2007/03/27 by Sudhanshu Barway, Ajit Kembhavi, Yogesh Wadadekar +2 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Elliptical galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Galaxy merger #Interacting galaxy #Lenticular galaxy #Luminosity #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/518422
Accepted for publication in ApJ Letters, 4 pages, 3 figures; minor typos are corrected
arxiv created 2007/03/27 · openalex publication_date 2007/04/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 pseudobulges of late-type disk galaxies. But brighter lenticulars with M T < -24.5 show an anticorrelation, indicating that they formed through a different mechanism. The available data are insufficient to reliably determine the effect of galaxy environment on these correlations.