Search Results - "Coutures, C."
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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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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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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 Jupiter/Saturn Analog with Gravitational Microlensing
Published in Science (American Association for the Advancement of Science) (15-02-2008)“…Searches for extrasolar planets have uncovered an astonishing diversity of planetary systems, yet the frequency of solar system analogs remains unknown. The…”
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Masses and Orbital Constraints for the OGLE-2006-BLG-109Lb,c Jupiter/Saturn Analog Planetary System
Published in The Astrophysical journal (20-04-2010)Get full text
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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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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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The Extreme Microlensing Event OGLE-2007-BLG-224: Terrestrial Parallax Observation of a Thick-Disk Brown Dwarf
Published in The Astrophysical journal (20-06-2009)Get full text
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Extreme Magnification Microlensing Event OGLE-2008-BLG-279: Strong Limits on Planetary Companions to the Lens Star
Published in The Astrophysical journal (01-10-2009)“…ABSTRACT We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A ∼ 1600 on 2008 May 30…”
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OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
Published in Monthly notices of the Royal Astronomical Society (01-08-2012)“…Abstract The microlensing event OGLE-2008-BLG-510 is characterized by an evident asymmetric shape of the peak, promptly detected by the Automated Robotic…”
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SPB stars in the open SMC cluster NGC 371
Published in Monthly notices of the Royal Astronomical Society (2008)“…Pulsation in β Cep and slowly pulsating B (SPB) stars are driven by the κ mechanism which depends critically on the metallicity. It has therefore been…”
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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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A transient I-band excess in the optical spectrum of the accreting millisecond pulsar SAX J1808.4-3658
Published in Monthly notices of the Royal Astronomical Society (11-08-2006)“…The optical counterpart of the transient, millisecond X-ray pulsar SAX J1808.4-3658 was observed in four colours (BVRI) for five weeks during the 2005…”
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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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Combined Analysis of the Binary Lens Caustic-crossing Event MACHO 98-SMC-1
Published in The Astrophysical journal (20-03-2000)“…We fit the data for the binary lens microlensing event MACHO 98-SMC-1 from five different microlensing collaborations and find two distinct solutions…”
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Removing the Microlensing Blending-Parallax Degeneracy Using Source Variability
Published in The Astrophysical journal (01-10-2006)Get full text
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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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Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey
Published in Publications of the Astronomical Society of the Pacific (01-12-2016)“…K2's Campaign 9 (K2C9) will conduct a ∼3.7 deg2 survey toward the Galactic bulge from 2016 April 22 through July 2 that will leverage the spatial separation…”
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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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