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Probing the dynamical state, baryon content, and multiphase nature of galaxy clusters with bright background QSOs
Ge, Chong1,2,3,4; Wang, Q. Daniel5; Burchett, Joseph N.5; Tripp, Todd M.5; Sun, Ming4; Li, Zhiyuan3,6,7; Gu, Qiusheng3,6,7; Ji, Li1,2
2018-12-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume481Issue:3Pages:4111-4122
Abstract

We have initiated a programme to study the physical/dynamical state of gas in galaxy clusters and the impact of the cluster environment on gaseous haloes of individual galaxies using X-ray imaging and UV absorption line spectroscopy of background QSOs. Here, we report results from the analysis Chandra and XMM-Newton archival data of five galaxy clusters with such QSOs, one of which has an archival UV spectrum. We characterize the gravitational masses and dynamical states, as well as the hot intracluster medium (ICM) properties of these clusters. Most clusters are dynamically disturbed clusters based on the X-ray morphology parameters, the X-ray temperature profiles, the large offset between X-ray peak, and brightest cluster galaxy (BCG). The baryon contents in the hot ICM and stars of these clusters within r(500) are lower than the values expected from the gravitational masses, according to the standard cosmology. We also estimate column densities of the hot ICM along the sightlines towards the background QSOs as well as place upper limits on the warm-hot phase for the one sightline with existing UV observations. These column densities, compared with those of the warm and warm-hot ICM to be measured with UV absorption line spectroscopy, will enable us to probe the relationship among various gaseous phases and their connection to the heating/cooling and dynamical processes of the clusters. Furthermore, our analysis of the archival QSO spectrum probing one cluster underscores the need for high-quality, targeted UV observations to robustly constrain the 10(5-6) K gas phase.

Keywordgalaxies: clusters: general galaxies: clusters: intracluster medium X-rays: galaxies: clusters quasars: absorption lines
DOI10.1093/mnras/sty2492
WOS KeywordX-RAY ; XMM-NEWTON ; INTRACLUSTER MEDIUM ; GAS ; REDSHIFT ; SAMPLE ; SKY ; TEMPERATURE ; CALIBRATION ; ABSORPTION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000450984100089
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/20710
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Q. Daniel
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, PMO, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China
4.Univ Alabama, Dept Phys & Astron, Huntsville, AL 35899 USA
5.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA
6.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
7.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Ge, Chong,Wang, Q. Daniel,Burchett, Joseph N.,et al. Probing the dynamical state, baryon content, and multiphase nature of galaxy clusters with bright background QSOs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,481(3):4111-4122.
APA Ge, Chong.,Wang, Q. Daniel.,Burchett, Joseph N..,Tripp, Todd M..,Sun, Ming.,...&Ji, Li.(2018).Probing the dynamical state, baryon content, and multiphase nature of galaxy clusters with bright background QSOs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,481(3),4111-4122.
MLA Ge, Chong,et al."Probing the dynamical state, baryon content, and multiphase nature of galaxy clusters with bright background QSOs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 481.3(2018):4111-4122.
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