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Lenticular Galaxy Formation - Possible Luminosity Dependence

Sudhanshu Barway·Ajit Kembhavi·Yogesh Wadadekar·C. D. Ravikumar·Y. D. Mayya
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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.

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Sudhanshu Barway, Ajit Kembhavi, Yogesh Wadadekar, C. D. Ravikumar, Y. D. Mayya. 2007-03-27. Lenticular Galaxy Formation - Possible Luminosity Dependence. https://doi.org/10.1086/518422

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