SDSS J1152+0248: An eclipsing double white dwarf from the Kepler K2 campaign

N. Hallakoun; D. Maoz; M. Kilic; T. Mazeh; A. Gianninas; E. Agol; K. J. Bell; S. Bloemen; W. R. Brown; J. Debes; S. Faigler; I. Kull; T. Kupfer; A. Loeb; B. M. Morris; F. Mullally

doi:10.1093/mnras/stw364

SDSS J1152+0248: An eclipsing double white dwarf from the Kepler K2 campaign

N. Hallakoun, D. Maoz, M. Kilic, T. Mazeh, A. Gianninas, E. Agol, K. J. Bell, S. Bloemen, W. R. Brown, J. Debes, S. Faigler, I. Kull, T. Kupfer, A. Loeb, B. M. Morris, F. Mullally

School of Physics and Astronomy

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

Abstract

We report the discovery of the sixth known eclipsing double white dwarf (WD) system, SDSS J1152+0248, with a 2.3968 ± 0.0003 h orbital period, in data from the Kepler Mission's K2 continuation. Analysing and modelling the K2 data together with ground-based fast photometry, spectroscopy, and radial-velocity measurements, we determine that the primary is a DA-type WD with mass M₁ = 0.47 ± 0.11M_⊙, radius R₁ = 0.0197 ± 0.0035 R_⊙, and cooling age t₁ = 52 ± 36 Myr. No lines are detected, to within our sensitivity, from the secondary WD, but it is likely also of type DA. Its central surface brightness, as measured from the secondary eclipse, is 0.31 of the primary's surface brightness. Its mass, radius, and cooling age, respectively, are M₂ = 0.44 ± 0.09M_⊙, R₂ = 0.0223^+0.0064 _-0.0050 R_⊙, and t₂ = 230 ± 100 Myr. SDSS J1152+0248 is a near twin of the double-lined eclipsing WD system CSS 41177.

Original language	English
Pages (from-to)	845-854
Number of pages	10
Journal	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume	458
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stw364
State	Published - 22 Feb 2016

Keywords

Binaries: eclipsing
Methods: statistical
Stars: individual: SDSS J115219.99+024814.4
Techniques: radial velocities
White dwarfs

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/stw364

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Hallakoun, N., Maoz, D., Kilic, M., Mazeh, T., Gianninas, A., Agol, E., Bell, K. J., Bloemen, S., Brown, W. R., Debes, J., Faigler, S., Kull, I., Kupfer, T., Loeb, A., Morris, B. M., & Mullally, F. (2016). SDSS J1152+0248: An eclipsing double white dwarf from the Kepler K2 campaign. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 458(1), 845-854. https://doi.org/10.1093/mnras/stw364

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title = "SDSS J1152+0248: An eclipsing double white dwarf from the Kepler K2 campaign",

abstract = "We report the discovery of the sixth known eclipsing double white dwarf (WD) system, SDSS J1152+0248, with a 2.3968 ± 0.0003 h orbital period, in data from the Kepler Mission's K2 continuation. Analysing and modelling the K2 data together with ground-based fast photometry, spectroscopy, and radial-velocity measurements, we determine that the primary is a DA-type WD with mass M1 = 0.47 ± 0.11M⊙, radius R1 = 0.0197 ± 0.0035 R⊙, and cooling age t1 = 52 ± 36 Myr. No lines are detected, to within our sensitivity, from the secondary WD, but it is likely also of type DA. Its central surface brightness, as measured from the secondary eclipse, is 0.31 of the primary's surface brightness. Its mass, radius, and cooling age, respectively, are M2 = 0.44 ± 0.09M⊙, R2 = 0.0223+0.0064 -0.0050 R⊙, and t2 = 230 ± 100 Myr. SDSS J1152+0248 is a near twin of the double-lined eclipsing WD system CSS 41177.",

keywords = "Binaries: eclipsing, Methods: statistical, Stars: individual: SDSS J115219.99+024814.4, Techniques: radial velocities, White dwarfs",

author = "N. Hallakoun and D. Maoz and M. Kilic and T. Mazeh and A. Gianninas and E. Agol and Bell, \{K. J.\} and S. Bloemen and Brown, \{W. R.\} and J. Debes and S. Faigler and I. Kull and T. Kupfer and A. Loeb and Morris, \{B. M.\} and F. Mullally",

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month = feb,

day = "22",

doi = "10.1093/mnras/stw364",

language = "الإنجليزيّة",

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Hallakoun, N, Maoz, D, Kilic, M, Mazeh, T, Gianninas, A, Agol, E, Bell, KJ, Bloemen, S, Brown, WR, Debes, J, Faigler, S, Kull, I, Kupfer, T, Loeb, A, Morris, BM & Mullally, F 2016, 'SDSS J1152+0248: An eclipsing double white dwarf from the Kepler K2 campaign', MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 458, no. 1, pp. 845-854. https://doi.org/10.1093/mnras/stw364

TY - JOUR

T1 - SDSS J1152+0248

T2 - An eclipsing double white dwarf from the Kepler K2 campaign

AU - Hallakoun, N.

AU - Maoz, D.

AU - Kilic, M.

AU - Mazeh, T.

AU - Gianninas, A.

AU - Agol, E.

AU - Bell, K. J.

AU - Bloemen, S.

AU - Brown, W. R.

AU - Debes, J.

AU - Faigler, S.

AU - Kull, I.

AU - Kupfer, T.

AU - Loeb, A.

AU - Morris, B. M.

AU - Mullally, F.

PY - 2016/2/22

Y1 - 2016/2/22

N2 - We report the discovery of the sixth known eclipsing double white dwarf (WD) system, SDSS J1152+0248, with a 2.3968 ± 0.0003 h orbital period, in data from the Kepler Mission's K2 continuation. Analysing and modelling the K2 data together with ground-based fast photometry, spectroscopy, and radial-velocity measurements, we determine that the primary is a DA-type WD with mass M1 = 0.47 ± 0.11M⊙, radius R1 = 0.0197 ± 0.0035 R⊙, and cooling age t1 = 52 ± 36 Myr. No lines are detected, to within our sensitivity, from the secondary WD, but it is likely also of type DA. Its central surface brightness, as measured from the secondary eclipse, is 0.31 of the primary's surface brightness. Its mass, radius, and cooling age, respectively, are M2 = 0.44 ± 0.09M⊙, R2 = 0.0223+0.0064 -0.0050 R⊙, and t2 = 230 ± 100 Myr. SDSS J1152+0248 is a near twin of the double-lined eclipsing WD system CSS 41177.

AB - We report the discovery of the sixth known eclipsing double white dwarf (WD) system, SDSS J1152+0248, with a 2.3968 ± 0.0003 h orbital period, in data from the Kepler Mission's K2 continuation. Analysing and modelling the K2 data together with ground-based fast photometry, spectroscopy, and radial-velocity measurements, we determine that the primary is a DA-type WD with mass M1 = 0.47 ± 0.11M⊙, radius R1 = 0.0197 ± 0.0035 R⊙, and cooling age t1 = 52 ± 36 Myr. No lines are detected, to within our sensitivity, from the secondary WD, but it is likely also of type DA. Its central surface brightness, as measured from the secondary eclipse, is 0.31 of the primary's surface brightness. Its mass, radius, and cooling age, respectively, are M2 = 0.44 ± 0.09M⊙, R2 = 0.0223+0.0064 -0.0050 R⊙, and t2 = 230 ± 100 Myr. SDSS J1152+0248 is a near twin of the double-lined eclipsing WD system CSS 41177.

KW - Binaries: eclipsing

KW - Methods: statistical

KW - Stars: individual: SDSS J115219.99+024814.4

KW - Techniques: radial velocities

KW - White dwarfs

UR - http://www.scopus.com/inward/record.url?scp=84963725221&partnerID=8YFLogxK

U2 - 10.1093/mnras/stw364

DO - 10.1093/mnras/stw364

M3 - مقالة

SN - 0035-8711

VL - 458

SP - 845

EP - 854

JO - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

IS - 1

ER -

SDSS J1152+0248: An eclipsing double white dwarf from the Kepler K2 campaign

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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