TY - JOUR
T1 - The BEBOP radial-velocity survey for circumbinary planets
T2 - I. Eight years of CORALIE observations of 47 single-line eclipsing binaries and abundance constraints on the masses of circumbinary planets
AU - Martin, David V.
AU - Triaud, Amaury H. M. J.
AU - Udry, Stephane
AU - Marmier, Maxime
AU - Maxted, Pierre F. L.
AU - Cameron, Andrew Collier
AU - Hellier, Coel
AU - Pepe, Francesco
AU - Pollacco, Don
AU - Segransan, Damien
AU - West, Richard
N1 - After second referee report at A&A, 17 pages of main text and 28 pages of appendix tables and figures
PY - 2019/4/11
Y1 - 2019/4/11
N2 - We introduce the BEBOP radial velocity survey for circumbinary planets. We initiated this survey using the CORALIE spectrograph on the Swiss Euler Telescope at La Silla, Chile. An intensive four-year observation campaign commenced in 2013, targeting 47 single-lined eclipsing binaries drawn from the EBLM survey for low mass eclipsing binaries. Our specific use of binaries with faint M dwarf companions avoids spectral contamination, providing observing conditions akin to single stars. By combining new BEBOP observations with existing ones from the EBLM programme, we report on the results of 1519 radial velocity measurements over timespans as long as eight years. For the best targets we are sensitive to planets down to 0.1 MJup, and our median sensitivity is 0.4 MJup. In this initial survey we do not detect any planetary mass companions. Nonetheless, we present the first constraints on the abundance of circumbinary companions, as a function of mass and period. A comparison of our results to Kepler’s detections indicates a dispersion of planetary orbital inclinations less than ~10°.
AB - We introduce the BEBOP radial velocity survey for circumbinary planets. We initiated this survey using the CORALIE spectrograph on the Swiss Euler Telescope at La Silla, Chile. An intensive four-year observation campaign commenced in 2013, targeting 47 single-lined eclipsing binaries drawn from the EBLM survey for low mass eclipsing binaries. Our specific use of binaries with faint M dwarf companions avoids spectral contamination, providing observing conditions akin to single stars. By combining new BEBOP observations with existing ones from the EBLM programme, we report on the results of 1519 radial velocity measurements over timespans as long as eight years. For the best targets we are sensitive to planets down to 0.1 MJup, and our median sensitivity is 0.4 MJup. In this initial survey we do not detect any planetary mass companions. Nonetheless, we present the first constraints on the abundance of circumbinary companions, as a function of mass and period. A comparison of our results to Kepler’s detections indicates a dispersion of planetary orbital inclinations less than ~10°.
KW - astro-ph.EP
KW - astro-ph.SR
KW - binaries: eclipsing
KW - planets and satellites: detection
KW - stars: low-mass
KW - stars: statistics
KW - techniques: photometric
KW - techniques: radial velocities
UR - http://www.scopus.com/inward/record.url?scp=85065027245&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/201833669
DO - 10.1051/0004-6361/201833669
M3 - Article
SN - 0004-6361
VL - 624
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A68
ER -