On the X-ray emission of the low-mass galaxy groups

Details On the X-ray emission of the low-mass galaxy groups On the X-ray emission of the low-mass galaxy groups

2002-01-20

arxiv.org/abs/astro-ph/0201332v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, accepted in ApJL

Scientific paper

10.1086/339769

It is shown that the low-mass groups obey the $L_{x}\sim\sigma_v^{4}$ law
deduced for galaxy clusters. The impression of the more shallow slope of the
$L_x-\sigma_{v}$ correlation for groups is created not by enhanced X-ray
emission, but by underestimation of the radial velocity dispersion of some
groups.

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