1996/06/19 by Roger Coziol, Coziol, Roger
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9606115
4 pages with 2 encapsulated postscript figures, ASP Conf. macros included, to appear in the proceeding of the "IAGUSP Workshop on Young Galaxies and QSO Absorbers", April 8-11 , 1996 Santos, SP - Brasil, also available at ftp://das.inpe.br/pub/coziol/paper2/ (150.163.31.106)
In a diagram of metallicity (z) vs. luminosity (MB), the different types of nearby (Z < 0.05) starburst galaxies seem to follow the same linear relationship as the normal spiral and irregular galaxies. However, for comparable luminosities the more massive starburst nucleus galaxies (SBNGs) show a slight metallic defficiency as compared to the giant spiral galaxies. Furthermore, the SBNGs do not seem to follow the same relationship between z and Hubble type (T) than the normal galaxies. The early-type SBNGs are metal poor as compared to normal galaxies. It may suggests that the chemical evolution of a majority of the nearby starbursts galaxies is not completely over and that the present burst represent an important phase of this process.