Insights into internal effects of common-envelope evolution using the extended Kepler mission

J. J. Hermes; B. T. Gänsicke; A. Bischoff-Kim; Steven D. Kawaler; J. T. Fuchs; B. H. Dunlap; J. C. Clemens; M. H. Montgomery; P. Chote; Thomas Barclay; T. R. Marsh; A. Gianninas; D. Koester; D. E. Winget; D. J. Armstrong; A. Rebassa-Mansergas; M. R. Schreiber

doi:10.1093/mnras/stv1053

Insights into internal effects of common-envelope evolution using the extended Kepler mission

J. J. Hermes, B. T. Gänsicke, A. Bischoff-Kim, Steven D. Kawaler, J. T. Fuchs, B. H. Dunlap, J. C. Clemens, M. H. Montgomery, P. Chote, Thomas Barclay, T. R. Marsh, A. Gianninas, D. Koester, D. E. Winget, D. J. Armstrong, A. Rebassa-Mansergas, M. R. Schreiber

Penn State Scranton

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29 Scopus citations

Abstract

We present an analysis of the binary and physical parameters of a unique pulsating white dwarf with a main-sequence companion, SDSS J1136+0409, observed for more than 77 d during the first pointing of the extended Kepler mission: K2 Campaign 1. Using new groundbased spectroscopy, we show that this post-common-envelope binary has an orbital period of 6.89760103(60) h, which is also seen in the photometry as a result of Doppler beaming and ellipsoidal variations of the secondary.We spectroscopically refine the temperature of the white dwarf to 12 330 ± 260 K and its mass to 0.601 ± 0.036 M⊙. We detect seven independent pulsation modes in the K2 light curve. A preliminary asteroseismic solution is in reasonable agreement with the spectroscopic atmospheric parameters. Three of the pulsation modes are clearly rotationally split multiplets, which we use to demonstrate that the white dwarf is not synchronously rotating with the orbital period but has a rotation period of 2.49 ± 0.53 h. This is faster than any known isolated white dwarf, but slower than almost all white dwarfs measured in non-magnetic cataclysmic variables, the likely future state of this binary.

Original language	English (US)
Pages (from-to)	1701-1712
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	451
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stv1053
State	Published - May 1 2015

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Hermes, J. J., Gänsicke, B. T., Bischoff-Kim, A., Kawaler, S. D., Fuchs, J. T., Dunlap, B. H., Clemens, J. C., Montgomery, M. H., Chote, P., Barclay, T., Marsh, T. R., Gianninas, A., Koester, D., Winget, D. E., Armstrong, D. J., Rebassa-Mansergas, A., & Schreiber, M. R. (2015). Insights into internal effects of common-envelope evolution using the extended Kepler mission. Monthly Notices of the Royal Astronomical Society, 451(2), 1701-1712. https://doi.org/10.1093/mnras/stv1053

@article{13f9ca756d66476c90931d142abab667,

title = "Insights into internal effects of common-envelope evolution using the extended Kepler mission",

abstract = "We present an analysis of the binary and physical parameters of a unique pulsating white dwarf with a main-sequence companion, SDSS J1136+0409, observed for more than 77 d during the first pointing of the extended Kepler mission: K2 Campaign 1. Using new groundbased spectroscopy, we show that this post-common-envelope binary has an orbital period of 6.89760103(60) h, which is also seen in the photometry as a result of Doppler beaming and ellipsoidal variations of the secondary.We spectroscopically refine the temperature of the white dwarf to 12 330 ± 260 K and its mass to 0.601 ± 0.036 M⊙. We detect seven independent pulsation modes in the K2 light curve. A preliminary asteroseismic solution is in reasonable agreement with the spectroscopic atmospheric parameters. Three of the pulsation modes are clearly rotationally split multiplets, which we use to demonstrate that the white dwarf is not synchronously rotating with the orbital period but has a rotation period of 2.49 ± 0.53 h. This is faster than any known isolated white dwarf, but slower than almost all white dwarfs measured in non-magnetic cataclysmic variables, the likely future state of this binary.",

author = "Hermes, {J. J.} and G{\"a}nsicke, {B. T.} and A. Bischoff-Kim and Kawaler, {Steven D.} and Fuchs, {J. T.} and Dunlap, {B. H.} and Clemens, {J. C.} and Montgomery, {M. H.} and P. Chote and Thomas Barclay and Marsh, {T. R.} and A. Gianninas and D. Koester and Winget, {D. E.} and Armstrong, {D. J.} and A. Rebassa-Mansergas and Schreiber, {M. R.}",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.",

year = "2015",

month = may,

day = "1",

doi = "10.1093/mnras/stv1053",

language = "English (US)",

volume = "451",

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Hermes, JJ, Gänsicke, BT, Bischoff-Kim, A, Kawaler, SD, Fuchs, JT, Dunlap, BH, Clemens, JC, Montgomery, MH, Chote, P, Barclay, T, Marsh, TR, Gianninas, A, Koester, D, Winget, DE, Armstrong, DJ, Rebassa-Mansergas, A & Schreiber, MR 2015, 'Insights into internal effects of common-envelope evolution using the extended Kepler mission', Monthly Notices of the Royal Astronomical Society, vol. 451, no. 2, pp. 1701-1712. https://doi.org/10.1093/mnras/stv1053

TY - JOUR

T1 - Insights into internal effects of common-envelope evolution using the extended Kepler mission

AU - Hermes, J. J.

AU - Gänsicke, B. T.

AU - Bischoff-Kim, A.

AU - Kawaler, Steven D.

AU - Fuchs, J. T.

AU - Dunlap, B. H.

AU - Clemens, J. C.

AU - Montgomery, M. H.

AU - Chote, P.

AU - Barclay, Thomas

AU - Marsh, T. R.

AU - Gianninas, A.

AU - Koester, D.

AU - Winget, D. E.

AU - Armstrong, D. J.

AU - Rebassa-Mansergas, A.

AU - Schreiber, M. R.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - We present an analysis of the binary and physical parameters of a unique pulsating white dwarf with a main-sequence companion, SDSS J1136+0409, observed for more than 77 d during the first pointing of the extended Kepler mission: K2 Campaign 1. Using new groundbased spectroscopy, we show that this post-common-envelope binary has an orbital period of 6.89760103(60) h, which is also seen in the photometry as a result of Doppler beaming and ellipsoidal variations of the secondary.We spectroscopically refine the temperature of the white dwarf to 12 330 ± 260 K and its mass to 0.601 ± 0.036 M⊙. We detect seven independent pulsation modes in the K2 light curve. A preliminary asteroseismic solution is in reasonable agreement with the spectroscopic atmospheric parameters. Three of the pulsation modes are clearly rotationally split multiplets, which we use to demonstrate that the white dwarf is not synchronously rotating with the orbital period but has a rotation period of 2.49 ± 0.53 h. This is faster than any known isolated white dwarf, but slower than almost all white dwarfs measured in non-magnetic cataclysmic variables, the likely future state of this binary.

AB - We present an analysis of the binary and physical parameters of a unique pulsating white dwarf with a main-sequence companion, SDSS J1136+0409, observed for more than 77 d during the first pointing of the extended Kepler mission: K2 Campaign 1. Using new groundbased spectroscopy, we show that this post-common-envelope binary has an orbital period of 6.89760103(60) h, which is also seen in the photometry as a result of Doppler beaming and ellipsoidal variations of the secondary.We spectroscopically refine the temperature of the white dwarf to 12 330 ± 260 K and its mass to 0.601 ± 0.036 M⊙. We detect seven independent pulsation modes in the K2 light curve. A preliminary asteroseismic solution is in reasonable agreement with the spectroscopic atmospheric parameters. Three of the pulsation modes are clearly rotationally split multiplets, which we use to demonstrate that the white dwarf is not synchronously rotating with the orbital period but has a rotation period of 2.49 ± 0.53 h. This is faster than any known isolated white dwarf, but slower than almost all white dwarfs measured in non-magnetic cataclysmic variables, the likely future state of this binary.

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DO - 10.1093/mnras/stv1053

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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ER -

Insights into internal effects of common-envelope evolution using the extended Kepler mission

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