About ProjectProject name: Binary Systems of South and North (BSN-Project)
Selecting binary systems:
- W UMa binary system type.
- Range greater than 0.2 magnitudes (easier for inexperienced observers to record useful data)
- Period less than 0.4 day (so full the light curve can be recorded in a few nights)
- Brighter than V magnitude 13 at minimum.
- Observing in more than 2 filters. Especially V and B bands.
- Select systems whose light curves have not yet been studied or have been studied in the far years ago.
- Times of Minimum to refine period (VSS already has a project on southern eclipsing binaries with this aim, results published annually).
- Full light curves in one or more filters for light curve modelling.
- O-C diagram to look for apsidal motion, period change, third bodies, etc. (this would require repeated observations over many years).
- Understudied or newly discovered eclipsing binaries (surveys such as ASAS, ASAS-SN, SWASP, etc. have discovered many EB’s that should be observed to confirm the type, period, etc.).
- Publishing one or more joint papers.
- Atila Poro (Astronomy Department of the Raderon Lab., Burnaby, BC, Canada)
- Mark G. Blackford (Variable Stars South, Congarinni Observatory, Australia)
- Edwin Budding (Carter Observatory, New Zealand)
- Areg Mickaelian (Byurakan Astrophysical Observatory, Armenia)
- Fahri Alicavus (Çanakkale Onsekiz Mart University, Turkey)
- Robert (Bob) H. Nelson (Prince George, BC., Canada)
- Raul Michel Murillo (The Institute of Astronomy, UNAM, Mexico)
- Mehmet Tanriver (Erciyes University, Turkey)
- Congarinni Observatory, Australia
- Byurakan Astrophysical Observatory, Armenia
- Astronomy Department of the Raderon Lab., Burnaby, BC, Canada
- Observatory of Adana Çukurova University, Turkey
- Complejo Astronomico El Leoncito (CASLEO), San Juan, Argentina
- Variable Star and Exoplanet Section of Czech Astronomical Society, Czech Republic
- Astrophysics Research Centre and Observatory, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
- The Institute of Astronomy, UNAM, Mexico
- Erciyes University, Astronomy and Space Science Observatory Application and Research Center, Kayseri, Turkey
- Poro, A., Alicavus, F., Fernández-Lajús, E., Davoudi, F., MirshafieKhozani, P., Blackford, M.G., Budding, E., Jalalabadi, B.Z., Rahimi, J. and Farahani, F.A., 2020. BVRI Photometric Observations, Light Curve Solutions and Orbital Period Analysis of BF Pav. Research in Astronomy and Astrophysics, Vol. 21 No. 8. DOI: 10.1088/1674-4527/21/8/203
- Poro, A., Blackford, M.G., Davoudi, F., Mohandes, A., Madani, M., Rezaei, S. and Bozorgzadeh, E., 2021. The New Ephemeris and Light Curve Analysis of V870 Ara by the Ground-Based and TESS Data. Open Astronomy, 30(1), pp.37-44. DOI: 10.1515/astro-2021-0004
- Poro, A., Blackford, M.G., Salehian, S.R., Jahangiri, E., Dastjerdi, M.S., Gozarandi, M., Karimi, R., Madayen, T., Bakhshi, E. and Hedayati, F., 2022. The First Photometric Study of AH Mic Contact Binary System. Research in Astronomy and Astrophysics. DOI: 10.1088/1674-4527/ac6417
- A. Poro, E. Paki, M. G. Blackford, F. Davoudi, Y. Aladag, S. Zamanpour, S. Sarabi, A. Halavati, N. Aksaker, H. Bagis, J. Rahimi, H. Guilani, A. Akyuz, F. Jahediparizi, O. Doner, Z. Ashrafzadeh, 2022. The Photometric Study of Six W UMa Systems and Investigation of the Mass–Radius Relations for Contact Binary Stars. Publications of the Astronomical Society of the Pacific. DOI: 10.1088/1538-3873/ac71cd