Absolute densities, masses, and radii of the WASP-47 system determined dynamically
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 derivin...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00046361_v595_n_p_Almenara |
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todo:paper_00046361_v595_n_p_Almenara2023-10-03T14:01:01Z Absolute densities, masses, and radii of the WASP-47 system determined dynamically Almenara, J.M. Diáz, R.F. Bonfils, X. Udry, S. Planetary systems Stars: individual: WASP-47 Techniques: photometric Techniques: radial velocities Stars Velocity Absolute density Gravitational interaction Joint analysis Planetary system Radial velocity datum Stars: individual Techniques: photometric Techniques: radial velocities Gravitation 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. © 2016 ESO. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v595_n_p_Almenara |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Planetary systems Stars: individual: WASP-47 Techniques: photometric Techniques: radial velocities Stars Velocity Absolute density Gravitational interaction Joint analysis Planetary system Radial velocity datum Stars: individual Techniques: photometric Techniques: radial velocities Gravitation |
| spellingShingle |
Planetary systems Stars: individual: WASP-47 Techniques: photometric Techniques: radial velocities Stars Velocity Absolute density Gravitational interaction Joint analysis Planetary system Radial velocity datum Stars: individual Techniques: photometric Techniques: radial velocities Gravitation Almenara, J.M. Diáz, R.F. Bonfils, X. Udry, S. Absolute densities, masses, and radii of the WASP-47 system determined dynamically |
| topic_facet |
Planetary systems Stars: individual: WASP-47 Techniques: photometric Techniques: radial velocities Stars Velocity Absolute density Gravitational interaction Joint analysis Planetary system Radial velocity datum Stars: individual Techniques: photometric Techniques: radial velocities Gravitation |
| description |
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. © 2016 ESO. |
| format |
JOUR |
| author |
Almenara, J.M. Diáz, R.F. Bonfils, X. Udry, S. |
| author_facet |
Almenara, J.M. Diáz, R.F. Bonfils, X. Udry, S. |
| author_sort |
Almenara, J.M. |
| title |
Absolute densities, masses, and radii of the WASP-47 system determined dynamically |
| title_short |
Absolute densities, masses, and radii of the WASP-47 system determined dynamically |
| title_full |
Absolute densities, masses, and radii of the WASP-47 system determined dynamically |
| title_fullStr |
Absolute densities, masses, and radii of the WASP-47 system determined dynamically |
| title_full_unstemmed |
Absolute densities, masses, and radii of the WASP-47 system determined dynamically |
| title_sort |
absolute densities, masses, and radii of the wasp-47 system determined dynamically |
| url |
http://hdl.handle.net/20.500.12110/paper_00046361_v595_n_p_Almenara |
| work_keys_str_mv |
AT almenarajm absolutedensitiesmassesandradiiofthewasp47systemdetermineddynamically AT diazrf absolutedensitiesmassesandradiiofthewasp47systemdetermineddynamically AT bonfilsx absolutedensitiesmassesandradiiofthewasp47systemdetermineddynamically AT udrys absolutedensitiesmassesandradiiofthewasp47systemdetermineddynamically |
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