Query : 2006A&A...450.1231G

2006A&A...450.1231G - Astronomy and Astrophysics, volume 450, 1231-1237 (2006/5-2)

Equations for the analysis of the light curves of extra-solar planetary transits.


Abstract (from CDS):

Easy to use analytical formulae are presented for the computation the of light curves of extra-solar planetary transits. The equations are a function of the fractional radii of the planet and the parent star, the inclination of the orbit, and the limb-darkening coefficients of the star. Light curves can be solved for these parameters depending on the precision of the available observations. When the radial velocity curve is also available, as is normally the case to ensure the nature of the system, the masses, radii, and average density of both the star and the planet can be determined. The equations are valid for any degree of limb darkening, as well as for any type of transit. The cases of eccentric orbits, third light, or a non-zero relative luminosity of the planet can be easily taken into account. The basic assumption is that the projections of both the star and the planet on the plane of the sky are well represented by circular discs. The effects in case this assumption is not valid are also discussed. Practical applications are shown, beginning with the light curve of the photometrically discovered planet OGLE-TR-113, obtained with a ground-based telescope. As a second example, results are shown from the study of the light curve obtained for the transit of the giant planet in HD 209458 with the Hubble Space Telescope. Procedures to get the best fit parameters are briefly discussed.

Abstract Copyright:

Journal keyword(s): techniques: photometric - stars: binaries: eclipsing - stars: planetary systems

Errata: erratum vol. 474, p. 1049 (2007)

Simbad objects: 3

goto Full paper

goto View the references in ADS

Number of rows : 3
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 NAME OGLE-TR-113b Pl 10 52 24.2808297652 -61 26 48.845891762           ~ 115 1
2 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1070 1
3 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1743 1

To bookmark this query, right click on this link: simbad:objects in 2006A&A...450.1231G and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact