A Possible New Transiting Planet
Abstract
Recently, 59 low-luminosity object transits were reported from the Optical Gravitational Lensing Experiment (OGLE). Our follow-up low-resolution spectroscopy of 16 candidates provided two objects, OGLE-TR-3 and OGLE-TR-10, which have companions with radii compatible with those of gas-giant planets. Further high-resolution spectroscopy revealed a very low velocity variation (<500m/s) of the host star OGLE-TR-3 which may be caused by its unseen companion. An analysis of the radial velocity and light curve results in M<2.5 M_jup, R<1.6 R_jup, and an orbital separation of about 5 R_sol, which makes it the planet with the shortest period known. This allows to identify the low-luminosity companion of OGLE-TR-3 as a possible new gas-giant planet. If confirmed, this makes OGLE-TR-3 together with OGLE-TR-56 the first extrasolar planets detected via their transit light curves.
Cite
@article{arxiv.astro-ph/0303183,
title = {A Possible New Transiting Planet},
author = {S. Dreizler and P. Hauschildt and W. Kley and T. Rauch and S. L. Schuh and K. Werner and B. Wolff},
journal= {arXiv preprint arXiv:astro-ph/0303183},
year = {2009}
}
Comments
9 pages, 12 figures, A&A in press