2MASS red supergiants in the SMC Virtual Observatory Resource

Authors
  1. Massey P.
  2. Neugent K.F.
  3. Dorn-Wallenstein T.Z.
  4. Eldridge J.J.,Stanway E.R.
  5. Levesque E.M.
  6. Published by
    CDS
Abstract

Despite the many successes that modern massive star evolutionary theory has enjoyed, reproducing the apparent trend in the relative number of red supergiants (RSGs) and Wolf-Rayet (WR) stars has remained elusive. Previous estimates show the RSG/WR ratio decreasing strongly with increasing metallicity. However, the evolutionary models have always predicted a relatively flat distribution for the RSG/WR ratio. In this paper we reexamine this issue, drawing on recent surveys for RSGs and WRs in the Magellanic Clouds, M31, and M33. The RSG surveys have used Gaia astrometry to eliminate foreground contamination and have separated RSGs from asymptotic giant branch stars using near-infrared colors. The surveys for WRs have utilized interference-filter imaging, photometry, and image subtraction techniques to identify candidates, which have then been confirmed spectroscopically. After carefully matching the observational criteria to the models, we now find good agreement in both the single-star Geneva and binary BPASS models with the new observations. The agreement is better when we shift the RSG effective temperatures derived from J-Ks photometry downwards by 200K in order to agree with the Levesque TiO effective temperature scale. In an appendix we also present a source list of RSGs for the SMC which includes effective temperatures and luminosities derived from near-infrared 2MASS photometry, in the same manner as used for the other galaxies.

Keywords
  1. giant-stars
  2. infrared-photometry
  3. stellar-spectral-types
  4. effective-temperature
  5. magellanic-clouds
  6. visible-astronomy
Bibliographic source Bibcode
2021ApJ...922..177M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/922/177
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/922/177
Document Object Identifer DOI
doi:10.26093/cds/vizier.19220177

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/922/177
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/922/177
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/922/177
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/ApJ/922/177/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/922/177/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/922/177/table5?

History

2023-05-02T13:11:56Z
Resource record created
2023-05-02T13:11:56Z
Created
2023-08-25T12:37:06Z
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