Research Article
Year 2021,
Volume: 23 Issue: 1, 30 - 38, 29.01.2021
Abstract
In this study, we investigated light curve analysis of contact binary system NO Vul. Also, we investigated orbital period variations of contact binaries NO Vul based on all published minima times and also those obtained from our own observations. Photometric observations are obtained from the ASAS public archive. Physical parameters of the system are derived using the modeling code by Wilson and Dewinney’s (WD). Photometric results indicate that NO Vul is q = 0.72(2) and about f =%19 respectively and the derived orbital inclination i =77(1).
Thanks
The authors thank for the support of the Astrophysics Research Centre and Observatory of Çanakkale Onsekiz Mart University. This research has made use of the APASS database, located at the AAVSO web site. Funding for APASS has been provided by the Robert Martin Ayers Sciences Fund. This study made VIZIER and SIMBAD databases at CDS, Strasbourg, France.
References
- Qian, S., Are Overcontact Binaries Undergoing Thermal Relaxation Oscillation With Variable Angular Momentum Loss?, Monthly Notice of the Royal Astronomical Society, 342, 1260-1270 (2003).
- Kalv, P. and Leis, L., New eclipsing variables in Vulpecula - SVS 1987 and SVS 1988, Astronomicheskii Tsirkulyar, 793, 8, (1973).
- Qian, S. and Ma, Y., Period Studies of Some Neglected Close Binaries: EP Andromedae, V724 Aquilae, SS Comae, AM Eridani, FZ Orionis, BY Pegasi, EQ Tauri, and NO Vulpeculae, The Publications of the Astronomical Society of the Pacific, 113, 754, (2001).
- Zasche, P., Wolf, M. and Kotkova, L., The First Light Curve Analysis of Two Overcontact Binaries: EY Cas and NO Vul, Information Bulletin on Variable Stars, 5812, 1 (2008).
- Bulut, A., Bulut, I., Çicek C. and Erdem, A., Light-time Effect in two Eclipsing Binaries: NO Vul and EW Lyr, AIP Conference Proceedings, 1815, 1 (2017).
- Svechnikov, M.A., Kuznetsova E.F., Catalogue of Approximate Photometric and Absolute Elements of Eclipsing Variable Stars, Ural university publication” (1990).
- Kreiner, J.M., Kim, C-H., Nha, II-Seong, An atlas of O-C Diagrams of Eclipsing Binary Stars, Cracow, Poland (2001).
- Wilson, R.E. and Devinney, E.J., Realization of Accurate Close-Binary Light Curves: Application to MR Cygni, Astrophysics Journal, 166, 605 (1971).
- Cox, A. N., “Allen's astrophysical quantities”, 4th ed. Publisher: New York: AIP Press; Springer, 2000. Editedy by Arthur N. Cox. ISBN: 0387987460 (2000).
- Lucy, L.B., Gravity-Darkening for Stars with Convective Envelopes, Zeitschrift für Astrophysik, 65, 89 (1967).
- Irwin, J.B., Standard Light-Time Curves, Astronomical Journal, 64, 149 (1959).
- Kwee, K.K., Investigation of Variations in The Period of Sixteen Bright Short- Period Eclipsing Binary Stars, Bulletin of the Astronomical Institutes of the Netherlands, 14: 131(1958).
- Applegate, J.H., A Mechanism for Orbital Period Modulation in Close Binaries, Astrophysical Journal, 385, 621(1992).
Year 2021,
Volume: 23 Issue: 1, 30 - 38, 29.01.2021
Abstract
References
- Qian, S., Are Overcontact Binaries Undergoing Thermal Relaxation Oscillation With Variable Angular Momentum Loss?, Monthly Notice of the Royal Astronomical Society, 342, 1260-1270 (2003).
- Kalv, P. and Leis, L., New eclipsing variables in Vulpecula - SVS 1987 and SVS 1988, Astronomicheskii Tsirkulyar, 793, 8, (1973).
- Qian, S. and Ma, Y., Period Studies of Some Neglected Close Binaries: EP Andromedae, V724 Aquilae, SS Comae, AM Eridani, FZ Orionis, BY Pegasi, EQ Tauri, and NO Vulpeculae, The Publications of the Astronomical Society of the Pacific, 113, 754, (2001).
- Zasche, P., Wolf, M. and Kotkova, L., The First Light Curve Analysis of Two Overcontact Binaries: EY Cas and NO Vul, Information Bulletin on Variable Stars, 5812, 1 (2008).
- Bulut, A., Bulut, I., Çicek C. and Erdem, A., Light-time Effect in two Eclipsing Binaries: NO Vul and EW Lyr, AIP Conference Proceedings, 1815, 1 (2017).
- Svechnikov, M.A., Kuznetsova E.F., Catalogue of Approximate Photometric and Absolute Elements of Eclipsing Variable Stars, Ural university publication” (1990).
- Kreiner, J.M., Kim, C-H., Nha, II-Seong, An atlas of O-C Diagrams of Eclipsing Binary Stars, Cracow, Poland (2001).
- Wilson, R.E. and Devinney, E.J., Realization of Accurate Close-Binary Light Curves: Application to MR Cygni, Astrophysics Journal, 166, 605 (1971).
- Cox, A. N., “Allen's astrophysical quantities”, 4th ed. Publisher: New York: AIP Press; Springer, 2000. Editedy by Arthur N. Cox. ISBN: 0387987460 (2000).
- Lucy, L.B., Gravity-Darkening for Stars with Convective Envelopes, Zeitschrift für Astrophysik, 65, 89 (1967).
- Irwin, J.B., Standard Light-Time Curves, Astronomical Journal, 64, 149 (1959).
- Kwee, K.K., Investigation of Variations in The Period of Sixteen Bright Short- Period Eclipsing Binary Stars, Bulletin of the Astronomical Institutes of the Netherlands, 14: 131(1958).
- Applegate, J.H., A Mechanism for Orbital Period Modulation in Close Binaries, Astrophysical Journal, 385, 621(1992).
There are 13 citations in total.
Details
| Primary Language | English |
|---|---|
| Journal Section | Research Articles |
| Authors | |
| Publication Date | January 29, 2021 |
| Submission Date | April 18, 2020 |
| Published in Issue | Year 2021 Volume: 23 Issue: 1 |