Bennett, D. P., Rhie, S. H., Nikolaev, S., Gaudi, B. S., Udalski, A., Gould, A., ...
We present a new analysis of the Jupiter+Saturn analog system, OGLE-2006-BLG-109Lb,c, which was the first double planet system discovered with the gravitational microlensing method. This is the only...
Batista, V., Dong, Subo, Gould, A., Beaulieu, J. P., Cassan, A., Christie, G. W., ...
We analyze OGLE-2007-BLG-050, a high magnification microlensing event (A ~ 432) whose peak occurred on 2 May, 2007, with pronounced finite-source and parallax effects. We compute planet detection...
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...
Galaxy Orientation and Alignment Effects in the SDSS DR6 (2009)
Siverd, R. J., Ryden, B. S., Gaudi, B. S.
We identify, categorize, and quantify alignment effects among host and satellite galaxies using a spectroscopically-confirmed, low-redshift (z
Detecting Transits of Planetary Companions to Giant Stars (2009)
Assef, R. J., Gaudi, B. S., Stanek, K. Z.
Of the approximately 350 extrasolar planets currently known, of order 10% orbit evolved stars with radii R >~ 2.5 R_sun. These planets are of particular interest because they tend to orbit more...
A Census of Exoplanets in Orbits Beyond 0.5 AU via Space-based Microlensing (2009)
Bennett, David P., Anderson, J., Bond, I., Cheng, E., Cook, K., ...
A space-based gravitational microlensing exoplanet survey will provide a statistical census of exoplanets with masses greater than 0.1 Earth-masses and orbital separations ranging from 0.5AU to...
OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion? (2009)
Christie, G.W., Gaudi, B.S., Kubiak, M., Szymanski, M.K., Pietrzynski, G., Soszynski, I., ...
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...
Hartman, J. D., Gaudi, B. S., Holman, M. J., McLeod, B. A., Stanek, K. Z., Barranco, J. A., ...
We present the results of a deep (15 ~< r ~< 23), 20 night survey for transiting planets in the intermediate age open cluster M37 (NGC 2099) using the Megacam wide-field mosaic CCD camera on the 6.5m...
Dong, Subo, Bond, I. A., Gould, A., Kozlowski, Szymon, Miyake, N., Gaudi, B. S., ...
We report the detection of the cool, Jovian-mass planet MOA-2007-BLG-400Lb. The planet was detected in a high-magnification microlensing event (with peak magnification A_max = 628) in which the...
Towards A Census of Earth-mass Exo-planets with Gravitational Microlensing (2008)
Beaulieu, J. P., Kerins, E., Mao, S., Bennett, D., Cassan, A., Dieters, S., ...
Thirteen exo-planets have been discovered using the gravitational microlensing technique (out of which 7 have been published). These planets already demonstrate that super-Earths (with mass up to ~10...
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...
Deep MMT Transit Survey of the Open Cluster M37 III: Stellar Rotation at 550 Myr (2008)
Hartman, J. D., Gaudi, B. S., Pinsonneault, M. H., Stanek, K. Z., Holman, M. J., McLeod, B. A., ...
In the course of conducting a deep (14.5 ~< r ~< 23), 20 night survey for transiting planets in the rich ~550 Myr old open cluster M37 we have measured the rotation periods of 575 stars which lie...
Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing (2008)
Gaudi, B. S., Bennett, D. P., Udalski, A., Gould, A., Christie, G. W., Maoz, D., ...
Searches for extrasolar planets have uncovered an astonishing diversity of planetary systems, yet the frequency of solar system analogs remains unknown. The gravitational microlensing planet search...
Deep MMT Transit Survey of the Open Cluster M37 II: Variable Stars (2007)
Hartman, J. D., Gaudi, B. S., Holman, M. J., McLeod, B. A., Stanek, K. Z., Barranco, J. A., ...
We have conducted a deep ($15 \la r \la 23$), 20 night survey for transiting planets in the intermediate age ($\sim 550 {\rm Myr}$) open cluster M37 (NGC 2099) using the Megacam wide-field mosaic CCD...
Deep MMT Transit Survey of the Open Cluster M37 I: Observations and Cluster Parameters (2007)
Hartman, J. D., Gaudi, B. S., Holman, M. J., McLeod, B. A., Stanek, K. Z., Barranco, J. A., ...
We have conducted a deep ($15 \la r \la 23$), 20 night survey for transiting planets in the intermediate age open cluster M37 (NGC 2099) using the Megacam wide-field mosaic CCD camera on the 6.5m...
An Extrasolar Planet Census with a Space-based Microlensing Survey (2007)
Bennett, D. P., Anderson, J., Bond, I., Cheng, E., Cook, K., ...
A space-based gravitational microlensing exoplanet survey will provide a statistical census of exoplanets with masses down to 0.1 Earth-masses and orbital separations ranging from 0.5AU to infinity....
A Search for Transiting Hot Planets as Small as Neptune in the Open Cluster M37 (2007)
Hartman, J. D., Gaudi, B. S., Holman, M. J., McLeod, B. A., Stanek, K. Z., Barranco, J.
We are conducting a transit survey of the open cluster M37 using the Megacam instrument on the 6.5 m Multiple-Mirror Telescope. We have obtained ~4500 images of this cluster over 18.5 nights and have...
Microlens OGLE-2005-BLG-169 Implies Cool Neptune-Like Planets are Common (2006)
Gould, A., Udalski, A., An, D., Bennett, D. P., Dong, S., ...
We detect a Neptune mass-ratio (q~8e-5) planetary companion to the lens star in the extremely high-magnification (A~800) microlensing event OGLE-2005-BLG-169. If the parent is a main-sequence star,...
Potential Direct Single-Star Mass Measurement (2005)
Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...
We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2005)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...
Planetary Detection Efficiency of the Magnification 3000 Microlensing Event OGLE-2004-BLG-343 (2005)
Dong, Subo, DePoy, D. L., Gaudi, B. S., Gould, A., Han, C., ...
OGLE-2004-BLG-343 was a microlensing event with peak magnification A_{max}=3000+/-1100, by far the highest-magnification event ever analyzed and hence potentially extremely sensitive to planets...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
Hartman, J. D., Stanek, K. Z., Gaudi, B. S., Holman, M. J., McLeod, B. A.
We present the results from a three night, time-series study of the open cluster NGC 6791 using the Megacam wide-field mosaic CCD camera on the 6.5m MMT telescope. The aim of this study was to...
Searching for Transiting Planets in Stellar Systems (2005)
We analyze the properties of searches devoted to finding planetary transits by observing simple stellar systems, such as globular clusters, open clusters, and the Galactic bulge. We develop the...
Deep Photometry of GRB 041006 Afterglow: Hypernova Bump at Redshift z=0.716 (2005)
Stanek, K. Z., Garnavich, P. M., Nutzman, P. A., Hartman, J. D., Garg, A., Adelberger, K., ...
We present deep optical photometry of the afterglow of gamma-ray burst (GRB) 041006 and its associated hypernova obtained over 65 days after detection (55 R-band epochs on 10 different nights). Our...
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071 (2005)
Udalski, A., Jaroszynski, M., Paczynski, B., Kubiak, M., Szymanski, M. K., Soszynski, I., ...
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\tilde r_E \theta_E and...
Yoo, Jaiyul, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
We develop a new method of modeling microlensing events based on a Monte Carlo simulation that incorporates both a Galactic model and the constraints imposed by the observed characteristics of the...
MOA 2003-BLG-37: A Bulge Jerk-Parallax Microlens Degeneracy (2004)
DePoy, D. L., Gaudi, B. S., Gould, A., Han, C., Pogge, R. W., ...
We analyze the Galactic bulge microlensing event MOA-2003-BLG-37. Although the Einstein timescale is relatively short, t_e=43 days, the lightcurve displays deviations consistent with parallax effects...
Potential Direct Single-Star Mass Measurement (2004)
Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...
We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...
Potential Direct Single-Star Mass Measurement (2004)
Ghosh, H., Depoy, D.L., Gal-Yam, A., Gaudi, B.S., Gould, A., Han, C., ...
We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a...
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star (2004)
Jiang, Guangfei, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\\tilde r_E \\theta_E...
OGLE-2003-BLG-262: Finite-Source Effects from a Point-Mass Lens (2003)
Yoo, Jaiyul, DePoy, D. L., Gal-Yam, A., Gaudi, B. S., Gould, A., Han, C., ...
We analyze OGLE-2003-BLG-262, a relatively short, t_E=12.5+-0.1day, microlensing event generated by a point-mass lens transiting the face of a K giant source in the Galactic bulge. We use the...
High-Precicison Limb-Darkening Measurement of a K3 Giant Using Microlensing (2003)
Fields, Dale L., Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., ...
We obtain high-precision limb-darkening measurements in five bands (V, V_E, I_E, I, and H) for the K3 III (Teff=4200 K, [Fe/H]=+0.3, log(g)=2.3) source of the Galactic bulge microlensing event EROS...
Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...
We analyze PLANET and MACHO observations of MACHO 99-BLG-47, the first nearly-normal microlensing event for which high signal-to-noise-ratio data reveal a well-covered, short-duration anomaly. This...
First microlens mass measurement: PLANET photometry of EROS BLG-2000-5 (2001)
An, Jin H., Albrow, M. D., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...
We analyze PLANET photometric observations of the caustic-crossing binary-lens microlensing event, EROS BLG-2000-5, and find that modeling the observed light curve requires incorporation of the...
Gaudi, B. S., Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., ...
We analyze five years of PLANET photometry of microlensing events toward the Galactic bulge to search for the short-duration deviations from single lens light curves that are indicative of the...
Limits on the Abundance of Galactic Planets From 5 Years of PLANET Observations (2001)
Albrow, M.D., An, J., Beaulieu, J.P., Caldwell, J.A.R., DePoy, D.L., Dominik, M., ...
Limits on the Abundance of Galactic Planets From Five Years of Planet Observations (2000)
Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...
We search for signatures of planets in 43 intensively monitored microlensing events that were observed between 1995 and 1999. Planets would be expected to cause a short duration (~1 day) deviation on...
Albrow, M. D., An, J., Caldwell, J. A. R., DePoy, D. L., Dominik, M., ...
We present PLANET observations of OGLE-1999-BUL-23, a binary-lens microlensing event towards the Galactic bulge. PLANET observations in the I and V bands cover the event from just before the first...
Dominik, M., Albrow, M. D., Caldwell, J. A. R., DePoy, D. L., Gaudi, B. S., ...
Among various techniques to search for extra-solar planets, microlensing has some unique characteristics. Contrary to all other methods which favour nearby objects, microlensing is sensitive to...
Detection of Rotation in a Binary Microlens: PLANET Photometry of MACHO 97-BLG-41 (1999)
Albrow, M. D., Caldwell, J. A. R., Dominik, M., Gaudi, B. S., Gould, A., ...
We analyze PLANET collaboration data for MACHO 97-BLG-41, the only microlensing event observed to date in which the source transits two disjoint caustics. The PLANET data, consisting of 46 V-band and...
Limits on Stellar and Planetary Companions in Microlensing Event OGLE-1998-BUL-14 (1999)
Albrow, M. D., Caldwell, J. A. R., DePoy, D. L., Dominik, M., Gaudi, B. S., ...
We present the PLANET photometric data set for \ob14, a high magnification ($A_{\rm max}\sim 16$) event alerted by the OGLE collaboration toward the Galactic bulge in 1998. The PLANET data set...
A Complete Set of Solutions For Caustic-Crossing Binary Microlensing Events (1999)
Albrow, M. D., Caldwell, J. A. R., DePoy, D. L., Dominik, M., Gaudi, B. S., ...
We present a method to analyze binary-lens microlensing light curves with one well-sampled fold caustic crossing. In general, the surface of chi^2 shows extremely complicated behavior over the...
The Relative Lens-Source Proper Motion in MACHO 98-SMC-1 (1998)
Caldwell, J. A. R., DePoy, D. L., Dominik, M., Gaudi, B. S., ...
We present photometric and spectroscopic data for the second microlensing event seen toward the Small Magellanic Cloud (SMC), MACHO-98-SMC-1. The lens is a binary. We resolve the caustic crossing and...