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Al-Wardat’s Method for Analyzing Binary and Multiple Stellar Systems

Published online by Cambridge University Press:  05 August 2026

Mashhoor A. Al-WardatOpen the ORCID record for Mashhoor A. Al-Wardat[Opens in a new window]
Mashhoor A. Al-Wardat*
Affiliation:
Department of Applied Physics and Astronomy, College of Sciences, and Sharjah Academy for Astronomy, Space Sciences and Technology, University of Sharjah, Sharjah 27272, UAEDepartment of Physics, Faculty of Sciences, Al al-Bayt University, PO Box: 130040, Mafraq, 25113 Jordan
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Abstract

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The astrophysical studies showed that there is no direct method to estimate the fundamental parameters of the individual components of binary and multiple stellar systems (BMSSs). So, computational methods are the only way to reveal the mysteries of these systems. Introduced in 2002 for the first time, Al-Wardat’s method for analyzing BMSSs proved its ability, reliability, and flexibility in analyzing BMSSs. We present here a brief description of the method, along with the analysis of the binary system HIP 111170. The method is suitable for all kinds of BMSSs. It gives a precise dynamical parallax for any system given that it has a good orbital solution, either outer or inner, visual or spectroscopic orbits. The analysis of the system HIP111170 showed that the system consists of two main-sequence solar-metallicity stars with an age of 2.239 Gyr, formed by fragmentation.

Keywords

Stars: binaries (including multiple): closestars: binaries: visualspectroscopicStars: parallaxes: Astrometry and celestial mechanics

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 20 , Symposium A31: Astronomy in Focus As presented at the IAU XXXI General Assembly, 2022 , August 2024, pp. 281 - 285
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Copyright
© The Author(s), 2026. Published by Cambridge University Press on behalf of The International Astronomical Union

References

Al-Tawalbeh, Y. M., Hussein, A. M., Taani, A. A., et al. 2021, Astrophysical Bulletin, 76, 71,CrossRefGoogle Scholar
Al-Wardat, M. A. 2002, Bulletin of the Special Astrophysics Observatory, 53, 51 Google Scholar
Al-Wardat, M. A. 2003, Bulletin of the Special Astrophysics Observatory, 55, 17 Google Scholar
Al-Wardat, M. 2012, Publications of the Astronomical Society of Australia, 29, 523 CrossRefGoogle Scholar
Al-Wardat, M. A., Abu-Alrob, E., Hussein, A. M., et al. 2021a, Research in Astronomy and Astrophysics, 21, 161 CrossRefGoogle Scholar
Al-Wardat, M. A., Hussein, A. M., Al-Naimiy, H. M., & Barstow, M. A. 2021b, Publications of the Astronomical Society of Australia, 38, e002,CrossRefGoogle Scholar
Bonnell, I. A., Bate, M. R., 1994, MNRAS, 271, 999. doi:10.1093/mnras/271.4.999 CrossRefGoogle Scholar
Castelli, F., & Kurucz, R. L. 2004, ArXiv Astrophysics e-printsGoogle Scholar
Docobo, J. A. 2019, IAU Commission on Double Stars, 198, 1 Google Scholar
Duchêne, G., & Kraus, A. 2013, Annual Review of Astronomy and Astrophysics, 51, 269 CrossRefGoogle Scholar
Duquennoy, A., & Mayor, M. 1991, Astronomy and Astrophysics, 248, 485 Google Scholar
Collaboration, Gaia. 2018, VizieR Online Data Catalog, 1345Google Scholar
Gáspár, A., Rieke, G. H., & Ballering, N. 2016, The Astrophysical Journal, 826, 171,CrossRefGoogle Scholar
Girardi, L., Bressan, A., Bertelli, G., Chiosi, C., 2000, A&AS, 141, 371. doi:10.1051/aas:2000126Google Scholar
Howell, S. B., Scott, N. J., Matson, R. A., et al. 2021, Frontiers in Astronomy and Space Sciences, 8, 10 Google Scholar
Hussein, A. M., Al-Wardat, M. A., Abushattal, A., et al. 2022, The Astronomical Journal, 163, 182 CrossRefGoogle Scholar
Masda, S. G., Al-Wardat, M. A., & Pathan, J. M. 2019, Research in Astronomy and Astrophysics, 19, 105,CrossRefGoogle Scholar
Perryman, M. A. C., Lindegren, L., Kovalevsky, J., et al. 1997, Astronomy and Astrophysics, 323, L49 Google Scholar
Raghavan, D., McAlister, H. A., Henry, T. J., et al. 2010, The Astrophysical Journal, 190, 1 CrossRefGoogle Scholar
Tanineah, D. M., Hussein, A. M., Widyan, H., & Al-Wardat, M. A. 2022, Advances in Space Research,Google Scholar
Yousef, Z. T., Annuar, A., Hussein, A. M., et al. 2021, Research in Astronomy and Astrophysics, 21, 114,CrossRefGoogle Scholar
Zinnecker, H., Mathieu, R., 2001, IAUS, 200Google Scholar