SIMBAD references

2013ApJ...778..124Z - Astrophys. J., 778, 124 (2013/December-1)

A good mass proxy for galaxy clusters with XMM-Newton.

ZHAO H.-H., JIA S.-M., CHEN Y., LI C.-K., SONG L.-M. and XIE F.

Abstract (from CDS):

We use a sample of 39 galaxy clusters at redshift z < 0.1 observed by XMM-Newton to investigate the relations between X-ray observables and total mass. Based on central cooling time and central temperature drop, the clusters in this sample are divided into two groups: 25 cool core clusters and 14 non-cool core clusters, respectively. We study the scaling relations of L bol-M500, M500-T, M500-Mg, and M500-YX, and also the influences of cool core on these relations. The results show that the M500-Y X relation has a slope close to the standard self-similar value, has the smallest scatter and does not vary with the cluster sample. Moreover, the M500-YX relation is not affected by the cool core. Thus, the parameter of YX may be the best mass indicator.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - intergalactic medium - X-rays: galaxies: clusters

Simbad objects: 52

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