X-ray and IR emission from YSOs Virtual Observatory Resource

Authors
  1. Wolk S.J.
  2. Winston E.
  3. Bourke T.L.
  4. Gutermuth R.
  5. Megeath S.T.,Spitzbart B.D.
  6. Osten R.
  7. Published by
    CDS
Abstract

We report on a multiwavelength study of a partially embedded region of star formation centered on the Herbig Be star LkH{alpha} 101. Using two 40ks Chandra observations, we detect 213 X-ray sources in the ~17'x17' ACIS-I field. We combine the X-ray data with Two Micron All Sky Survey near-IR observations and Spitzer IRAC and MIPS 24um observations to obtain a complete picture of the cluster. A total of 158 of the X-ray sources have infrared counterparts. Of these, we find nine protostars, 48 Class II objects, five transition objects, and 72 Class III objects. From the Spitzer data we identify an additional 10 protostars, 53 Class II objects, and four transition disk candidates which are not detected by Chandra. We obtained optical spectra of a sample of both X-ray-detected and non-X-ray-detected objects. Combining the X-ray, Spitzer, and spectral data, we obtain independent estimates of cluster distance and the total cluster size -excluding protostars. We obtain consistent distance estimates of 510^+100^_-40_pc and a total cluster size of 255^+50^_-25_ stars. We find the Class II:III ratio is about 5:7 with some evidence that the Class III sources are spatially more dispersed. The cluster appears very young with three sites of active star formation and a median age of about 1Myr.

Keywords
  1. x-ray-sources
  2. pre-main-sequence-stars
  3. young-stellar-objects
  4. infrared-photometry
  5. stellar-spectral-types
  6. line-intensities
Bibliographic source Bibcode
2010ApJ...715..671W
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/715/671
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/715/671
Document Object Identifer DOI
doi:10.26093/cds/vizier.17150671

Access

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/715/671
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https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/715/671/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/715/671/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/715/671/notXray?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/715/671/notXray?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/715/671/notXray?

History

2012-06-14T16:05:25Z
Resource record created
2012-06-14T16:05:25Z
Created
2017-06-26T11:50:00Z
Updated

Contact

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