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Galaxy evolution in Hickson compact groups: the role of ram-pressure stripping and strangulation

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dc.contributor.authorRasmussen, J
dc.contributor.authorPonman, TJ
dc.contributor.authorVerdes-Montenegro, L
dc.contributor.authorYun, Min
dc.contributor.authorBorthakur, S
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.date2023-09-23T03:42:45.000
dc.date.accessioned2024-04-26T08:26:06Z
dc.date.available2024-04-26T08:26:06Z
dc.date.issued2008-01-01
dc.description<p>This is the pre-published version harvested from ArXiv. The published version is located at <a href="http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2008.13451.x/abstract">http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2008.13451.x/abstract</a></p>
dc.description.abstractGalaxies in compact groups tend to be deficient in neutral hydrogen compared to isolated galaxies of similar optical properties. In order to investigate the role played by a hot intragroup medium (IGM) for the removal and destruction of H i in these systems, we have performed a Chandra and XMM–Newton study of eight of the most H i deficient Hickson compact groups. Diffuse X-ray emission associated with an IGM is detected in four of the groups, suggesting that galaxy–IGM interactions are not the dominant mechanism driving cold gas out of the group members. No clear evidence is seen for any of the members being currently stripped of any hot gas, nor for galaxies to show enhanced nuclear X-ray activity in the X-ray bright or most H i deficient groups. Combining the inferred IGM distributions with analytical models of representative disc galaxies orbiting within each group, we estimate the H i mass-loss due to ram-pressure and viscous stripping. While these processes are generally insufficient to explain observed H i deficiencies, they could still be important for H i removal in the X-ray bright groups, potentially removing more than half of the interstellar medium in the X-ray bright HCG 97. Ram pressure may also have facilitated strangulation through the removal of galactic coronal gas. In X-ray undetected groups, tidal interactions could be playing a prominent role, but it remains an open question whether they can fully account for the observed H i deficiencies.
dc.description.pages1245-1264
dc.identifier.doihttps://doi.org/10.1111/j.1365-2966.2008.13451.x
dc.identifier.urihttps://hdl.handle.net/20.500.14394/2764
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=2116&amp;context=astro_faculty_pubs&amp;unstamped=1
dc.source.issue3
dc.source.issue388
dc.source.statuspublished
dc.subject* galaxies: evolution; * galaxies: interactions; * galaxies: ISM; * X-rays: galaxies; * X-rays: galaxies: clusters
dc.subjectAstrophysics and Astronomy
dc.titleGalaxy evolution in Hickson compact groups: the role of ram-pressure stripping and strangulation
dc.typearticle
dc.typearticle
digcom.contributor.authorRasmussen, J
digcom.contributor.authorPonman, TJ
digcom.contributor.authorVerdes-Montenegro, L
digcom.contributor.authorisAuthorOfPublication|email:myun@astro.umass.edu|institution:University of Massachusetts - Amherst|Yun, Min
digcom.contributor.authorBorthakur, S
digcom.identifierastro_faculty_pubs/1139
digcom.identifier.contextkey1959888
digcom.identifier.submissionpathastro_faculty_pubs/1139
dspace.entity.typePublication
relation.isAuthorOfPublication36d012cf-6d65-42c1-91b8-fbec638580d7
relation.isAuthorOfPublication.latestForDiscovery36d012cf-6d65-42c1-91b8-fbec638580d7
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