| Issue |
A&A
Volume 416, Number 2, March III 2004
|
|
|---|---|---|
| Page(s) | 441 - 446 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20031725 | |
| Published online | 27 February 2004 | |
On the L
relation of groups of galaxies
1
Institute of Astronomy & Astrophysics, National Observatory of Athens, I. Metaxa & B. Pavlou, P. Penteli 152 36, Athens, Greece e-mail: mplionis@astro.noa.gr
2
Instituto Nacional de Astrofísica Óptica y Electrónica, AP 51 y 216, 72000, Puebla, Pue, México
Corresponding author: H. M. Tovmassian, hrant@inaoep.mx
Received:
9
April
2003
Accepted:
6
November
2003
We analyse the 
relation for the new Mulchaey et al.
group Atlas. We find that once we take into account the possible
statistical bias introduced by the cutoff in luminosity, we recover a
relation that is consistent with that of clusters, i.e.,
. The larger scatter of this relation for
groups of galaxies could be attributed to an orientation effect,
due to which the radial velocity
dispersion of groups oriented close to orthogonal to the line of
sight, would be underestimated. This effect could also contribute
to flattening the slope of the group
relation.
Key words: galaxies: clusters: general / X-rays: galaxies
© ESO, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.