FIRST RESULTS FROM THE SWARMS SURVEY. SDSS 1257+5428: A NEARBY, MASSIVE WHITE DWARF BINARY WITH A LIKELY NEUTRON STAR OR BLACK HOLE COMPANION

被引：54

作者：

Badenes, Carles ^{[1
,2
,3
]}

Mullally, Fergal ^{[1
]}

Thompson, Susan E. ^{[4
,5
]}

Lupton, Robert H. ^{[1
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[2] Weizmann Inst Sci, Fac Phys, Benoziyo Ctr Astrophys, IL-76100 Rehovot, Israel

[3] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[4] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[5] Mt Cuba Observ, Delaware Asteroseism Res Ctr, Greenville, DE 19807 USA

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 707卷 / 02期

关键词：

binaries: close; binaries: spectroscopic; supernovae: general; white dwarfs; DIGITAL SKY SURVEY; GAMMA-RAY BURST; DATA RELEASE; EVOLUTION; PROGENITORS; SUPERNOVAE; CATALOG; RADIATION; PULSARS; SYSTEMS;

D O I：

10.1088/0004-637X/707/2/971

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first results from the SWARMS survey, an ongoing project to identify compact white dwarf (WD) binaries in the spectroscopic catalog of the Sloan Digital Sky Survey (SDSS). The first object identified by SWARMS, SDSS 1257+5428, is a single-lined spectroscopic binary in a circular orbit with a period of 4.56 hr and a semiamplitude of 322.7 +/- 6.3 kms(-1). From the spectrum and photometry, we estimate a WD mass of 0.92(-0.32)(+0.28) M-circle dot. Together with the orbital parameters of the binary, this implies that the unseen companion must be more massive than 1.62(-0.25)(+0.20) M-circle dot, and is in all likelihood either a neutron star or a black hole. At an estimated distance of 48(-19)(+10) pc, this would be the closest known stellar remnant of a supernova explosion.

引用

页码：971 / 978

页数：8

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