2016A&A...595L...5A


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.10CEST10:26:47

2016A&A...595L...5A - Astronomy and Astrophysics, volume 595, L5-5 (2016/11-1)

Absolute densities, masses, and radii of the WASP-47 system determined dynamically.

ALMENARA J.M., DIAZ R.F., BONFILS X. and UDRY S.

Abstract (from CDS):

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.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: individual: WASP-47 - planetary systems - techniques: photometric - techniques: radial velocities

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 WASP-47 * 22 04 48.7262032385 -12 01 08.000987005     11.99 11.82   ~ 109 1
2 WASP-47e Pl 22 04 48.7262032385 -12 01 08.000987005           ~ 44 0
3 WASP-47c Pl 22 04 48.7262032385 -12 01 08.000987005           ~ 19 0
4 WASP-47b Pl 22 04 48.7262032385 -12 01 08.000987005           ~ 66 1

    Equat.    Gal    SGal    Ecl

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2021.05.10-10:26:47

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