Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795
All rights reserved.. The nearby cluster Abell 1795 is used as a testbed to examine whether hot gas in cluster galaxies is stripped by the ram pressure of the intracluster medium (ICM). The expected X-ray emission in and around Abell 1795 galaxies is likely dominated by the ICM, low-mass X-ray binar...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Astronomical Society
2020
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| Online Access: | https://hdl.handle.net/1721.1/125005 |
| _version_ | 1811093843831947264 |
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| author | Wagner, Cory R. McDonald, Michael A. Courteau, Stéphane |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Wagner, Cory R. McDonald, Michael A. Courteau, Stéphane |
| author_sort | Wagner, Cory R. |
| collection | MIT |
| description | All rights reserved.. The nearby cluster Abell 1795 is used as a testbed to examine whether hot gas in cluster galaxies is stripped by the ram pressure of the intracluster medium (ICM). The expected X-ray emission in and around Abell 1795 galaxies is likely dominated by the ICM, low-mass X-ray binaries, active galactic nuclei, and hot gas halos. In order to constrain these components, we use archival Chandra X-ray Observatory and Sloan Digital Sky Survey observations of Abell 1795 and identify 58 massive (M ∗ > 1010 M o) spectroscopic cluster members within 5′ of the Chandra optical axis. X-ray images at 0.5-1.5 and 4-8 keV were created for each cluster member and then stacked into two clustercentric radius bins: inner (0.25 < R clust/R 500 < 1) and outer (1 < R clust/R 500 < 2.5). Surface brightness profiles of inner and outer cluster members are fit using Markov chain Monte Carlo sampling in order to generate model parameters and measure the 0.5-1.5 keV luminosities of each model component. Leveraging effective total Chandra exposure times of 3.4 and 1.7 Ms for inner and outer cluster members, respectively, we report the detection of hot gas halos, in a statistical sense, around outer cluster members. Outer members have 0.5-1.5 keV hot halo luminosities () that are six times larger than the upper limit for inner cluster members (L X < 1.3 × 1039 erg s-1). This result suggests that the ICM is removing hot gas from the halos of Abell 1795 members as they fall into the cluster. ©2018. The American Astronomical Society. |
| first_indexed | 2024-09-23T15:51:35Z |
| format | Article |
| id | mit-1721.1/125005 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:51:35Z |
| publishDate | 2020 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | mit-1721.1/1250052022-09-29T16:37:25Z Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 Wagner, Cory R. McDonald, Michael A. Courteau, Stéphane Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research All rights reserved.. The nearby cluster Abell 1795 is used as a testbed to examine whether hot gas in cluster galaxies is stripped by the ram pressure of the intracluster medium (ICM). The expected X-ray emission in and around Abell 1795 galaxies is likely dominated by the ICM, low-mass X-ray binaries, active galactic nuclei, and hot gas halos. In order to constrain these components, we use archival Chandra X-ray Observatory and Sloan Digital Sky Survey observations of Abell 1795 and identify 58 massive (M ∗ > 1010 M o) spectroscopic cluster members within 5′ of the Chandra optical axis. X-ray images at 0.5-1.5 and 4-8 keV were created for each cluster member and then stacked into two clustercentric radius bins: inner (0.25 < R clust/R 500 < 1) and outer (1 < R clust/R 500 < 2.5). Surface brightness profiles of inner and outer cluster members are fit using Markov chain Monte Carlo sampling in order to generate model parameters and measure the 0.5-1.5 keV luminosities of each model component. Leveraging effective total Chandra exposure times of 3.4 and 1.7 Ms for inner and outer cluster members, respectively, we report the detection of hot gas halos, in a statistical sense, around outer cluster members. Outer members have 0.5-1.5 keV hot halo luminosities () that are six times larger than the upper limit for inner cluster members (L X < 1.3 × 1039 erg s-1). This result suggests that the ICM is removing hot gas from the halos of Abell 1795 members as they fall into the cluster. ©2018. The American Astronomical Society. 2020-05-05T14:34:08Z 2020-05-05T14:34:08Z 2018-10 2017-11 2019-04-26T18:49:07Z Article http://purl.org/eprint/type/JournalArticle 1538-4357 https://hdl.handle.net/1721.1/125005 Wagner, Cory R. et. al. "Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795." Astrophysical Journal 867, 1 (October 2018): no.14 doi. 10.3847/1538-4357/AAE37C ©2018 Authors en 10.3847/1538-4357/AAE37C Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Astronomical Society The Astrophysical Journal |
| spellingShingle | Wagner, Cory R. McDonald, Michael A. Courteau, Stéphane Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 |
| title | Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 |
| title_full | Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 |
| title_fullStr | Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 |
| title_full_unstemmed | Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 |
| title_short | Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795 |
| title_sort | stripping of the hot gas halos in member galaxies of abell 1795 |
| url | https://hdl.handle.net/1721.1/125005 |
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