Gould, Andrew, Dong, Subo, Bennett, David P., Bond, Ian A., Udalski, Andrzej, Kozlowski, Szymon
At present, microlensing light curves from different telescopes and filters are photometrically aligned by fitting them to a common model. We present a second method based on photometry of common...
Chemical Composition of Faint (I~21 mag) Microlensed Bulge Dwarf OGLE-2007-BLG-514S (2009)
Epstein, Courtney R., Johnson, Jennifer A., Dong, Subo, Udalski, Andrzej, Gould, Andrew, Becker, George
We present a high-resolution spectrum of a microlensed G dwarf in the Galactic bulge with spectroscopic temperature T_eff = 5600 +/- 180 K. This I~21 mag star was magnified by a factor ranging from...
OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion? (2009)
Dong, Subo, Gould, Andrew, Udalski, Andrzej, Anderson, Jay, Christie, G. W., Gaudi, B. S., ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
Behind the Scenes of the Discovery of Two Extrasolar Planets: ESO Large Programme 666 (2008)
Minniti, Dante, Naef, Claudio, Udalski, Andrzej, Pont, Frédéric, Moutou, Claire, Santos, Nuno, ...
This is the story of the Large Programme 666, dedicated to discover sub-stellar objects (extrasolar planets and brown dwarfs), and to measure their masses, radii, and mean densities. We hunt selected...
OGLE-2005-BLG-071Lb, the Most Massive M-Dwarf Planetary Companion? (2008)
Dong, Subo, Gould, Andrew, Udalski, Andrzej, Anderson, Jay, Christie, G. W., Gaudi, B. S., ...
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include...
Hoyer, Sergio, Alegria, Sebastian Ramirez, Ivanov, Valentin D., Minniti, Dante, Pietrzynski, Grzegorz, Ruiz, Maria Teresa, ...
We present precise new V, I, and K-band photometry for the planetary transit candidate star OGLE-TR-82. Good seeing V-band images acquired with VIMOS instrument at ESO VLT allowed us to measure...
Pont, Frederic, Moutou, Claire, Gillon, Michael, Udalski, Andrzej, Bouchy, Francois, Fernandes, Joao, ...
Transiting planets are essential to study the structure and evolution of extra-solar planets. For that purpose, it is important to measure precisely the radius of these planets. Here we report new...
A High-Resolution Spectrum of the Extremely Metal-rich Bulge G Dwarf OGLE-2006-BLG-265 (2007)
Johnson, Jennifer A., Gal-Yam, Avishay, Leonard, Douglas C., Simon, Joshua D., Udalski, Andrzej, Gould, Andrew
We present an R = 45,000 Keck spectrum of the microlensed Galactic bulge G dwarf OGLE-2006-BLG-265, which has high (~60) signal-to-noise ratio despite its short (15 minute) exposure time, because the...
Díaz, Rodrigo F., Ramírez, Sebastián, Fernández, José Miguel, Gallardo, José, Gieren, Wolfgang, Ivanov, Valentin D., ...
We present precise V and Ks-band transit photometry for the planetary host star OGLE-TR-113. Using the Ks-band photometry, we confirm the dwarf nature of OGLE-TR-113, and obtain new estimates for its...
Minniti, Dante, Fernández, José Miguel, Díaz, Rodrigo F., Udalski, Andrzej, Pietrzynski, Grzegorz, Gieren, Wolfgang, ...
We present accurate V-band photometry for a planetary transit of OGLE-TR-111 acquired with VIMOS at the ESO Very Large Telescope. The measurement of this transit allows to refine the planetary...
Pont, Frederic, Moutou, Claire, Gillon, Michael, Udalski, Andrzej, Bouchy, Francois, Fernandes, Joao, ...
Transiting planets are essential to study the structure and evolution of extra-solar planets. For that purpose, it is important to measure precisely the radius of these planets. Here we report new...
A High-Resolution Spectrum of the Extremely Metal-Rich Bulge G-Dwarf OGLE-2006-BLG-265 (2006)
Johnson, Jennifer A., Gal-Yam, Avishay, Leonard, Douglas C., Simon, Joshua D., Udalski, Andrzej, Gould, Andrew
We present an R=45,000 Keck spectrum of the microlensed Galactic bulge G-dwarf OGLE-2006-BLG-265, which has a high (~60) signal-to-noise ratio despite its short (15 min) exposure time because the...
Millimagnitude optical photometry for the transiting planetary candidate OGLE-TR-109 (2006)
Fernández, José Miguel, Minniti, Dante, Pietrzynski, Grzegorz, Gieren, Wolfgang, Ruiz, María Teresa, Zoccali, Manuela, ...
We present precise V-band photometry for the low-amplitude transit candidate star OGLE-TR-109. This is an extreme case among the transiting candidates found by the OGLE group because of the early...
Identification of the OGLE-2003-BLG-235/MOA-2003-BLG-53 Planetary Host Star (2006)
Bennett, David P., Anderson, Jay, Bond, Ian A., Udalski, Andrzej, Gould, Andrew
We present the results of HST observations of the host star for the first definitive extrasolar planet detected by microlensing. The light curve model for this event predicts that the lens star...
Millimagnitude Optical Photometry for the Transiting Planetary Candidate OGLE-TR-109 (2006)
Fernandez, Jose Miguel, Minniti, Dante, Pietrzynski, Grzegorz, Gieren, Wolfgang, Ruiz, Maria Teresa, Zoccali, Manuela, ...
We present precise V-band photometry for the low-amplitude transit candidate star OGLE-TR-109. This is an extreme case among the transiting candidates found by the OGLE group because of the early...
Gould, Andrew, Dorsher, Susan, Gaudi, B. Scott, Udalski, Andrzej
We derive the frequencies of hot Jupiters (HJs) with 3--5 day periods and very hot Jupiters (VHJs) with 1-3 day periods by comparing the planets actually detected in the OGLE-III survey with those...
Gould, Andrew, Dorsher, Susan, Gaudi, B. Scott, Udalski, Andrzej
We derive the frequencies of hot Jupiters (HJs) with 3--5 day periods and very hot Jupiters (VHJs) with 1-3 day periods by comparing the planets actually detected in the OGLE-III survey with those...
Gould, Andrew, Dorsher, Susan, Gaudi, B. Scott, Udalski, Andrzej
We derive the frequencies of hot Jupiters (HJs) with 3--5 day periods and very hot Jupiters (VHJs) with 1-3 day periods by comparing the planets actually detected in the OGLE-III survey with those...
Systematic Analysis of 22 Microlensing Parallax Candidates (2005)
Poindexter, Shawn, Afonso, Cristina, Bennett, David P., Glicenstein, Jean-Francois, Gould, Andrew, Szymanski, Michal K., ...
We attempt to identify all microlensing parallax events for which the parallax fit improves \Delta\chi^2 > 100 relative to a standard microlensing model. We outline a procedure to identify three...
An algorithm to detect blends with eclipsing binaries in planet transit searches (2005)
Hoekstra, Henk, Wu, Yanqin, Udalski, Andrzej
We present an algorithm that can detect blends of bright stars with fainter, un-associated eclipsing binaries. Such systems contaminate searches for transiting planets, in particular in crowded...
Systematic analysis of 22 microlensing parallax candidates (2005)
Poindexter, Shawn, Afonso, Cristina, Bennett, David P., Glicenstein, Jean-Francois, Gould, Andrew, Szymanski, Michal K., ...
We attempt to identify all microlensing parallax events for which the parallax fit improves Deltachi2>100 relative to a standard microlensing model. We outline a procedure to identify three types of...
A transiting extrasolar giant planet around the star OGLE-TR-113 (2004)
Konacki, Maciej, Torres, Guillermo, Sasselov, Dimitar D., Pietrzynski, Grzegorz, Udalski, Andrzej, Jha, Saurabh, ...
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...
Fundamental Properties and Distances of LMC Eclipsing Binaries: III. EROS 1044 (2002)
Ribas, Ignasi, Fitzpatrick, Edward L., Maloney, Frank P., Guinan, Edward F., Udalski, Andrzej
We present results from a detailed analysis of a third eclipsing binary (EB) system in the Large Magellanic Cloud, EROS 1044 (~B2 IV-V + ~B2 III-IV). Our study combines the "classical" EB study of...