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dc.contributor.author
Almenara, J. M.
dc.contributor.author
Diaz, Rodrigo Fernando
dc.contributor.author
Bonfils, X.
dc.contributor.author
Udry, S.
dc.date.available
2017-06-13T19:23:33Z
dc.date.issued
2016-10
dc.identifier.citation
Almenara, J. M.; Diaz, Rodrigo Fernando; Bonfils, X.; Udry, S.; Absolute densities, masses, and radii of the WASP-47 system determined dynamically; Edp Sciences; Astronomy And Astrophysics; 595; L5; 10-2016; 1-12
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/18125
dc.description.abstract
We present a self-consistent modelling of the available light curve and radial velocity data of WASP-47 that takes into account the gravitational interactions between all known bodies in the system. The joint analysis of light curve and radial velocity data in a multi-planetary system allows deriving absolute densities, radii, and masses without the use of theoretical stellar models. For WASP-47 the precision is limited by the reduced dynamical information that is due to the short time span of the K2 light curve. We achieve a precision of around 22% for the radii of the star and the transiting planets, between 40% and 60% for their masses, and between 1.5% and 38% for their densities. All values agree with previously reported measurements. When theoretical stellar models are included, the system parameters are determined with a precision that exceeds that achieved by previous studies, thanks to the self-consistent modelling of light curve and radial velocity data.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Edp Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Stars: Individual: Wasp-47
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Planetary Systems
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Techniques: Photometric
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Techniques: Radial Velocities
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Absolute densities, masses, and radii of the WASP-47 system determined dynamically
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-13T14:14:49Z
dc.journal.volume
595
dc.journal.number
L5
dc.journal.pagination
1-12
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Almenara, J. M.. Université de Genève; Suiza
dc.description.fil
Fil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Bonfils, X.. Université Grenoble Alpes; Francia
dc.description.fil
Fil: Udry, S.. Université de Genève; Suiza
dc.journal.title
Astronomy And Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201629770
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info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1610.09533
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/ark/https://www.aanda.org/articles/aa/abs/2016/11/aa29770-16/aa29770-16.html
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