, J.-H., Park, J.-H., Demarque, P., & Oemler, A. 1999, ApJ 513, 1281CrossRefGoogle Scholar
Yi, S. K. et al. 2005, ApJ 619, L111CrossRefGoogle Scholar