Effects of selection and covariance on X-ray scaling relations of galaxy clusters
dc.contributor.author | Nord, Brian D. | en_US |
dc.contributor.author | Stanek, R. M. (Rebecca M.) | en_US |
dc.contributor.author | Rasia, E. | en_US |
dc.contributor.author | Evrard, August E. | en_US |
dc.date.accessioned | 2008-08-14T19:12:14Z | |
dc.date.available | 2008-08-14T19:12:14Z | |
dc.date.issued | 2008-01-01 | en_US |
dc.identifier.citation | Nord, B; Stanek, R; Rasia, E; Evrard, AE. (2008). Monthly Notices of the Royal Astronomical Society, 383:(1) L10-L14. <http://hdl.handle.net/2027.42/60611> | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://arxiv.org/abs/0706.2189 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/60611 | |
dc.description.abstract | We explore how the behaviour of galaxy cluster scaling relations are affected by flux-limited selection biases and intrinsic covariance among observable properties. Our models presume log-normal covariance between luminosity (L) and temperature (T) at fixed mass (M), centred on evolving, power-law mean relations as a function of host halo mass. Selection can mimic evolution; the L-M and L-T relations from shallow X-ray flux-limited samples will deviate from mass-limited expectations at nearly all scales while the relations from deep surveys (10(-14) erg s(-1) cm(-2)) become complete, and therefore unbiased, at masses above similar to 2 x 10(14) h(-1) M-circle dot. We derive expressions for low-order moments of the luminosity distribution at fixed temperature, and show that the slope and scatter of the L-T relation observed in flux-limited samples is sensitive to the assumed L-T correlation coefficient. In addition, L-T covariance affects the redshift behaviour of halo counts and mean luminosity in a manner that is nearly degenerate with intrinsic population evolution. | en_US |
dc.format.extent | 288688 bytes | |
dc.format.extent | 18 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Blackwell Publishing | en_US |
dc.subject | Galaxies | en_US |
dc.subject | Clusters | en_US |
dc.subject | General | en_US |
dc.subject | X-rays : Galaxies | en_US |
dc.subject | Clusters | en_US |
dc.title | Effects of selection and covariance on X-ray scaling relations of galaxy clusters | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA | en_US |
dc.contributor.affiliationum | Univ Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/60611/1/Nord2007Effects.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1111/j.1745-3933.2007.00407.x | en_US |
dc.owningcollname | Astrophysics (Physics, Department of) |
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