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  SPOTS: The Search for Planets Orbiting Two Stars. III. Complete sample and statistical analysis

Asensio-Torres, R., Janson, M., Bonavita, M., Desidera, S., Thalmann, C., Kuzuhara, M., et al. (2018). SPOTS: The Search for Planets Orbiting Two Stars. III. Complete sample and statistical analysis. Astronomy and Astrophysics, 619.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-CF30-C Version Permalink: https://hdl.handle.net/21.11116/0000-0005-CF31-B
Genre: Journal Article

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https://ui.adsabs.harvard.edu/abs/2018A&A...619A..43A (Any fulltext)
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 Creators:
Asensio-Torres, R.1, Author
Janson, M.1, Author
Bonavita, M.1, Author
Desidera, S.1, Author
Thalmann, C.1, Author
Kuzuhara, M.1, Author
Henning, Th.1, Author
Marzari, F.1, Author
Meyer, M. R.1, Author
Calissendorff, P.1, Author
Uyama, T.1, Author
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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Free keywords: instrumentation: high angular resolution binaries: general planets and satellites: gaseous planets astrometry brown dwarfs stars: imaging Astrophysics - Earth and Planetary Astrophysics
 Abstract: Binary stars constitute a large percentage of the stellar population, yet relatively little is known about the planetary systems orbiting them. Most constraints on circumbinary planets (CBPs) so far come from transit observations with the Kepler telescope, which is sensitive to close-in exoplanets but does not constrain planets on wider orbits. However, with continuous developments in high-contrast imaging techniques, this population can now be addressed through direct imaging. We present the full survey results of the Search for Planets Orbiting Two Stars (SPOTS) survey, which is the first direct imaging survey targeting CBPs. The SPOTS observational program comprises 62 tight binaries that are young and nearby, and thus suitable for direct imaging studies, with VLT/NaCo and VLT/SPHERE. Results from SPOTS include the resolved circumbinary disk around AK Sco, the discovery of a low-mass stellar companion in a triple packed system, the relative astrometry of up to 9 resolved binaries, and possible indications of non-background planetary-mass candidates around HIP 77911. We did not find any CBP within 300 AU, which implies a frequency upper limit on CBPs (1-15 MJup) of 6-10% between 30-300 AU. Coupling these observations with an archival dataset for a total of 163 stellar pairs, we find a best-fit CBP frequency of 1.9% (2-15 MJup) between 1 and 300

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 Dates: 2018
 Publication Status: Issued
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Title: Astronomy and Astrophysics
Source Genre: Journal
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Pages: - Volume / Issue: 619 Sequence Number: - Start / End Page: - Identifier: -