Period-luminosity relation of red supergiants Virtual Observatory Resource

Authors
  1. Chatys F.W.
  2. Bedding T.R.
  3. Murphy S.J.
  4. Kiss L.L.
  5. Dobie D.
  6. Grindlay J.E.
  7. Published by
    CDS
Abstract

We revisit the K-band period-luminosity (P-L) relations of Galactic red supergiants using Gaia Data Release 2 parallaxes and up to 70yr of photometry from AAVSO and ASAS campaigns. In addition, we examine 206 LMC red supergiants using 50yr of photometric data from the digitized Harvard Astronomical Plate Collection. We identified periods by computing power spectra and calculated the period-luminosity relations of our samples and compared them with the literature. Newly available data tighten the P-L relations substantially. Identified periods form two groups: one with periods of 300-1000d, corresponding to pulsations, and another with Long Secondary Periods between 1000 and 8000d. Among the 48 Galactic objects we find shorter periods in 25 stars and long secondary periods in 23 stars. In the LMC sample we identify 85 and 94 red supergiants with shorter and long secondary periods, respectively. The P-L relation of the Galactic red supergiants is in agreement with the red supergiants in both, the Large Magellanic Cloud and the Andromeda galaxy. We find no clear continuity between the known red giant period-luminosity sequences, and the red supergiant sequences investigated here.

Keywords
  1. Late-type stars
  2. Supergiant stars
  3. Infrared astronomy
Bibliographic source Bibcode
2019MNRAS.487.4832C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/487/4832
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/487/4832

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/487/4832
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/487/4832
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/487/4832
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/487/4832/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/487/4832/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/487/4832/table2?

History

2023-01-23T12:57:12Z
Resource record created
2023-01-23T12:57:12Z
Created
2023-02-08T05:58:08Z
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