Search Results - "DONATOWICZ, J"
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Combining Spitzer parallax and Keck II adaptive optics imaging to measure the mass of a solar-like star orbited by a cold gaseous planet discovered by microlensing
Published in The Astrophysical journal (01-02-2018)“…To obtain accurate mass measurements for cold planets discovered by microlensing, it is usually necessary to combine light curve modeling with at least two…”
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Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
Published in Monthly notices of the Royal Astronomical Society (21-08-2009)“…The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration…”
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Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing
Published in Nature (26-01-2006)“…In the favoured core-accretion model of formation of planetary systems, solid planetesimals accumulate to build up planetary cores, which then accrete nebular…”
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INTERPRETATION OF A SHORT-TERM ANOMALY IN THE GRAVITATIONAL MICROLENSING EVENT MOA-2012-BLG-486
Published in The Astrophysical journal (20-11-2013)“…A planetary microlensing signal is generally characterized by a short-term perturbation to the standard single lensing light curve. A subset of binary-source…”
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A SUPER-JUPITER ORBITING A LATE-TYPE STAR: A REFINED ANALYSIS OF MICROLENSING EVENT OGLE-2012-BLG-0406
Published in The Astrophysical journal (10-02-2014)“…We present a detailed analysis of survey and follow-up observations of microlensing event OGLE-2012-BLG-0406 based on data obtained from 10 different…”
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The Current State of Solar Modeling
Published in Science (American Association for the Advancement of Science) (31-05-1996)“…Data from the Global Oscillation Network Group (GONG) project and other helioseismic experiments provide a test for models of stellar interiors and for the…”
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A NEW TYPE OF AMBIGUITY IN THE PLANET AND BINARY INTERPRETATIONS OF CENTRAL PERTURBATIONS OF HIGH-MAGNIFICATION GRAVITATIONAL MICROLENSING EVENTS
Published in The Astrophysical journal (01-09-2012)“…High-magnification microlensing events provide an important channel to detect planets. Perturbations near the peak of a high-magnification event can be…”
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A POSSIBLE BINARY SYSTEM OF A STELLAR REMNANT IN THE HIGH-MAGNIFICATION GRAVITATIONAL MICROLENSING EVENT OGLE-2007-BLG-514
Published in The Astrophysical journal (20-06-2012)“…We report the extremely high-magnification (A > 1000) binary microlensing event OGLE-2007-BLG-514. We obtained good coverage around the double peak stmcture in…”
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OGLE-2005-BLG-018: Characterization of Full Physical and Orbital Parameters of a Gravitational Binary Lens
Published in The Astrophysical journal (10-07-2011)“…We present the result of the analysis of the gravitational binary-lensing event OGLE-2005-BLG-018. The light curve of the event is characterized by two…”
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OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star
Published in The Astrophysical journal (20-12-2004)“…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…”
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Potential Direct Single-Star Mass Measurement
Published in The Astrophysical journal (01-11-2004)“…We analyze the light curve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future…”
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Interpretation of Strong Short-Term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events
Published in The Astrophysical journal (10-11-2009)“…To improve the planet detection efficiency, current planetary microlensing experiments are focused on high-magnification events searching for planetary signals…”
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OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
Published in The Astrophysical journal (01-11-2010)“…The mass function and statistics of binaries provide important diagnostics of the star formation process. Despite this importance, the mass function at low…”
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MOA-2011-BLG-262Lb: A SUB-EARTH-MASS MOON ORBITING A GAS GIANT PRIMARY OR A HIGH VELOCITY PLANETARY SYSTEM IN THE GALACTIC BULGE
Published in The Astrophysical journal (20-04-2014)“…We present the first microlensing candidate for a free-floating exoplanet-exomoon system, MOA-2011-BLG-262, with a primary lens mass of M sub(host) ~ 4 Jupiter…”
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Frequency of Solar-like Systems and of Ice and Gas Giants Beyond the Snow Line from High-magnification Microlensing Events in 2005-2008
Published in The Astrophysical journal (10-09-2010)“…We present the first measurement of the planet frequency beyond the "snow line," for the planet-to-star mass-ratio interval –4.5 < log q < –2, corresponding to…”
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A Cold Neptune-Mass Planet OGLE-2007-BLG-368Lb: Cold Neptunes Are Common
Published in The Astrophysical journal (20-02-2010)“…We present the discovery of a Neptune-mass planet OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 +- 2.1] x 10{sup -5} via gravitational…”
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PATHWAY TO THE GALACTIC DISTRIBUTION OF PLANETS: COMBINED SPITZER AND GROUND-BASED MICROLENS PARALLAX MEASUREMENTS OF 21 SINGLE-LENS EVENTS
Published in The Astrophysical journal (01-05-2015)“…ABSTRACT We present microlens parallax measurements for 21 (apparently) isolated lenses observed toward the Galactic bulge that were imaged simultaneously from…”
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OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion?
Published in The Astrophysical journal (20-04-2009)“…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…”
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OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF
Published in The Astrophysical journal (01-05-2015)“…ABSTRACT We report the discovery of a Jupiter-mass planet orbiting an M-dwarf star that gave rise to the microlensing event OGLE-2011-BLG-0265. Such a system…”
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One or more bound planets per Milky Way star from microlensing observations
Published in Nature (London) (12-01-2012)“…A statistical analysis of microlensing data from 2002–07 reveals that stars in the Milky Way are orbited by planets as a rule, rather than an exception…”
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