The Identification of the White Dwarf Companion to the Millisecond Pulsar J2317+1439

doi:10.3847/1538-4357/aa7209

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	The Identification of the White Dwarf Companion to the Millisecond Pulsar J2317+1439
	Dai, S.5; Smith, M. C.2; Wang, S.3; Okamoto, S.2; Xu, R. X.1,4; Yue, Y. L.3; Liu, J. F.3
刊名	ASTROPHYSICAL JOURNAL
	2017-06-20
卷号	842 期号:2
关键词	Pulsars: General Stars: Individual (Psr j2317+1439) White Dwarfs
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa7209
英文摘要	We report the identification of the optical counterpart to the companion of the millisecond pulsar J2317+1439. At the timing position of the pulsar, we find an object with g = 22.96 +/- 0.05, r = 22.86 +/- 0.04, and i = 22.82 +/- 0.05. The magnitudes and colors of the object are consistent with a white dwarf (WD). Compared with WD cooling models, we estimate that it has a mass of 0.39-(+0.13)(0.10) M-circle dot, an effective temperature of 8077(-470)(+550) K, and a cooling age of 10.9 +/- 0.3Gyr. Combining our results with published constraints on the orbital parameters obtained through pulsar timing, we estimate the pulsar mass to be 3.4(-1.)(+1.4) M-circle dot, Although the constraint on the pulsar mass is still weak, there is a significant possibility that the pulsar could be more massive than two solar masses.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000403775600007
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32601]
专题	中国科学院上海天文台
通讯作者	Dai, S.
作者单位	1.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 5.CSIRO, Australia Telescope Natl Facil, Astron & Space Sci, Box 76, Epping, NSW 1710, Australia
推荐引用方式 GB/T 7714	Dai, S.,Smith, M. C.,Wang, S.,et al. The Identification of the White Dwarf Companion to the Millisecond Pulsar J2317+1439[J]. ASTROPHYSICAL JOURNAL,2017,842(2).
APA	Dai, S..,Smith, M. C..,Wang, S..,Okamoto, S..,Xu, R. X..,...&Liu, J. F..(2017).The Identification of the White Dwarf Companion to the Millisecond Pulsar J2317+1439.ASTROPHYSICAL JOURNAL,842(2).
MLA	Dai, S.,et al."The Identification of the White Dwarf Companion to the Millisecond Pulsar J2317+1439".ASTROPHYSICAL JOURNAL 842.2(2017).