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Title: | Richness-based masses of rich and famous galaxy clusters | Authors: | ANDREON, Stefano | Issue Date: | 2016 | Journal: | ASTRONOMY & ASTROPHYSICS | Number: | 587 | First Page: | A158 | Abstract: | We present a catalog of galaxy cluster masses derived by exploiting the tight correlation between mass and richness, I.e., a properly computed number of bright cluster galaxies. The richness definition adopted in this work is properly calibrated, shows a small scatter with mass, and has a known evolution, which means that we can estimate accurate (0.16 dex) masses more precisely than by adopting any other richness estimates or X-ray or SZ-based proxies based on survey data. We measured a few hundred galaxy clusters at 0.05 < z < 0.22 in the low-extinction part of the Sloan Digital Sky Survey footprint that are in the 2015 catalog of Planck-detected clusters, that have a known X-ray emission, that are in the Abell catalog, or that are among the most most cited in the literature. Diagnostic plots and direct images of clusters are individually inspected and we improved cluster centers and, when needed, we revised redshifts. Whenever possible, we also checked for indications of contamination from other clusters on the line of sight, and found ten such cases. All this information, with the derived cluster mass values, are included in the distributed value-added cluster catalog of the 275 clusters with a derived mass larger than 10<SUP>14</SUP>M<SUB>☉</SUB>. Finally, in a technical appendix we illustrate with Planck clusters how to minimize the sensitivity of comparisons between masses listed in different catalogs to the specific overlapping of the considerd subsamples, a problem recognized but not solved in the literature. <P />Full Table 1 is available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/587/A158">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/587/A158</A>A web front-end is available at the URL <A href="http://www.brera.mi.astro.it/~andreon/famous.html">http://www.brera.mi.astro.it/~andreon/famous.html | URI: | http://hdl.handle.net/20.500.12386/24659 | URL: | https://www.aanda.org/articles/aa/abs/2016/03/aa26852-15/aa26852-15.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201526852 | Bibcode ADS: | 2016A&A...587A.158A | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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A16_famous.pdf | PDF editoriale | 396.41 kB | Adobe PDF | View/Open |
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