Physical Properties of the Transiting Planetary System TrES-3

Details Physical Properties of the Transiting Planetary System TrES-3 Physical Properties of the Transiting Planetary System TrES-3

2010-11-25

arxiv.org/abs/1011.5595v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

15 pages, including 4 figures and 4 tables, accepted for publication in PASJ

Scientific paper

We present four new transits of the planetary system TrES-3 observed between 2009 May and 2010 June. Among these, the third transit by itself indicates possible evidence for brightness disturbance, which might be the result of the planet blocking a cool starspot on the stellar surface. A total of 109 transit times, including our measurements, were used to determine the improved ephemeris with a transit epoch of 2454185.910944$\pm$0.000072 HJED and an orbital period of 1.30618700$\pm$0.00000015 d. We analyzed the transit light curves using the JKTEBOP code and adopting the quadratic limb-darkening law. In order to derive the physical properties of the TrES-3 system, the transit parameters are combined with the empirical relations from eclipsing binary stars and stellar evolutionary models. The stellar mass and radius obtained from a calibration using $T_A$, log $\rho_{\rm A}$ and [Fe/H] are consistent with those from the isochrone analysis. We found that the exoplanet TrES-3b has a mass of 1.93$\pm$0.07 M$_{\rm Jup}$, a radius of 1.30$\pm$0.04 R$_{\rm Jup}$, a surface gravity of log $g_{\rm b}$=3.45$\pm$0.02, a density of 0.82$\pm$0.06 $\rho_{\rm Jup}$, and an equilibrium temperature of 1641$\pm$23 K. The results are in good agreement with theoretical models for gas giant planets.

Affiliated with

Also associated with

No associations

Rating

Physical Properties of the Transiting Planetary System TrES-3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Physical Properties of the Transiting Planetary System TrES-3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Physical Properties of the Transiting Planetary System TrES-3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-587761