Observation of six NSVS eclipsing binaries Virtual Observatory Resource

Authors
  1. Dimitrov D.P.
  2. Kjurkchieva D.P.
  3. Published by
    CDS
Abstract

We carried out photometric and low-resolution spectral observations of six eclipsing ultrashort-period binaries with main-sequence (MS)components. The light-curve solutions of the Rozhen observations show that all targets are overcontact systems. We found a well-defined empirical relation between period and semi-major axis for the short-period binaries and used it for estimation of the global parameters of the targets. Our results revealed that NSVS 925605 is quite an interesting target: (i) it is one of a few contact binaries with M components; (ii) it exhibits high activity (emission in the H{alpha} line, X-ray emission, large cool spots, non-Planck energy distribution); (iii) its components differ in temperature by 700 K. All the appearances of high magnetic activity and the huge fill-out factor (0.7) of NSVS 925605 may be a precursor of the predicted merging of close magnetic binaries. Another unusual binary is NSVS 2700153, which reveals considerable long-term variability.

Keywords
  1. multiple-stars
  2. eclipsing-binary-stars
  3. infrared-photometry
  4. visible-astronomy
  5. photometry
  6. two-color-diagrams
Bibliographic source Bibcode
2015MNRAS.448.2890D
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/448/2890
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/448/2890
Document Object Identifer DOI
doi:10.26093/cds/vizier.74482890

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/448/2890
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/448/2890
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/448/2890
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/448/2890/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/448/2890/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/448/2890/table1?

History

2017-12-05T06:38:46Z
Resource record created
2017-12-05T06:38:46Z
Created
2024-08-14T20:20:24Z
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