Tycho-2 red giant branch and carbon stars Virtual Observatory Resource

Authors
  1. Gontcharov G.A.
  2. Published by
    CDS
Abstract

Based on multicolor photometry from the 2MASS and Tycho-2 catalogues, we have produced a sample of 38368 branch red giants that has less than 1% of admixtures and is complete within 500 pc of the Sun. The sample includes 30671 K giants, 7544 M giants,49 C giants, and 104 suspected supergiants or S stars. The photometric distances have been calculated for K, M, and C stars with an accuracy of 40% together with reddening and extinction estimates. Tycho-2 proper motions and PCRV radial velocities are used to analyze the stellar kinematics. The majority of the selected K and M giants are disk stars with ages of more than 3Gyr. A small number of K and M giants are extremely young or, conversely, thick-disk ones. The spatial distribution and kinematics of the selected C stars force us to consider them as asymptotic branch giants with masses of more than 2 solar masses and ages of less than 2Gyr probably associated with the Gould Belt. The offset of the Sun above the Galactic equator has been found from the distribution of stars to be 13+/-2pc, which coincides with the previously obtained value for the clump red giants.

Keywords
  1. Proper motions
  2. Stellar distance
  3. Giant stars
Bibliographic source Bibcode
2011PAZh...37..769G
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/PAZh/37/769
IVOA Identifier IVOID
ivo://CDS.VizieR/J/PAZh/37/769

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PAZh/37/769
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PAZh/37/769
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PAZh/37/769
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/PAZh/37/769/table?
https://vizier.iucaa.in/viz-bin/conesearch/J/PAZh/37/769/table?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PAZh/37/769/table?

History

2017-06-12T15:10:16Z
Resource record created
2017-06-12T14:12:39Z
Updated
2017-06-12T15:10:16Z
Created

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