NY Virginis primary mid-eclipse times Virtual Observatory Resource

Authors
  1. Song S.
  2. Mai X.
  3. Mutel R.L.
  4. Pulley D.
  5. Faillace G.
  6. Watkins A.
  7. Published by
    CDS
Abstract

We report 18 new primary minima timing observations of the short-period eclipsing binary system NY Virginis. We combined these minima with previously published primary minima to update circumbinary exoplanet models in this system based on O-C timing variations. We performed a nonlinear least-squares minimization search using a quadratic ephemeris and either one or two exoplanets. The only model with an acceptable fit includes a period derivative P=2.83x10^-12^ and two planets in eccentric orbits e=0.15, 0.15 with minimum masses of 2.7 and 5.5 Jovian masses. Analysis of the orbit stability shows that this solution is stable for at least 10^8^ years, but a small increase in eccentricity (e>=0.20) for either planet renders the orbits unstable in less than 10^6^ years. A number of model parameters are significantly degenerate, so additional observations are required to determine planetary parameters with high statistical confidence.

Keywords
  1. eclipsing-binary-stars
  2. subdwarf-stars
Bibliographic source Bibcode
2019AJ....157..184S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/157/184
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/157/184
Document Object Identifer DOI
doi:10.26093/cds/vizier.51570184

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/157/184
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/157/184
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/157/184
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2019-08-06T12:29:33Z
Resource record created
2019-08-06T12:29:33Z
Created
2019-11-22T13:51:54Z
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