XMM view of NGC 6231: OB stars Virtual Observatory Resource

Authors
  1. Sana H.
  2. Rauw G.
  3. Naze N.
  4. Gosset E.
  5. Vreux J.-M.
  6. Published by
    CDS
Abstract

In this second paper of the series, we focus on the X-ray properties of the OB star population of NGC 6231. As a tool for our analysis, we performed a literature-based census of the OB stars in the field of view. More than one hundred objects are found, among which 30% can be associated with an X-ray source. All the O-type stars are detected in the X-ray domain as soft and reasonably strong emitters. [...] Among B-type stars, the detection rate is only about 25% in the sub-type range B0-B4 and remains mostly uniform throughout the different sub-populations while it drops significantly at later sub-types. The associated X-ray spectra are harder than those of O-type stars. Our analysis points towards the emission being rather associated with a physical (in a multiple system) PMS companion. However, we still observe a correlation between the bolometric luminosity of the B stars and the measured X-ray luminosity. [...]

Keywords
  1. Open star clusters
  2. Astronomical object identification
  3. Infrared photometry
  4. Optical astronomy
  5. Wide-band photometry
  6. OB stars
  7. Pre-main sequence stars
  8. X-ray sources
Bibliographic source Bibcode
2006MNRAS.372..661S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/372/661
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/372/661

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/372/661
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/372/661
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/372/661
IVOA Table Access TAP
http://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).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/372/661/obcensus?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/372/661/obcensus?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/372/661/obcensus?

History

2007-03-18T16:08:37Z
Resource record created
2007-03-18T16:08:37Z
Created
2018-08-21T09:55:46Z
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