The Mass of the Black Hole in the Quasar PG 2130+099 (2008)
Grier, C. J., Peterson, B. M., Bentz, M. C., Denney, K. D., Eastman, J. D., Dietrich, M., ...
We present the results of a recent reverberation-mapping campaign undertaken to improve measurements of the radius of the broad line region and the central black hole mass of the quasar PG 2130+099....
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...
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...
Dilday, Benjamin, Kessler, R., Frieman, J. A., Holtzman, J., Marriner, J., Miknaitis, G., ...
We present a measurement of the rate of type Ia supernovae (SNe Ia) from the first of three seasons of data from the SDSS-II Supernova Survey. For this measurement, we include 17 SNe Ia at redshift...
A Photometric Survey for Variables and Transits in the Field of Praesepe with KELT (2007)
Pepper, Joshua, Stanek, K. Z., Pogge, Richard W., Latham, David W., DePoy, D. L., Siverd, Robert, ...
The Kilodegree Extremely Little Telescope (KELT) project is a small aperture, wide-angle search for planetary transits of solar-type stars. In this paper, we present the results of a commissioning...
The Luminous and Carbon-Rich Supernova 2006gz: A Double Degenerate Merger? (2007)
Hicken, M., Garnavich, P. M., Prieto, J. L., Blondin, S., DePoy, D. L., Kirshner, R. P., ...
Spectra and light curves of SN 2006gz show the strongest signature of unburned carbon and one of the slowest fading light curves ever seen in a type Ia event (Delta m_15 = 0.69 +/- 0.04). The...
The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary (2007)
Frieman, Joshua A., Bassett, B., Becker, A., Choi, C., Cinabro, D., DeJongh, F., ...
The Sloan Digital Sky Survey-II (SDSS-II) has embarked on a multi-year project to identify and measure light curves for intermediate-redshift (0.05 < z < 0.35) Type Ia supernovae (SNe Ia) using...
The Sloan Digital Sky Survey-II Supernova Survey: Search Algorithm and Follow-up Observations (2007)
Sako, Masao, Bassett, B., Becker, A., Cinabro, D., DeJongh, F., Depoy, D. L., ...
The Sloan Digital Sky Survey-II Supernova Survey has identified a large number of new transient sources in a 300 sq. deg. region along the celestial equator during its first two seasons of a...
A Study of the Type Ia/IIn Supernova 2005gj from X-ray to the Infrared: Paper I (2007)
Prieto, J. L., Garnavich, P. M., Phillips, M. M., DePoy, D. L., Parrent, J., Pooley, D., ...
We present extensive ugrizYHJK photometry and optical spectroscopy of SN 2005gj obtained by the SDSS-II and CSP Supernova Projects, which give excellent coverage during the first 150 days after the...
Pepper, Joshua, Pogge, Richard W., DePoy, D. L., Marshall, J. L., Stanek, K. Z., Stutz, Amelia M., ...
The Kilodegree Extremely Little Telescope (KELT) project is a survey for planetary transits of bright stars. It consists of a small-aperture, wide-field automated telescope located at Winer...
Peeples, Molly S., Stanek, K. Z., DePoy, D. L.
We present a catalog of 110 variable stars within ~1' of Sgr A* based on image subtraction of near-infrared (H and K) photometry. Our images were obtained over 133 nights from 2000--2002 in H-band...
First Space-Based Microlens Parallax Measurement: Spitzer Observations of OGLE-2005-SMC-001 (2007)
Dong, Subo, Udalski, A., Gould, A., Reach, W. T., Christie, G. W., Boden, A. F., ...
We combine Spitzer and ground-based observations to measure the microlens parallax of OGLE-2005-SMC-001, the first such space-based determination since S. Refsdal proposed the idea in 1966. The...
Exploring broadband GRB behavior during gamma-ray emission (2007)
Yost, S. A., Swan, H. F., Rykoff, E. S., Aharonian, F., Akerlof, C. W., Alday, A., ...
Early Results from the KELT Transit Survey (2006)
Pepper, Joshua, Pogge, Richard, DePoy, D. L., Marshall, J. L., Stutz, Amelia, Trueblood, Mark, ...
The Kilodegree Extremely Little Telescope (KELT) project is a small-aperture transit survey of bright stars. The project has completed commissioning runs searching for transits in the Hyades and...
Exploring Broadband GRB Behavior During gamma-ray Emission (2006)
Yost, S. A., Swan, H. F., Rykoff, E. S., Aharonian, F., Akerlof, C. W., Alday, A., ...
The robotic ROTSE-III telescope network detected prompt optical emission contemporaneous with the gamma-ray emission of Swift events GRB051109A and GRB051111. Both datasets have continuous coverage...
Peeples, Molly S., Bonanos, A. Z., DePoy, D. L., Stanek, K. Z., Pepper, J., Pogge, Richard W., ...
We present a re-analysis of our H- and K-band photometry and light-curves for GCIRS 16SW, a regular periodic source near the Galactic center. These data include those presented by DePoy et al....
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,...
Optical and Near-Infrared Observations of the Peculiar Type Ia Supernova 1999ac (2006)
Phillips, Mark M., Krisciunas, Kevin, Suntzeff, Nicholas B., Abraham, R. G., Beckett, M. G., Bonati, M., ...
We present 39 nights of optical photometry, 34 nights of infrared photometry, and 4 nights of optical spectroscopy of the Type Ia SN 1999ac. This supernova was discovered two weeks before maximum...
Burke, Christopher J., Gaudi, B. Scott, DePoy, D. L., Pogge, Richard W.
We analyze a 19-night photometric search for transiting extrasolar planets in the open cluster NGC 1245. An automated transit search algorithm with quantitative selection criteria finds six transit...
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 (
Flattening Scientific CCD Imaging Data with a Dome Flat Field System (2005)
We describe the flattening of scientific CCD imaging data using a dome flat field system. The system uses light emitting diodes (LEDs) to illuminate a carefully constructed dome flat field screen....
The Disappearing Act of KH 15D: Photometric Results from 1995 to 2004 (2005)
Hamilton, C. M., Herbst, W., Vrba, F. J., Ibrahimov, M. A., Mundt, R., ...
We present results from the most recent (2002-2004) observing campaigns of the eclipsing system KH 15D, in addition to re-reduced data obtained at Van Vleck Observatory (VVO) between 1995 and 2000....
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...
Marshall, J. L., Burke, Christopher J., DePoy, D. L., Gould, Andrew, Kollmeier, Juna A.
We present metallicity estimates for seven open clusters based on spectrophotometric indices from moderate-resolution spectroscopy. Observations of field giants of known metallicity provide 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 (
RETROCAM: A Versatile Optical Imager for Synoptic Studies (2005)
Morgan, Christopher W., Byard, Paul L., DePoy, D. L., Derwent, Mark, Kochanek, Christopher S., Marshall, J. L., ...
We present RETROCAM, an auxiliary CCD camera that can be rapidly inserted into the optical beam of the MDM 2.4m telescope. The speed and ease of reconfiguring the telescope to use the imager and 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 (
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 (
Stellar, remnant, planetary, and dark-object masses from astrometric microlensing (2004)
Boden, A., Gould, A. P., Bennett, D. P., Depoy, D. L., Gaudi, S. B., Griest, K., ...
With SIM, we will break the microlensing degeneracy, and allow detailed interpretation of individual microlensing events. We will thus develop a detailed census of the dark and luminous stellar...
The Nature of the Variable Galactic Center Source IRS16SW (2004)
DePoy, D. L., Pepper, J., Pogge, Richard W., Stutz, Amelia, Pinsonneault, M., Sellgren, K.
We report measurements of the light curve of the variable Galactic Center source IRS16SW. The light curve is not consistent with an eclipsing binary or any other obvious variable star. The source may...
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...
KELT: The Kilodegree Extremely Little Telescope (2004)
Pepper, Joshua, Gould, Andrew, DePoy, D. L.
Transits of bright stars offer a unique opportunity to study detailed properties of extrasolar planets that cannot be determined through radial-velocity observations. We propose a technique to find...
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...
Burke, Christopher J., Gaudi, B. Scott, DePoy, D. L., Pogge, Richard W., Pinsonneault, Marc H.
We derive fundamental parameters for the old, rich open cluster NGC 1245 using BVI photometry from the MDM 1.3m and 2.4m telescopes. Based on detailed isochrone fitting, we find NGC 1245 has a...
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...
The Stellar Content of M31's Bulge (2003)
Stephens, Andrew W., Frogel, Jay A., DePoy, D. L., Freedman, Wendy, Gallart, Carme, Jablonka, Pascale, ...
In this paper we analyze the stellar populations present in M31 using nine sets of adjacent HST-NICMOS Camera 1 and 2 fields with galactocentric distances ranging from 2' to 20'. These infrared...
Sensitivity of Transit Searches to Habitable Planets (2002)
Gould, Andrew, Pepper, Joshua, DePoy, D. L.
Photon-limited transit surveys in V band are in principle about 20 times more sensitive to planets of fixed size in the habitable zone around M stars than G stars. In I band the ratio is about 400....
A 1" Telescope: The Optimal Approach to Bright-Star Planetary Transits (2002)
Pepper, Joshua, Gould, Andrew, DePoy, D. L.
Planetary transits of bright stars, V < 10, offer the best opportunity for detailed studies of extra-solar planets, such as are already being carried out for HD209458b. Since these stars are rare,...
Burke, Christopher J., DePoy, D. L., Gaudi, B. Scott, Marshall, J. L., Pogge, Richard W.
We present first results from the Survey for Transiting Extrasolar Planets in Stellar Systems (STEPSS). Our goal is to assess the frequency of close-in extrasolar planets around main-sequence stars...
Using All-Sky Surveys to Find Planetary Transits (2002)
Pepper, Joshua, Gould, Andrew, Depoy, D. L.
Transits of bright stars offer a unique opportunity to study detailed properties of extrasolar planets that cannot be determined through radial-velocity observations. We propose a new technique to...
Near-IR and Optical Morphology of Spiral Galaxies (2002)
Eskridge, Paul B., Frogel, Jay A., Pogge, Richard W., Quillen, Alice C., Berlind, Andreas A., Davies, Roger L., ...
We announce the initial release of data from the Ohio State University Bright Spiral Galaxy Survey, a BVRJHK imaging survey of a well-defined sample of 205 bright, nearby spiral galaxies. We present...
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...
Pinsonneault, M. H., DePoy, D. L., Coffee, M.
The mass of the outer convective zone in FGK main sequence stars decreases dramatically with stellar mass. Therefore, any contamination of a star's atmosphere by accreted planetary material should...
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...
Frogel, J. A., Stephens, A. W., Ramirez, S., DePoy, D. L.
We present a new method for the determination of [Fe/H] for globular clusters. This new method is based on moderate resolution (R~1500) near-IR spectroscopy in the K-band of 6 to 10 of the brightest...
Castro, S., Pogge, R. W., Rich, R. M., DePoy, D. L., Gould, A.
We present two Keck HIRES spectra (R=40,000) of a bulge K3 giant taken on successive nights during the second caustic crossing of the binary microlensing event EROS BLG-2000-5. This caustic crossing...
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., ...
Patrick B. Hall, Paul Martini, D. L. Depoy, Ian Gatley
A candidate radio-loud broad absorption line quasar (RLBAL) has been reported by Becker et al. (1997). We present JHK observations of this object and three other radiodetected BALs taken with the new...
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...
Microlensing Constraints on the Frequency of Jupiter Mass Planets (2000)
Gaudi, B. Scott, Albrow, M. D., An, Jin H., Caldwell, J. A. R., Depoy, D. L., ...
Microlensing is the only technique likely, within the next 5 years, to constrain the frequency of Jupiter-analogs. The PLANET collaboration has monitored nearly 100 microlensing events of which more...
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...