APOSTLE: 11 TRANSIT OBSERVATIONS OF TrES-3b

An analysis of the transit times of TrES-1b

The presence of a second planet in a known, transiting-planet system will cause the time between transits to vary. These variations can be used to constrain the orbital elements and mass of the perturbing planet. We analyse the set of transit times of the TrES-1 system given in Charbonneau et al. (2005). We find no convincing evidence for a second planet in the TrES-1 system from that data. By ...

Detection Limits in Space-Based Transit Observations

Multicolor Observations of a Planetary Transit of Hd 209458

We present BV RIZ photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6m and 2.2m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color due primarily to the color-dependent limb-darkening of the star, but potentially due as well t...

High-resolution Observations of Psr B1828−11

We present high-time-resolution observations of the young precessing pulsar B1828−11, which yield clues to the true beam shape and the fundamental precession period.

The Impact of Transit Observations on Planetary Physics

We highlight the importance of transit observations on understanding the physics of planetary atmospheres and interiors. Transmission spectra and emission spectra of atmospheres allow us to characterize these exotic atmospheres, which possess TiO, VO, H2O, CO, Na, and K, as principal absorbers. We calculate mass-radius relations for water-rock-iron and gas giant planets and examine these relati...