The V_c-sigma₀ relation in Low Surface Brightness galaxies: including the light concentration

2009/05/07 by A. Caon, Caon, A., A. Pizzella +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph.CO #astro-ph.GA

paper · pdf · doi:10.48550/arxiv.0905.1057

Poster presented at the international meeting "Galaxy Properties across Cosmic Ages" held in Rome, Accademia dei Lincei, April 28-29, 2009. (6 pages and 5 figures)

arxiv created 2009/05/07 · openalex publication_date 2009/05/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It has been found that there is a strong correlation between the circular velocity V_c and the central stellar velocity dispersion σ₀ 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-σ₀ is partially due to the different concentration of the light distribution. In this work we measure the C₂8 concentration parameter for a sample of 17 LSB finding that the C₂8 parameter does not account for the different behavior in the V_c - σ₀ for this class of objects.

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