MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Stripping of the Hot Gas Halos in Member Galaxies of Abell 1795

Author(s)
Wagner, Cory R.; McDonald, Michael A.; Courteau, Stéphane
Thumbnail
DownloadWagner_2018_ApJ_867_14.pdf (1.295Mb)
Publisher Policy

Publisher Policy

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.

Terms of use
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.
Metadata
Show full item record
Abstract
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.
Date issued
2018-10
URI
https://hdl.handle.net/1721.1/125005
Department
Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space Research
Journal
Astrophysical Journal
Publisher
American Astronomical Society
Citation
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
Version: Final published version
ISSN
1538-4357

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.