The SDSS-het survey of Kepler eclipsing binaries: Spectroscopic dynamical masses of the Kepler-16 circumbinary planet hosts

Chad F. Bender; Suvrath Mahadevan; Rohit Deshpande; Jason T. Wright; Arpita Roy; Ryan C. Terrien; Steinn Sigurdsson; Lawrence W. Ramsey; Donald P. Schneider; Scott W. Fleming

doi:10.1088/2041-8205/751/2/L31

The SDSS-het survey of Kepler eclipsing binaries: Spectroscopic dynamical masses of the Kepler-16 circumbinary planet hosts

Chad F. Bender, Suvrath Mahadevan, Rohit Deshpande, Jason T. Wright, Arpita Roy, Ryan C. Terrien, Steinn Sigurdsson, Lawrence W. Ramsey, Donald P. Schneider, Scott W. Fleming

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Abstract

We have used high-resolution spectroscopy to observe the Kepler-16 eclipsing binary as a double-lined system and measure precise radial velocities for both stellar components. These velocities yield a dynamical mass ratio of q = 0.2994 ± 0.0031. When combined with the inclination,i=903401 ^+0.0016-0.0019 measured from the Kepler photometric data by Doyle et al.(D11), we derive dynamical masses for the Kepler-16 components of M _A=0.654 ± 0.017 M and M_B = 0.1959 ± 0.0031 M , a precision of 2.5% and 1.5%, respectively. Our results confirm at the 2% level the mass-ratio derived by D11 with their photometric-dynamical model (PDM), q=0.2937 ± 0.0006. These are among the most precise spectroscopic dynamical masses ever measured for low-mass stars and provide an important direct test of the results from the PDM technique.

Original language	English (US)
Article number	L31
Journal	Astrophysical Journal Letters
Volume	751
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/751/2/L31
State	Published - Jun 1 2012

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Bender, C. F., Mahadevan, S., Deshpande, R., Wright, J. T., Roy, A., Terrien, R. C., Sigurdsson, S., Ramsey, L. W., Schneider, D. P., & Fleming, S. W. (2012). The SDSS-het survey of Kepler eclipsing binaries: Spectroscopic dynamical masses of the Kepler-16 circumbinary planet hosts. Astrophysical Journal Letters, 751(2), Article L31. https://doi.org/10.1088/2041-8205/751/2/L31

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title = "The SDSS-het survey of Kepler eclipsing binaries: Spectroscopic dynamical masses of the Kepler-16 circumbinary planet hosts",

abstract = "We have used high-resolution spectroscopy to observe the Kepler-16 eclipsing binary as a double-lined system and measure precise radial velocities for both stellar components. These velocities yield a dynamical mass ratio of q = 0.2994 ± 0.0031. When combined with the inclination,i=903401 +0.0016-0.0019 measured from the Kepler photometric data by Doyle et al.(D11), we derive dynamical masses for the Kepler-16 components of M A=0.654 ± 0.017 M and MB = 0.1959 ± 0.0031 M , a precision of 2.5% and 1.5%, respectively. Our results confirm at the 2% level the mass-ratio derived by D11 with their photometric-dynamical model (PDM), q=0.2937 ± 0.0006. These are among the most precise spectroscopic dynamical masses ever measured for low-mass stars and provide an important direct test of the results from the PDM technique.",

author = "Bender, {Chad F.} and Suvrath Mahadevan and Rohit Deshpande and Wright, {Jason T.} and Arpita Roy and Terrien, {Ryan C.} and Steinn Sigurdsson and Ramsey, {Lawrence W.} and Schneider, {Donald P.} and Fleming, {Scott W.}",

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doi = "10.1088/2041-8205/751/2/L31",

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AU - Bender, Chad F.

AU - Mahadevan, Suvrath

AU - Deshpande, Rohit

AU - Wright, Jason T.

AU - Roy, Arpita

AU - Terrien, Ryan C.

AU - Sigurdsson, Steinn

AU - Ramsey, Lawrence W.

AU - Schneider, Donald P.

AU - Fleming, Scott W.

PY - 2012/6/1

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N2 - We have used high-resolution spectroscopy to observe the Kepler-16 eclipsing binary as a double-lined system and measure precise radial velocities for both stellar components. These velocities yield a dynamical mass ratio of q = 0.2994 ± 0.0031. When combined with the inclination,i=903401 +0.0016-0.0019 measured from the Kepler photometric data by Doyle et al.(D11), we derive dynamical masses for the Kepler-16 components of M A=0.654 ± 0.017 M and MB = 0.1959 ± 0.0031 M , a precision of 2.5% and 1.5%, respectively. Our results confirm at the 2% level the mass-ratio derived by D11 with their photometric-dynamical model (PDM), q=0.2937 ± 0.0006. These are among the most precise spectroscopic dynamical masses ever measured for low-mass stars and provide an important direct test of the results from the PDM technique.

AB - We have used high-resolution spectroscopy to observe the Kepler-16 eclipsing binary as a double-lined system and measure precise radial velocities for both stellar components. These velocities yield a dynamical mass ratio of q = 0.2994 ± 0.0031. When combined with the inclination,i=903401 +0.0016-0.0019 measured from the Kepler photometric data by Doyle et al.(D11), we derive dynamical masses for the Kepler-16 components of M A=0.654 ± 0.017 M and MB = 0.1959 ± 0.0031 M , a precision of 2.5% and 1.5%, respectively. Our results confirm at the 2% level the mass-ratio derived by D11 with their photometric-dynamical model (PDM), q=0.2937 ± 0.0006. These are among the most precise spectroscopic dynamical masses ever measured for low-mass stars and provide an important direct test of the results from the PDM technique.

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The SDSS-het survey of Kepler eclipsing binaries: Spectroscopic dynamical masses of the Kepler-16 circumbinary planet hosts

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