V1044 Her VR differential photometry Virtual Observatory Resource

Authors
  1. Lu H.
  2. Zhang L.
  3. Han X.L.
  4. Pi Q.
  5. Wang D.
  6. Published by
    CDS
Abstract

We present new CCD photometric observations of V1044 Her obtained on May 22, 23 and 24, 2015. From our data, we derived five new light curve minimum times. Combining our new results with previously available CCD light minimum times, we derived an updated ephemeris and discovered that the period of this binary system exhibits an oscillation. The cyclic variation may be caused by the light-time effect via the presence of a third body or magnetic activity cycle. We calculated the corresponding period of the third body to be 14.1+/-1.4 years or magnetic cycle to be 12.2+/-0.7 years. We analyzed our new asymmetric light curves to obtain photometric solutions and starspot parameters using the Wilson and Devinney program. The final results show that V1044 Her is a contact binary system with a degree of contact factor f=3.220(+/-0.002)%.

Keywords
  1. eclipsing-binary-stars
  2. infrared-photometry
  3. visible-astronomy
  4. photometry
  5. ccd-photometry
Bibliographic source Bibcode
2016NewA...48...58L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NewA/48.58
IVOA Identifier IVOID
ivo://CDS.VizieR/J/other/NewA/48.58

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NewA/48.58
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NewA/48.58
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NewA/48.58
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2017-01-03T14:07:50Z
Resource record created
2017-01-03T14:07:50Z
Created
2017-06-22T14:29:08Z
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