BVR photometry of IZ Mon and AR Dra Virtual Observatory Resource

Authors
  1. Yang Y.-G.
  2. Dai H.-F.
  3. Zhou Z.
  4. Li Q.
  5. Published by
    CDS
Abstract

We present multi-color photometric observations for two neglected near-contact binaries, IZ Mon (P=0.77980^d^) and AR Dra (P=0.67584^d^). By the aid of the updated W-D analysis code, the photometric solutions were deduced from the multi-color light curves (LCs). IZ Mon is a semi-detached binary with a mass ratio of q=0.388(+/-0.002) , while AR Dra is a detached star with a mass ratio of q=0.652(+/-0.002). The asymmetric LCs of IZ Mon were modeled by a hot spot on the secondary's surface, which may be attributed to mass transfer from the primary. Based on all collected eclipse times for two systems, we constructed their timing residual curves. The orbital period for IZ Mon may be continuously decreasing at a rate of dP/dt=-2.06(+/-0.04)days/yr, which may result from mass and angular momentum loss from the central system. For AR Dra, there exists a cyclic variation with a period of P_3_=104.9(+/-2.9)yr due to light-time orbit effect via the presence of the third body, whose mass is more than 0.28(+/-0.02)M_{Sun}_. Finally, two near-contact binaries, IZ Mon and AR Dra, will evolve into contact binaries.

Keywords
  1. eclipsing-binary-stars
  2. infrared-photometry
  3. visible-astronomy
  4. Wide-band photometry
  5. ccd-photometry
Bibliographic source Bibcode
2016AJ....151..124Y
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/151/124
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/151/124
Document Object Identifer DOI
doi:10.26093/cds/vizier.51510124

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/151/124
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/151/124
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/151/124
IVOA Table Access TAP
https://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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/151/124/table6?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/151/124/table6?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/151/124/table6?

History

2016-07-28T17:11:52Z
Resource record created
2016-07-28T17:11:52Z
Created
2017-06-26T11:49:03Z
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