The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries

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The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries. / Brown, Warren R.; Kilic, Mukremin; Kosakowski, Alekzander; Andrews, Jeff J.; Heinke, Craig O.; Agueros, Marcel A.; Camilo, Fernando; Gianninas, A.; Hermes, J. J.; Kenyon, Scott J.

In: Astrophysical Journal, Vol. 889, No. 1, 49, 20.01.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Brown, WR, Kilic, M, Kosakowski, A, Andrews, JJ, Heinke, CO, Agueros, MA, Camilo, F, Gianninas, A, Hermes, JJ & Kenyon, SJ 2020, 'The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries', Astrophysical Journal, vol. 889, no. 1, 49. https://doi.org/10.3847/1538-4357/ab63cd

APA

Brown, W. R., Kilic, M., Kosakowski, A., Andrews, J. J., Heinke, C. O., Agueros, M. A., Camilo, F., Gianninas, A., Hermes, J. J., & Kenyon, S. J. (2020). The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries. Astrophysical Journal, 889(1), [49]. https://doi.org/10.3847/1538-4357/ab63cd

Vancouver

Brown WR, Kilic M, Kosakowski A, Andrews JJ, Heinke CO, Agueros MA et al. The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries. Astrophysical Journal. 2020 Jan 20;889(1). 49. https://doi.org/10.3847/1538-4357/ab63cd

Author

Brown, Warren R. ; Kilic, Mukremin ; Kosakowski, Alekzander ; Andrews, Jeff J. ; Heinke, Craig O. ; Agueros, Marcel A. ; Camilo, Fernando ; Gianninas, A. ; Hermes, J. J. ; Kenyon, Scott J. / The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries. In: Astrophysical Journal. 2020 ; Vol. 889, No. 1.

Bibtex

@article{166b279249eb4a9cacb35e17aba62811,
title = "The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries",
abstract = "We present the final sample of 98 detached double white dwarf (WD) binaries found in the Extremely Low Mass (ELM) Survey, a spectroscopic survey targeting M He-core WDs completed in the Sloan Digital Sky Survey footprint. Over the course of the survey we observed ancillary low-mass WD candidates like GD 278, which we show is a P = 0.19 day double WD binary, as well as candidates that turn out to be field blue straggler/subdwarf A-type stars with luminosities too high to be WDs given their Gaia parallaxes. Here, we define a clean sample of ELM WDs that is complete within our target selection and magnitude range 15 g(0) P <1.5 day double WD binaries, 35% of which belong to the Galactic halo. We infer that these are mostly He+CO WD binaries given the measurement constraints. The merger rate of the observed He+CO WD binaries exceeds the formation rate of stable mass-transfer AM CVn binaries by a factor of 25, and so the majority of He+CO WD binaries must experience unstable mass transfer and merge. The systems with the shortest periods, such as J0651+2844, are signature LISA verification binaries that can be studied with gravitational waves and light.",
keywords = "White dwarf stars, Compact binary stars, Galaxy stellar content, COMMON-ENVELOPE BINARIES, AM CVN STARS, NEUTRON-STAR, SDA PROBLEM, SDSS, POPULATION, CATALOG, SEARCH, SAMPLE, GAIA",
author = "Brown, {Warren R.} and Mukremin Kilic and Alekzander Kosakowski and Andrews, {Jeff J.} and Heinke, {Craig O.} and Agueros, {Marcel A.} and Fernando Camilo and A. Gianninas and Hermes, {J. J.} and Kenyon, {Scott J.}",
year = "2020",
month = jan,
day = "20",
doi = "10.3847/1538-4357/ab63cd",
language = "English",
volume = "889",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - The ELM Survey. VIII. Ninety-eight Double White Dwarf Binaries

AU - Brown, Warren R.

AU - Kilic, Mukremin

AU - Kosakowski, Alekzander

AU - Andrews, Jeff J.

AU - Heinke, Craig O.

AU - Agueros, Marcel A.

AU - Camilo, Fernando

AU - Gianninas, A.

AU - Hermes, J. J.

AU - Kenyon, Scott J.

PY - 2020/1/20

Y1 - 2020/1/20

N2 - We present the final sample of 98 detached double white dwarf (WD) binaries found in the Extremely Low Mass (ELM) Survey, a spectroscopic survey targeting M He-core WDs completed in the Sloan Digital Sky Survey footprint. Over the course of the survey we observed ancillary low-mass WD candidates like GD 278, which we show is a P = 0.19 day double WD binary, as well as candidates that turn out to be field blue straggler/subdwarf A-type stars with luminosities too high to be WDs given their Gaia parallaxes. Here, we define a clean sample of ELM WDs that is complete within our target selection and magnitude range 15 g(0) P <1.5 day double WD binaries, 35% of which belong to the Galactic halo. We infer that these are mostly He+CO WD binaries given the measurement constraints. The merger rate of the observed He+CO WD binaries exceeds the formation rate of stable mass-transfer AM CVn binaries by a factor of 25, and so the majority of He+CO WD binaries must experience unstable mass transfer and merge. The systems with the shortest periods, such as J0651+2844, are signature LISA verification binaries that can be studied with gravitational waves and light.

AB - We present the final sample of 98 detached double white dwarf (WD) binaries found in the Extremely Low Mass (ELM) Survey, a spectroscopic survey targeting M He-core WDs completed in the Sloan Digital Sky Survey footprint. Over the course of the survey we observed ancillary low-mass WD candidates like GD 278, which we show is a P = 0.19 day double WD binary, as well as candidates that turn out to be field blue straggler/subdwarf A-type stars with luminosities too high to be WDs given their Gaia parallaxes. Here, we define a clean sample of ELM WDs that is complete within our target selection and magnitude range 15 g(0) P <1.5 day double WD binaries, 35% of which belong to the Galactic halo. We infer that these are mostly He+CO WD binaries given the measurement constraints. The merger rate of the observed He+CO WD binaries exceeds the formation rate of stable mass-transfer AM CVn binaries by a factor of 25, and so the majority of He+CO WD binaries must experience unstable mass transfer and merge. The systems with the shortest periods, such as J0651+2844, are signature LISA verification binaries that can be studied with gravitational waves and light.

KW - White dwarf stars

KW - Compact binary stars

KW - Galaxy stellar content

KW - COMMON-ENVELOPE BINARIES

KW - AM CVN STARS

KW - NEUTRON-STAR

KW - SDA PROBLEM

KW - SDSS

KW - POPULATION

KW - CATALOG

KW - SEARCH

KW - SAMPLE

KW - GAIA

U2 - 10.3847/1538-4357/ab63cd

DO - 10.3847/1538-4357/ab63cd

M3 - Journal article

VL - 889

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 49

ER -

ID: 247498639