TY - JOUR
T1 - The transiting extrasolar giant planet around the star OGLE-TR-113
AU - Konacki, Maciej
AU - Torres, Guillermo
AU - Sasselov, Dimitar D.
AU - Pietrzyński, Grzegorz
AU - Udalski, Andrzej
AU - Jha, Saurabh
AU - Ruiz, Maria Teresa
AU - Gieren, Wolfgang
AU - Minniti, Dante
N1 - Funding Information:
M. K. acknowledges partial support by the Polish Committee for Scientific Research, grant 2P03D 001 22. G. T. acknowledges support for this work from NASA’s Kepler mission, STScI program GO-9805.02-A, and the Keck PI Data Analysis Fund (JPL 1257943). A. U. was partly supported by the Polish KBN grant 2P03D02124 and the grant “Subsydium Profesor-skie” of the Foundation for Polish Science. G. P., M. T. R., W. G., and D. M. gratefully acknowledge support for this research from the Chilean Center for Astrophysics FONDAP 15010003. S. J. thanks the Miller Institute for Basic Research in Science at UC Berkeley for support through a research fellowship. We are grateful for a generous telescope time allocation and support at the Las Campanas Observatory. This research has made use of NASA’s Astrophysics Data System Abstract Service.
Funding Information:
8IRAF is distributed by the National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.
PY - 2004/7/1
Y1 - 2004/7/1
N2 - We report the independent discovery of a new extrasolar transiting planet around OGLE-TR-113, a candidate star from the Optical Gravitational Lensing Experiment. Small radial velocity variations have been detected based on observations conducted with the MIKE spectrograph on the Magellan I (Baade) telescope at the Las Campanas Observatory (Chile) during 2003. We have also carried out a light-curve analysis incorporating new photometry and realistic physical parameters for the star. OGLE-TR-113b has an orbital period of only 1.43 days, a mass of (1.08 ± 0.28)MJup, and a radius of (1.09 ± 0.10)RJup. Similar parameters have been obtained very recently in an independent study by Bouchy et al., from observations taken a year later. The orbital period of OGLE-TR-113b and the previously announced planet OGLE-TR-56b (Porb = 1.21 days) - the first two found photometrically - are much shorter than the apparent cutoff of close-in giant planets at 3-4 day periods found in high-precision radial velocity surveys. Along with a third case reported by Bouchy et al. (OGLE-TR-132b, Porb = 1.69 days), these objects appear to form a new class of "very hot Jupiters" that pose very interesting questions for theoretical study.
AB - We report the independent discovery of a new extrasolar transiting planet around OGLE-TR-113, a candidate star from the Optical Gravitational Lensing Experiment. Small radial velocity variations have been detected based on observations conducted with the MIKE spectrograph on the Magellan I (Baade) telescope at the Las Campanas Observatory (Chile) during 2003. We have also carried out a light-curve analysis incorporating new photometry and realistic physical parameters for the star. OGLE-TR-113b has an orbital period of only 1.43 days, a mass of (1.08 ± 0.28)MJup, and a radius of (1.09 ± 0.10)RJup. Similar parameters have been obtained very recently in an independent study by Bouchy et al., from observations taken a year later. The orbital period of OGLE-TR-113b and the previously announced planet OGLE-TR-56b (Porb = 1.21 days) - the first two found photometrically - are much shorter than the apparent cutoff of close-in giant planets at 3-4 day periods found in high-precision radial velocity surveys. Along with a third case reported by Bouchy et al. (OGLE-TR-132b, Porb = 1.69 days), these objects appear to form a new class of "very hot Jupiters" that pose very interesting questions for theoretical study.
KW - Line: profiles
KW - Planetary systems
KW - Stars: evolution
KW - Stars: individual (OGLE-TR-113)
KW - Techniques: radial velocities
UR - http://www.scopus.com/inward/record.url?scp=3843138317&partnerID=8YFLogxK
U2 - 10.1086/422600
DO - 10.1086/422600
M3 - Article
AN - SCOPUS:3843138317
SN - 0004-637X
VL - 609
SP - L37-L40
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 II
ER -