A likely candidate of type Ia supernova progenitors： the X-ray pulsating companion of the hot subdwa

• 作 者: Bo Wang Zhan-Wen Han
• 机 构: NationalAstronomicalObservatories/YunnanObservatory,KeyLaboratoryfortheStructureandEvolutionofCelest
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2010年7期
• 关键词: X射线脉冲 IA超新星 候选人 类型 IA型超新星 恒星演化 双星系统 大肠杆菌 binaries close -- stars individual （
• 基金项目: Supported by the National Natural Science Foundation of China.Acknowledgements We thank the anonymous referee for valuable comments that helped us to improve the paper. This work is supported by the N

HD 49798 is a hydrogen depleted subdwarf O6 star and has an X-ray pulsating companion (RX J0648.0-4418). The X-ray pulsating companion is a massive white dwarf. Employing Eggleton's stellar evolution code with the optically thick wind assumption, we f