EDP Sciences
Free access
Volume 400, Number 2, March III 2003
Page(s) 429 - 436
Section Galactic structure and dynamics
DOI http://dx.doi.org/10.1051/0004-6361:20030037

A&A 400, 429-436 (2003)
DOI: 10.1051/0004-6361:20030037

The effects of binaries on the evolution of UV spectral features in massive starbursts

H. Belkus, J. Van Bever, D. Vanbeveren and W. van Rensbergen

Astrophysical Institute, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
    e-mail: hbelkus@vub.ac.be;jvbever@vub.ac.be;dvbevere@vub.ac.be;wvanrens@vub.ac.be
(Received 5 April 2002 / Accepted 13 December 2002)

In this paper we investigate the effects of binaries having an initial period between 1 day and 10 years on the theoretical simulation of the evolution of UV spectral features in massive starbursts. The binary evolutionary processes that dominate the evolution of the considered spectral features are the Roche lobe overflow in Case Br systems, the mass transfer rate and the merger rate. They cause UV spectral rejuvenation in starbursts that are older than 5 Myr.

Key words: stars: binaries: close -- galaxies: starburst -- ultraviolet: galaxies

Offprint request: H. Belkus

© ESO 2003

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