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  Stellar mass–halo mass relation for the brightest central galaxies of X-ray clusters since z ∼ 0.65

Erfanianfar, G., Finoguenov, A., Furnell, K., Popesso, P., Biviano, A., Wuyts, S., et al. (2019). Stellar mass–halo mass relation for the brightest central galaxies of X-ray clusters since z ∼ 0.65. Astronomy and Astrophysics, 631: A175. doi:10.1051/0004-6361/201935375.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-5F33-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-5F34-7
Genre: Journal Article

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 Creators:
Erfanianfar, G.1, Author              
Finoguenov, A.1, Author              
Furnell, K., Author
Popesso, P., Author
Biviano, A., Author
Wuyts, S., Author
Collins, C. A., Author
Mirkazemi, M., Author
Comparat, J.1, Author              
Khosroshahi, H., Author
Nandra, K.1, Author              
Capasso, R., Author
Ryko, E., Author
Wilman, D.2, Author              
Merloni, A.1, Author              
Clerc, N., Author
Salvato, M.1, Author              
Chitham, J. I.1, Author              
Kelvin, L. S., Author
Gozaliasl, G., Author
Weijmans, A., AuthorBrownstein, J., AuthorEgami, E., AuthorPereira, M. J., AuthorSchneider, D. P., AuthorKirkpatrick, C., AuthorDamsted, S., AuthorKukkola, A., Author more..
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 Abstract: We present the brightest cluster galaxies (BCGs) catalog for SPectroscoic IDentification of eROSITA Sources (SPIDERS) DR14 cluster program value-added catalog. We list the 416 BCGs identified as part of this process, along with their stellar mass, star formation rates (SFRs), and morphological properties. We identified the BCGs based on the available spectroscopic data from SPIDERS and photometric data from SDSS. We computed stellar masses and SFRs of the BCGs on the basis of SDSS, WISE, and GALEX photometry using spectral energy distribution fitting. Morphological properties for all BCGs were derived by Sersic profile fitting using the software package SIGMA in different optical bands (g,r,i). We combined this catalog with the BCGs of galaxy groups and clusters extracted from the deeper AEGIS, CDFS, COSMOS, XMM-CFHTLS, and XMM-XXL surveys to study the stellar mass–halo mass relation using the largest sample of X-ray groups and clusters known to date. This result suggests that the mass growth of the central galaxy is controlled by the hierarchical mass growth of the host halo. We find a strong correlation between the stellar mass of BCGs and the mass of their host halos. This relation shows no evolution since z ∼ 0.65. We measure a mean scatter of 0.21 and 0.25 for the stellar mass of BCGs in a given halo mass at low (0.1 <  z <  0.3) and high (0.3 <  z <  0.65) redshifts, respectively. We further demonstrate that the BCG mass is covariant with the richness of the host halos in the very X-ray luminous systems. We also find evidence that part of the scatter between X-ray luminosity and richness can be reduced by considering stellar mass as an additional variable.

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 Dates: 2019-07-12
 Publication Status: Published online
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1051/0004-6361/201935375
Other: LOCALID: 3182818
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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 631 Sequence Number: A175 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1