Bibcode
Gallardo, J.; Silva, S.; Ramírez-Alegría, S.; Minniti, D.; Pietrukowicz, P.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 522, id.A4
Fecha de publicación:
11
2010
Revista
Número de citas
1
Número de citas referidas
0
Descripción
We present a second paper of a complete characterization of stars whose
low-depth transits were discovered by the OGLE-III campaign to select
the most promising candidates for spectroscopic confirmation. This paper
follows a similar analysis to one previously performed in Gallardo et
al. (2005, A&A, 431, 707). We present new optical and near-IR
photometry and derive physical parameters such as effective temperature
(Teff), distance (d), the stellar radii (R_ast), and the
companion radii (Rc). We selected eight M (2800 K ≤
Teff ≤ 3850 K) or K (3850 K ≤ Teff ≤ 5150
K) stellar objects as potential candidates to host exoplanets, even
though, considering the radii of their companions, only the stars
OGLE-TR-61, OGLE-TR-74, OGLE-TR-123, and OGLE-TR-173 are the most
promising M-type transit candidates to host planets. A confirmation of
the planetary nature of any of these objects would be extremely valuable
in providing a means of characterizing planets transiting M-type dwarfs
with effective temperatures down to only 2900 K.
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