期刊
ASTRONOMY & ASTROPHYSICS
卷 624, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201833669
关键词
binaries: eclipsing; planets and satellites: detection; techniques: radial velocities; techniques: photometric; stars: statistics; stars: low-mass
资金
- Swiss National Science Foundation (SNSF)
- SNSF
- University of Chicago
- Universite de Geneve
- University of Toronto
- University of Cambridge
- UK Science and Technology Facilities Council [ST/M001040/1]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [803193/BEBOP]
- National Aeronautics and Space Administration
- National Science Foundation
- Naval Observatory Merged Astrometric Dataset (NOMAD)
- US Naval Observatory
- STFC [ST/P000495/1] Funding Source: UKRI
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 M-Jup, and our median sensitivity is 0.4 M-Jup. 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 similar to 10 degrees.
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