The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers

doi:10.3847/1538-4357/ad0a65

YNAO OpenIR > 恒星物理研究组

	The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers
	Zhang, Xianfei 1,2; Jeffery, C. Simon 3; Su J(苏杰)4,5,6 ; Bi, Shaolan 1,2
发表期刊	ASTROPHYSICAL JOURNAL
	2023-12-01
卷号	959 期号:1
DOI	10.3847/1538-4357/ad0a65
产权排序	第4完成单位
收录类别	SCI
摘要	Blue large-amplitude pulsators (BLAPs) are hot low-mass stars that show large-amplitude light variations likely due to radial oscillations driven by iron group opacities. Period changes provide evidence of both secular contraction and expansion among the class. Various formation histories have been proposed, but none are completely satisfactory. Zhang et al. proposed that the merger of a helium-core white dwarf with a low-mass main-sequence star (HeWD+MS) can lead to the formation of some classes of hot subdwarfs. We have analyzed these HeWD+MS merger models in more detail. Between helium-shell ignition and full helium-core burning, the models pass through the volume of luminosity-gravity-temperature space occupied by BLAPs. Periods of expansion and contraction associated with helium-shell flashes can account for the observed rates of period change. We argue that the HeWD+MS merger model provides at least one BLAP formation channel.
资助项目	National Natural Science Foundation of China[12073006]; National Natural Science Foundation of China[12090040]; National Natural Science Foundation of China[12090042]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12133011]; National Natural Science Foundation of China[11833006]; National Natural Science Foundation of China (NSFC)[U2031203]; Chinese Academy of Sciences (CAS); CAS Light of West China Program; China Manned Space Project[CMS-CSST-2021-A10]; Northern Ireland Department for Communities
项目资助者	National Natural Science Foundation of China[12073006, 12090040, 12090042, 12288102, 12133011, 11833006] ; National Natural Science Foundation of China (NSFC)[U2031203] ; Chinese Academy of Sciences (CAS) ; CAS Light of West China Program ; China Manned Space Project[CMS-CSST-2021-A10] ; Northern Ireland Department for Communities
语种	英语
学科领域	天文学
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:001112040500001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	SUBDWARF-B-STARS ; CONVECTIVE BOUNDARIES ; EVOLUTIONARY STATUS ; VARIABLE-STARS ; COOLING CURVE ; BINARY STARS ; GAIA DR2 ; MODULES ; OSCILLATIONS ; PULSATIONS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/26458
专题	恒星物理研究组中国科学院天体结构与演化重点实验室
作者单位	1.Institute for Frontier in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People's Republic of China; [email protected]; 2.Department of Astronomy, Beijing Normal University, Beijing 100875, People's Republic of China; 3.Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, UK; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 6.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China
推荐引用方式 GB/T 7714	Zhang, Xianfei,Jeffery, C. Simon,Su J,et al. The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers[J]. ASTROPHYSICAL JOURNAL,2023,959(1).
APA	Zhang, Xianfei,Jeffery, C. Simon,苏杰,&Bi, Shaolan.(2023).The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers.ASTROPHYSICAL JOURNAL,959(1).
MLA	Zhang, Xianfei,et al."The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers".ASTROPHYSICAL JOURNAL 959.1(2023).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
The Formation of Blu（1191KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文