BVI photometry in M55 (NGC 6809) Virtual Observatory Resource

Authors

1. Vargas Alvarez C.A.
2. Sandquist E.L.

Published by

CDS

Abstract

We have compiled the asymptotic giant, horizontal, and upper red giant branch (AGB, HB, and RGB) stars in the globular cluster M55 (NGC 6809). Using the star counts and the R-parameter we compute the initial helium abundance Y=0.274+/-0.016.

Keywords

1. globular-star-clusters
2. infrared-photometry
3. visible-astronomy
4. Wide-band photometry

Bibliographic source Bibcode

2007AJ....134..825V

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/134/825

IVOA Identifier IVOID

ivo://CDS.VizieR/J/AJ/134/825

Document Object Identifer DOI

doi:10.26093/cds/vizier.51340825

Access

Web browser access HTML

http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/134/825
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/134/825
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/134/825

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/AJ/134/825/stars?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/134/825/stars?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/134/825/stars?