X-ray observations of HCG galaxies Virtual Observatory Resource

Authors
  1. Tzanavaris P.
  2. Hornschemeier A.E.
  3. Gallagher S.C.
  4. Lenkic L.,Desjardins T.D.
  5. Walker L.M.
  6. Johnson K.E.
  7. Mulchaey J.S.
  8. Published by
    CDS
Abstract

We obtain total galaxy X-ray luminosities, L_X_, originating from individually detected point sources in a sample of 47 galaxies in 15 compact groups of galaxies (CGs). For the great majority of our galaxies, we find that the detected point sources most likely are local to their associated galaxy, and are thus extragalactic X-ray binaries (XRBs) or nuclear active galactic nuclei (AGNs). For spiral and irregular galaxies, we find that, after accounting for AGNs and nuclear sources, most CG galaxies are either within the +/-1{sigma} scatter of the Mineo et al. L_X_-star formation rate (SFR) correlation or have higher L_X_ than predicted by this correlation for their SFR. We discuss how these "excesses" may be due to low metallicities and high interaction levels. For elliptical and S0 galaxies, after accounting for AGNs and nuclear sources, most CG galaxies are consistent with the Boroson et al. L_X_-stellar mass correlation for low-mass XRBs, with larger scatter, likely due to residual effects such as AGN activity or hot gas. Assuming non-nuclear sources are low- or high-mass XRBs, we use appropriate XRB luminosity functions to estimate the probability that stochastic effects can lead to such extreme L_X_ values. We find that, although stochastic effects do not in general appear to be important, for some galaxies there is a significant probability that high L_X_ values can be observed due to strong XRB variability.

Keywords
  1. galaxies
  2. catalogs
  3. x-ray-sources
  4. galaxy-classification-systems
  5. x-ray-binary-stars
Bibliographic source Bibcode
2016ApJ...817...95T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/817/95
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/817/95
Document Object Identifer DOI
doi:10.26093/cds/vizier.18170095

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/817/95
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/817/95
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/817/95
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/817/95/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/817/95/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/817/95/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/817/95/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/817/95/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/817/95/table3?

History

2016-04-29T15:20:39Z
Resource record created
2016-04-29T15:20:39Z
Created
2017-10-09T13:34:03Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr