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相关论文: Measuring the Galactic Distribution of Transiting …

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Short duration lensing events tend to be generated by low-mass lenses or by lenses with high transverse velocities. Furthermore, for any given lens mass and speed, events of short duration are preferentially caused by nearby lenses…

地球与行星天体物理 · 物理学 2015-05-14 Rosanne Di Stefano

Because the planets of a system form in a flattened disk, they are expected to share similar orbital inclinations at the end of their formation. The high-precision photometric monitoring of stars known to host a transiting planet could thus…

地球与行星天体物理 · 物理学 2015-05-18 M. Gillon , X. Bonfils , B. -O. Demory , S. Seager , D. Deming , A. H. M. J. Triaud

Astrometric observations of microlensing events can be used to obtain important information about lenses. During these events, the shift of the position of the multiple image centroid with respect to the source star location can be…

地球与行星天体物理 · 物理学 2018-07-18 Lindita Hamolli , Mimoza Hafizi , Francesco De Paolis , Achille A. Nucita

Gaudi, Naber & Sackett pointed out that if an event is caused by a lens system containing more than two planets, all planets will affect the central region of the magnification pattern, and thus the existence of the multiple planets can be…

天体物理学 · 物理学 2017-01-18 Cheongho Han , Myeong-Gu Park

We describe a project (transitsearch.org) currently attempting to discover transiting intermediate-period planets orbiting bright parent stars, and we simulate that project's performance. The discovery of such a transit would be an…

天体物理学 · 物理学 2009-11-10 Scott Seagroves , Justin Harker , Gregory Laughlin , Justin Lacy , Tim Castellano

We demonstrate that gravitational lensing can be used to discover and study planets in the habitable zones of nearby dwarf stars. If appropriate software is developed, a new generation of monitoring programs will automatically conduct a…

天体物理学 · 物理学 2008-01-11 Rosanne Di Stefano , Christopher Night

Recent studies have demonstrated that detailed monitoring of gravitational microlensing events can reveal the presence of planets orbiting the microlensed source stars. With the potential of probing planets in the Galactic Bulge and…

天体物理学 · 物理学 2009-11-06 Ceri E. Ashton , Geraint F. Lewis

We classify various types of planetary lensing signals and the channels of detecting them. We estimate the relative frequencies of planet detections through the individual channels with special emphasis on the new channels to be…

天体物理学 · 物理学 2009-11-13 Cheongho Han

We investigate the possibility of identifying massive objects (lenses) in the Galactic Center region (GC) by means of pulsar timing. The well known intensity change due to microlensing is found to be less important. For typical stellar…

天体物理学 · 物理学 2016-08-30 N. Wex , J. Gil , M. Sendyk

To move one step forward toward a Galactic distribution of planets, we present the first planet sensitivity analysis for microlensing events with simultaneous observations from space and the ground. We present this analysis for two such…

The primary difficulty with using transits to discover extrasolar planets is the low probability a planet has of transiting its parent star. One way of overcoming this difficulty is to search for transits in dense stellar fields, such as…

天体物理学 · 物理学 2009-10-31 B. Scott Gaudi

The Large Synoptic Survey Telescope (LSST) will generate light curves for approximately 1 billion stars. Our previous work has demonstrated that, by the end of the LSST 10 year mission, large numbers of transiting exoplanetary systems could…

地球与行星天体物理 · 物理学 2017-04-05 Savannah R. Jacklin , Michael B. Lund , Joshua Pepper , Keivan G. Stassun

With round-the-clock monitoring of galactic bulge microlensing events, the PLANET experiment constrains the abundance and can yield the discovery of planets down to the mass of earth around galactic disk and bulge stars. Data taken until…

Strong variations of any kind and causes within a stellar light curve may prohibit the detection of transits, particularly of faint or shallow transits caused by small planets passing in front of the stellar disk. The success of future…

天体物理仪器与方法 · 物理学 2016-07-29 Sascha Grziwa , Martin Pätzold

Planetary systems toward the Galactic Bulge can be detected through microlensing measurements. The microlensing planet search technique has some unique merits: low-mass planets can be detected from the ground; the Galactic family of…

天体物理学 · 物理学 2007-05-23 S. H. Rhie

Among more than 200 extrasolar planet candidates discovered to date, there is no known planet orbiting around normal binary stars. In this paper, we demonstrate that microlensing is a technique that can detect such planets. Microlensing…

天体物理学 · 物理学 2009-11-13 Cheongho Han

Microlensing has recently proven to be a valuable tool to search for extrasolar planets of Neptune- to super-Earth-mass planets at orbits of few AU. Since planetary signals are of very short duration, an intense and continuous monitoring is…

天体物理学 · 物理学 2007-05-23 A. Cassan , D. Kubas

To maximize the number of planet detections by increasing efficiency, current microlensing follow-up observation experiments are focusing on high-magnification events to search for planet-induced perturbations near the peak of lensing light…

天体物理学 · 物理学 2009-11-10 Cheongho Han

Context. Detecting regular dips in the light curve of a star is an easy way to detect the presence of an orbiting planet. COROT is a Franco-European mission launched at the end of 2006, and one of its main objectives is to detect planetary…

天体物理学 · 物理学 2009-11-13 S. Carpano , M. Fridlund

A planetary transit produces both a photometric signal and a spectroscopic signal. Precise observations of the transit light curve reveal the planetary radius and allow a search for timing anomalies caused by satellites or additional…

天体物理学 · 物理学 2007-10-08 Joshua N. Winn