GALEX search for T Tauri in Taurus-Auriga Virtual Observatory Resource

Authors
  1. Gomez de Castro A.I.
  2. Lopez-Santiago J.
  3. Lopez-Martinez F.
  4. Sanchez N.,Sestito P.
  5. de Castro E.
  6. Cornide M.
  7. Gestoso J.Y.
  8. Published by
    CDS
Abstract

In this work, we identify 63 bona fide new candidates to T Tauri stars (TTSs) in the Taurus-Auriga region, using its ultraviolet excess as our baseline. The initial data set was defined from the GALEX all sky survey (AIS). The GALEX satellite obtained images in the near-ultraviolet (NUV) and far-ultraviolet (FUV) bands where TTSs show a prominent excess compared with main-sequence or giants stars. GALEX AIS surveyed the Taurus-Auriga molecular complex, as well as a fraction of the California Nebula and the Perseus complex; bright sources and dark clouds were avoided. The properties of TTSs in the ultraviolet (GALEX), optical (UCAC4), and infrared (2MASS) have been defined using the TTSs observed with the International Ultraviolet Explorer reference sample. The candidates were identified by means of a mixed ultraviolet-optical-infrared excess set of colors; we found that the FUV-NUV versus J-K color-color diagram is ideally suited for this purpose. From an initial sample of 163313 bona fide NUV sources, a final list of 63 new candidates to TTSs in the region was produced. The search procedure has been validated by its ability to detect all known TTSs in the area surveyed: 31 TTSs. Also, we show that the weak-lined TTSs are located in a well-defined stripe in the FUV-NUV versus J-K diagram. Moreover, in this work, we provide a list of TTSs photometric standards for future GALEX-based studies of the young stellar population in star forming regions.

Keywords
  1. young-stellar-objects
  2. ultraviolet-photometry
  3. infrared-photometry
  4. visible-astronomy
  5. photometry
Bibliographic source Bibcode
2015ApJS..216...26G
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/216/26
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/216/26
Document Object Identifer DOI
doi:10.26093/cds/vizier.22160026

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/216/26
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/216/26
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/216/26
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/ApJS/216/26/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/216/26/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/216/26/table2?

History

2015-03-16T12:37:30Z
Resource record created
2015-03-16T12:37:30Z
Created
2020-07-01T11:16:56Z
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