First Results from the Swarms Survey. SDSS 1257+5428: A Nearby, Massive White Dwarf Binary with a Likely Neutron Star or Black Hole Companion

Abstract

We present the first results from SWARMS (Sloan White dwArf Radial velocity data Mining Survey), an ongoing project to identify compact white dwarf (WD) binaries in the spectroscopic catalog of the Sloan Digital Sky Survey. 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. From the spectrum and photometry, we estimate a WD mass of 0.92(+0.28,-0.32) Msun. Together with the orbital parameters of the binary, this implies that the unseen companion must be more massive than 1.62(+0.20,-0.25) Msun, and is in all likelihood either a neutron star or a black hole. At an estimated distance of 48(+10,-19) pc, this would be the closest known stellar remnant of a supernova explosion.

8 pages, 8 figures, ApJ in press

References in corpus (10)

• Neutron Star Observations: Prognosis for Equation of State Constraints
• An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova
• White Dwarf Mass Distribution in the SDSS
• Constraining the Type Ia Supernova Progenitor: The Search for Hydrogen in Nebular Spectra
• A new type of long gamma--ray burst
• The Galactic Gravitational wave foreground
• The Magnificent Seven in the dusty prairie -- The role of interstellar absorption on the observed neutron star population
• X-Ray-Emitting Stars Identified from the ROSAT All-Sky Survey and the Sloan Digital Sky Survey
• SDSS White Dwarf mass distribution at low effective temperatures
• The HYPERMUCHFUSS Campaign -- an undiscovered high velocity population

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