Determination methods of the distance to NOVAE
- Paper number
IAC-23,A7,IP,8,x77254
- Author
Dr. Kamala Alisheva, Baku State University, Azerbaijan
- Coauthor
Dr. Khidir Mikailov, Baku State University, Azerbaijan
- Coauthor
Mrs. Aynur Alili, Baku State University, Azerbaijan
- Coauthor
Dr. Bayram Rustamov, Baku State University, Azerbaijan
- Year
2023
- Abstract
The explosion of NOVAE considers one of the most interesting astronomical events. In the scientific work that is under review, distances to NOVAE were determined by 2 different types, Sct 2017 and Nova Per 2020, it means, by photometric and spectroscopic methods. Part of the spectra of observed stars were obtained at the 2-meter telescope of Shamakhi Astrophysical Observatory, and others were taken from the ESO and ARAS Databases. Photometric observation materials are taken from the AAVSO database. Based on the time, according to the luminosity curve it takes for NOVAE to decrease in apparent magnitude to 2 and 3 magnitudes have been determined the absolute stellar magnitudes of both Novae: M_V=-7,56m for Sct 2017, M_V=-7,47 m for Nova Per 2020. DIB lines in the spectra of stars are considered distance indicators.The interstellar medium observed in the spectra of novae (DİB 5780, 5797, 6614), according to the equivalent widths of the lines Na and Ca, E(B-V) extension is set to: E(B-V) =0.86 for Sct 2017 and E(B-V) =0.87 for Nova Per 2020. Based on these are determined the distances to Novae. Thus, using the methods proposed by various authors the distances were calculated. d=4.5 kps for Sct 2017. d=3.2 kps for Nova Per 2020.
- Abstract document
- Manuscript document
(absent)