Study of an eclipsing binary in M31 Virtual Observatory Resource

Authors
  1. Vilardell F.
  2. Ribas I.
  3. Jordi C.
  4. Fitzpatrick E.L.
  5. Guinan E.F.
  6. Published by
    CDS
Abstract

The cosmic distance scale largely depends on distance determinations to galaxies of the Local Group. In this sense, the Andromeda galaxy (M31) is a key rung to better constrain the cosmic distance ladder. A project was started in 1999 to firmly establish a direct and accurate distance to M31 using eclipsing binaries (EBs). After the determination of the first direct distance to M31 from EBs, the second direct distance to an EB system is presented: M31V J00443610+4129194. Light and radial velocity curves were obtained and fitted to derive the masses and radii of the components. The acquired spectra were combined and disentangled to determine the temperature of the components. The analysis of the studied EB resulted in a distance determination to M31 of (m-M)0=24.30+/-0.11mag. This result, when combined with the previous distance determination to M31, results in a distance modulus of (m-M)0=24.36+/-0.08mag (744+/-33kpc), fully compatible with other distance determinations to M31. With an error of only project.

Keywords
  1. galaxies
  2. eclipsing-binary-stars
  3. radial-velocity
Bibliographic source Bibcode
2010A&A...509A..70V
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/509/A70
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/509/A70
Document Object Identifer DOI
doi:10.26093/cds/vizier.35090070

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/509/A70
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/509/A70
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/509/A70
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2010-03-29T07:57:29Z
Resource record created
2010-03-29T07:57:29Z
Created
2017-06-28T06:58:27Z
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