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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 90.{sup 0}3401{sup +0.0016}{sub -0.0019}, measured from the Kepler photometric data by Doyle et al. (D11), we derive dynamical masses for the Kepler-16 components of M{sub A} = 0.654 {+-} 0.017 M{sub Sun} and M{sub B} = 0.1959 {+-} 0.0031 M{sub Sun }, a precision of 2.5% and 1.5%, respectively. Our results confirm at the {approx}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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:
22047790
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 751; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION SPECTROSCOPY; ACCURACY; ASTRONOMY; ASTROPHYSICS; BINARY STARS; ECLIPSE; EMISSION SPECTROSCOPY; INCLINATION; MASS; PHOTOMETRY; PLANETS; RADIAL VELOCITY; RESOLUTION

Citation Formats

Bender, Chad F, Mahadevan, Suvrath, Deshpande, Rohit, Wright, Jason T, Roy, Arpita, Terrien, Ryan C, Sigurdsson, Steinn, Ramsey, Lawrence W, Schneider, Donald P, and Fleming, Scott W., E-mail: cbender@psu.edu. THE SDSS-HET SURVEY OF KEPLER ECLIPSING BINARIES: SPECTROSCOPIC DYNAMICAL MASSES OF THE KEPLER-16 CIRCUMBINARY PLANET HOSTS. United States: N. p., 2012. Web. doi:10.1088/2041-8205/751/2/L31.
Bender, Chad F, Mahadevan, Suvrath, Deshpande, Rohit, Wright, Jason T, Roy, Arpita, Terrien, Ryan C, Sigurdsson, Steinn, Ramsey, Lawrence W, Schneider, Donald P, & Fleming, Scott W., E-mail: cbender@psu.edu. THE SDSS-HET SURVEY OF KEPLER ECLIPSING BINARIES: SPECTROSCOPIC DYNAMICAL MASSES OF THE KEPLER-16 CIRCUMBINARY PLANET HOSTS. United States. https://doi.org/10.1088/2041-8205/751/2/L31
Bender, Chad F, Mahadevan, Suvrath, Deshpande, Rohit, Wright, Jason T, Roy, Arpita, Terrien, Ryan C, Sigurdsson, Steinn, Ramsey, Lawrence W, Schneider, Donald P, and Fleming, Scott W., E-mail: cbender@psu.edu. 2012. "THE SDSS-HET SURVEY OF KEPLER ECLIPSING BINARIES: SPECTROSCOPIC DYNAMICAL MASSES OF THE KEPLER-16 CIRCUMBINARY PLANET HOSTS". United States. https://doi.org/10.1088/2041-8205/751/2/L31.
@article{osti_22047790,
title = {THE SDSS-HET SURVEY OF KEPLER ECLIPSING BINARIES: SPECTROSCOPIC DYNAMICAL MASSES OF THE KEPLER-16 CIRCUMBINARY PLANET HOSTS},
author = {Bender, Chad F and Mahadevan, Suvrath and Deshpande, Rohit and Wright, Jason T and Roy, Arpita and Terrien, Ryan C and Sigurdsson, Steinn and Ramsey, Lawrence W and Schneider, Donald P and Fleming, Scott W., E-mail: cbender@psu.edu},
abstractNote = {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 90.{sup 0}3401{sup +0.0016}{sub -0.0019}, measured from the Kepler photometric data by Doyle et al. (D11), we derive dynamical masses for the Kepler-16 components of M{sub A} = 0.654 {+-} 0.017 M{sub Sun} and M{sub B} = 0.1959 {+-} 0.0031 M{sub Sun }, a precision of 2.5% and 1.5%, respectively. Our results confirm at the {approx}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.},
doi = {10.1088/2041-8205/751/2/L31},
url = {https://www.osti.gov/biblio/22047790}, journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 751,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2012},
month = {Fri Jun 01 00:00:00 EDT 2012}
}