Year: 2010
Type: article
Abstract: The binding energy parameter λ plays an important role in common envelope evolution. Previous works have already pointed out that λ varies throughout the stellar evolution, though it has been adopted as a constant in most of the population synthesis calculations. We have systematically calculated the binding energy parameter λ for both Population I and Population II stars of masses 1–20 M ☉ , taking into account the contribution from the internal energy of stellar matter. We present fitting formulae for λ that can be incorporated into future population synthesis investigations. We also briefly discuss the possible applications of the results in binary evolutions.
Source: The Astrophysical Journal
Authors: Xiao-Jie Xu, Xiang-Dong Li
Institution: Nanjing University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: G3593611545, G4401652328, 星系中的X射线源研究
OpenAlex ID: W2036973503