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

Badenes, Carles; Mullally, Fergal; Lupton, Robert H

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

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

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Abstract

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 km s{sup -1}. From the spectrum and photometry, we estimate a WD mass of 0.92{sup +0.28}{sub -0.32} M{sub sun}. Together with the orbital parameters of the binary, this implies that the unseen companion must be more massive than 1.62{sup +0.20}{sub -0.25} M{sub sun}, and is in all likelihood either a neutron star or a black hole. At an estimated distance of 48{sup +10}{sub -19} pc, this would be the closest known stellar remnant of a supernova explosion.

Authors:

Badenes, Carles; Mullally, Fergal; Lupton, Robert H ^[1]

Department of Astrophysical Sciences, Princeton University, Peyton Hall, Ivy Lane, Princeton, NJ 08544-1001 (United States)

Publication Date:: Sun Dec 20 00:00:00 EST 2009

OSTI Identifier:: 21392606

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal

Additional Journal Information:: Journal Volume: 707; Journal Issue: 2; Other Information: DOI: 10.1088/0004-637X/707/2/971; Journal ID: ISSN 0004-637X

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BLACK HOLES; CATALOGS; EXPLOSIONS; MASS; NEUTRON STARS; ORBITS; PHOTOMETRY; SPECTRA; SUPERNOVAE; WHITE DWARF STARS; BINARY STARS; DOCUMENT TYPES; DWARF STARS; ERUPTIVE VARIABLE STARS; STARS; VARIABLE STARS

Citation Formats


                    Badenes, Carles, Mullally, Fergal, Lupton, Robert H, and Thompson, Susan E., E-mail: badenes@astro.princeton.ed, E-mail: mullally@astro.princeton.ed, E-mail: rhl@astro.princeton.ed, E-mail: sthomp@physics.udel.ed. FIRST RESULTS FROM THE SWARMS SURVEY. SDSS 1257+5428: A NEARBY, MASSIVE WHITE DWARF BINARY WITH A LIKELY NEUTRON STAR OR BLACK HOLE COMPANION.  United States: N. p., 2009. 
        Web.  doi:10.1088/0004-637X/707/2/971.

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                    Badenes, Carles, Mullally, Fergal, Lupton, Robert H, & Thompson, Susan E., E-mail: badenes@astro.princeton.ed, E-mail: mullally@astro.princeton.ed, E-mail: rhl@astro.princeton.ed, E-mail: sthomp@physics.udel.ed. FIRST RESULTS FROM THE SWARMS SURVEY. SDSS 1257+5428: A NEARBY, MASSIVE WHITE DWARF BINARY WITH A LIKELY NEUTRON STAR OR BLACK HOLE COMPANION.  United States.  https://doi.org/10.1088/0004-637X/707/2/971

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                    Badenes, Carles, Mullally, Fergal, Lupton, Robert H, and Thompson, Susan E., E-mail: badenes@astro.princeton.ed, E-mail: mullally@astro.princeton.ed, E-mail: rhl@astro.princeton.ed, E-mail: sthomp@physics.udel.ed. 2009.  
        "FIRST RESULTS FROM THE SWARMS SURVEY. SDSS 1257+5428: A NEARBY, MASSIVE WHITE DWARF BINARY WITH A LIKELY NEUTRON STAR OR BLACK HOLE COMPANION".  United States.  https://doi.org/10.1088/0004-637X/707/2/971.

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@article{osti_21392606,

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

  author       = {Badenes, Carles and Mullally, Fergal and Lupton, Robert H and Thompson, Susan E., E-mail: badenes@astro.princeton.ed, E-mail: mullally@astro.princeton.ed, E-mail: rhl@astro.princeton.ed, E-mail: sthomp@physics.udel.ed},

  abstractNote = {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 km s{sup -1}. From the spectrum and photometry, we estimate a WD mass of 0.92{sup +0.28}{sub -0.32} M{sub sun}. Together with the orbital parameters of the binary, this implies that the unseen companion must be more massive than 1.62{sup +0.20}{sub -0.25} M{sub sun}, and is in all likelihood either a neutron star or a black hole. At an estimated distance of 48{sup +10}{sub -19} pc, this would be the closest known stellar remnant of a supernova explosion.},

  doi          = {10.1088/0004-637X/707/2/971},

  url          = {https://www.osti.gov/biblio/21392606},
  journal      = {Astrophysical Journal},

  issn         = {0004-637X},

  number       = 2,

  volume       = 707,

  place        = {United States},

  year         = {Sun Dec 20 00:00:00 EST 2009},

  month        = {Sun Dec 20 00:00:00 EST 2009}

}

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