Projects per year
Abstract
We present the results of work involving a statistically complete sample of 34 galaxy clusters, in the redshift range 0.15$\le$z$\le$0.3 observed with $Chandra$. We investigate the luminosity-mass ($LM$) relation for the cluster sample, with the masses obtained via a full hydrostatic mass analysis. We utilise a method to fully account for selection biases when modeling the $LM$ relation, and find that the $LM$ relation is significantly different than the relation modelled when not account for selection effects. We find that the luminosity of our clusters is 2.2$\pm$0.4 times higher (when accounting for selection effects) than the average for a given mass, its mass is 30% lower than the population average for a given luminosity. Equivalently, using the $LM$ relation measured from this sample without correcting for selection biases would lead to the underestimation by 40% of the average mass of a cluster with a given luminosity. Comparing the hydrostatic masses to mass estimates determined from the $Y_{X}$ parameter, we find that they are entirely consistent, irrespective of the dynamical state of the cluster.
Original language | English |
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Pages (from-to) | 858-884 |
Number of pages | 27 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 465 |
Issue number | 1 |
Early online date | 13 Oct 2016 |
DOIs | |
Publication status | Published - 11 Feb 2017 |
Keywords
- galaxies: clusters: general
- X-rays: galaxies: clusters
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Dive into the research topics of 'Chandra Measurements of a Complete Sample of X-ray Luminous Galaxy Clusters: The Luminosity-Mass Relation'. Together they form a unique fingerprint.Projects
- 2 Finished
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Research in planetary formation, astrophysics, and cosmology at Bristol
1/04/15 → 31/03/18
Project: Research
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Research in planetary physics, astrophysics and cosmology at Bristol
1/04/12 → 1/04/15
Project: Research