The V_c-sigma_0 relation in Low Surface Brightness galaxies: including the light concentration

Details The V_c-sigma_0 relation in Low Surface Brightness galaxies: including the light concentration The V_c-sigma_0 relation in Low Surface Brightness galaxies: including the light concentration

2009-05-07

arxiv.org/abs/0905.1057v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Poster presented at the international meeting "Galaxy Properties across Cosmic Ages" held in Rome, Accademia dei Lincei, April

Scientific paper

It has been found that there is a strong correlation between the circular velocity V_c and the central stellar velocity dispersion \sigma_0 of galaxies. In this respect, low surface brightness galaxies (LSB) follow a different relation when compared to Elliptical and high surface brightness (HSB) galaxies. The intrinsic scatter of the V_c-\sigma_0 is partially due to the different concentration of the light distribution. In this work we measure the C_28 concentration parameter for a sample of 17 LSB finding that the C_28 parameter does not account for the different behavior in the $V_c - {\sigma}_0$ for this class of objects.

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