Bibcode
Gutiérrez, C. M.; López-Corredoira, M.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 571, id.A66, 8 pp.
Fecha de publicación:
11
2014
Revista
Número de citas
28
Número de citas referidas
28
Descripción
Context. Most of the contribution to dust emission in clusters of
galaxies comes from late-type galaxies. However, several ejection
processes of material from these galaxies could introduce dust in the
intracluster media. Even a relatively low abundance of this dust could
act as an efficient cooling agent and have a relevant role in the
evolution of clusters. Aims: We present a study to estimate the
dust content in galaxy clusters. Methods: This was done by using
one the most complete existing catalogues of galaxy clusters based on
Sloan Digital Sky Survey (SDSS) data and following two methods: the
first one compares the colours of samples of galaxies in the background
of clusters with those of galaxies in the field. Using this method, we
have explored clustercentric distances up to 6 Mpc; this covers at least
2 × R200 for all the clusters in the sample. The
galaxies used in this first method were selected from the SDSS-DR9,
among those having reliable photometry and accurate estimation of
photometric redshifts. Using the colours of background galaxies, we
analyzed several regions at galactic latitudes | b | > 20° and
>50°. The results are largely independent of the galactic cut
applied. At | b | > 20°, the sample contains 56 985 clusters in
the redshift range 0.05
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Martín
López Corredoira