A Non-Parametric Estimate of Mass 'Scoured' in Galaxy Cores

Details A Non-Parametric Estimate of Mass 'Scoured' in Galaxy Cores A Non-Parametric Estimate of Mass 'Scoured' in Galaxy Cores

2010-06-02

arxiv.org/abs/1006.0488v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

11 pages, 5 figures, accepted to MNRAS

Scientific paper

We present a simple estimate of the mass 'deficits' in cored spheroids, as a function of galaxy mass and radius within the galaxy. Previous attempts to measure such deficits depended on fitting some functional form to the profile at large radii and extrapolating inwards; this is sensitive to the assumed functional form and does not allow for variation in nuclear profile shapes. We take advantage of larger data sets to directly construct stellar mass profiles of observed systems and measure the stellar mass enclosed in a series of physical radii (M(

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