Lenticular Galaxy Formation: Possible Luminosity Dependence
Open Access
- 19 April 2007
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 661 (1) , L37-L40
- https://doi.org/10.1086/518422
Abstract
We investigate the correlation between the bulge effective radius (r_e) and disk scale length (r_d), in the near-infrared K band for lenticular galaxies in the field and in clusters. We find markedly different relations between the two parameters as a function of luminosity. Lenticulars with total absolute magnitude fainter than M_T = -24.5 show a positive correlation, in line with predictions of secular formation processes for the pseudo bulges of late-type disk galaxies. But brighter lenticulars with M_T < -24.5 show an anti-correlation, indicating that they formed through a different mechanism. The available data are insufficient to reliably determine the effect of galaxy environment on this correlation.Keywords
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