Spectral Types of Planetary Host Star Candidates: Two New Transiting Planets?
Abstract
Recently, 46 low-luminosity object transits were reported from the Optical Gravitational Lensing Experiment. Our follow-up spectroscopy of the 16 most promising candidates provides a spectral classification of the primary. Together with the radius ratio from the transit measurements, we derived the radii of the low-luminosity companions. This allows to examine the possible sub-stellar nature of these objects. Fourteen of them can be clearly identified as low-mass stars. Two objects, OGLE-TR-03 and OGLE-TR-10 have companions with radii of 0.15 R_sun which is very similar to the radius of the transiting planet HD209458B. The planetary nature of these two objects should therefore be confirmed by dynamical mass determinations.
Cite
@article{arxiv.astro-ph/0207192,
title = {Spectral Types of Planetary Host Star Candidates: Two New Transiting Planets?},
author = {S. Dreizler and T. Rauch and P. Hauschildt and S. L. Schuh and W. Kley and K. Werner},
journal= {arXiv preprint arXiv:astro-ph/0207192},
year = {2009}
}
Comments
4 pages, 3 figures, accepted for publication by A&A Letters