The detached binary IR cassiopeiae |
| |
| Affiliation: | 2. Desert Blooms Observatoery, Benson, AZ (31° 56.466′ N, 110° 15.419′ W);1. Astronomy Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421 Helwan, Cairo, Egypt;2. Kottamia Center of Scientific Excellence in Astronomy and Space Science (KCScE, STDF, ASRT), Cairo, Egypt;2. Desert Blooms Observatory, (31° 56.466′ N, 110° 15.419′ W), Benson, AZ, United States;3. Guest User, Canadian Astronomy Data Centre, which is operated by the Dominion Astrophysical Observatory for the National Research Council of Canada''s Herzberg Institute of Astrophysics;4. West Challow Observatory, OX12 9TX, United Kingdom |
| |
| Abstract: | The first radial velocity curves for IR Cas have been obtained. Combined with new light curve data, simultaneous Roche-based light curve analyses have been carried out using the 2003 version of the Wilson-Devinney code. New values for the masses, radii, and luminosities have been obtained: M1 = 1.40 (4) M ʘ, M 2 = 1.20 (3) M ʘ, R1 = 1.75 (2) Rʘ, R2 = 1.62 (2) Rʘ, L1 = 5.11 (9) L ʘ, and L 2 = 2.56 (16) L ʘ. Comparison with the results from the photometric only analysis of Li et al. (2014) reveal remarkable agreement; however, they concluded a semi-detached system, whereas this paper concludes that this is a detached system. Reference to the plotted log L vs log T data of Yakut and Eggleton (2005) suggests that both stars are evolved. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
