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For extrasolar planets with orbital periods, P>10 days, radial velocity surveys find non-circular orbital eccentricities are common, <e>~0.3. Future surveys for extrasolar planets using the transit technique will also have sensitivity to…

Astrophysics · Physics 2009-11-13 Christopher J. Burke

Planets on eccentric orbits have a higher geometric probability of transiting their host star. By application of Bayes' theorem, we reverse this logic to show that the eccentricity distribution of transiting planets is positively biased.…

Earth and Planetary Astrophysics · Physics 2015-06-22 David M. Kipping

Roughly half of Solar-type planet hosts have stellar companions, so understanding how these binary companions affect the formation and evolution of planets is an important component to understanding planetary systems overall. Measuring the…

Transiting planets in multiple-star systems, especially high-order multiples, make up a small fraction of the known planet population but provide unique opportunities to study the environments in which planets would have formed.…

Observing extrasolar planetary transits is one of the only ways that we may infer the masses and radii of planets outside the Solar System. As such, the detections made by photometric transit surveys are one of the only foreseeable ways…

Astrophysics · Physics 2009-11-13 Thomas G. Beatty

Straight-forward derivation of planetary parameters can only be achieved in transiting planetary systems. However, planetary attributes such as radius and mass strongly depend on stellar host parameters. Discovering a transit host star to…

Solar and Stellar Astrophysics · Physics 2015-05-13 S. Daemgen , F. Hormuth , W. Brandner , C. Bergfors , M. Janson , S. Hippler , Th. Henning

The light curve of an exoplanetary transit can be used to estimate the planetary radius and other parameters of interest. Because accurate parameter estimation is a non-analytic and computationally intensive problem, it is often useful to…

Astrophysics · Physics 2009-11-13 Joshua A. Carter , Jennifer C. Yee , Jason Eastman , B. Scott Gaudi , Joshua N. Winn

We consider the effects of mutual transits by extrasolar planet-companion systems (in a true binary or a planet-satellite system) on light curves. We show that induced changes in light curves depend strongly on a ratio between a…

Earth and Planetary Astrophysics · Physics 2015-05-13 Masanao Sato , Hideki Asada

The search for planets orbiting other stars has recently expanded to include stars from galaxies outside the Milky Way. With the TESS and Gaia surveys, photometric and kinematic information can be combined to identify transiting planet…

Earth and Planetary Astrophysics · Physics 2022-09-07 Stephanie Yoshida , Samuel Grunblatt , Adrian Price-Whelan

Among other things, studies of the formation and evolution of planetary systems currently draw on two important observational resources: the precise characterization available for planets that transit their parent stars and the frequency…

Earth and Planetary Astrophysics · Physics 2010-06-21 Darin Ragozzine , Matthew J. Holman

Since the discovery of the first exoplanets, those most adequate for life to begin and evolve have been sought. Due to observational bias, however, most of the discovered planets so far are gas giants, precluding their habitability.…

Earth and Planetary Astrophysics · Physics 2011-11-24 Luis Ricardo M. Tusnski , Adriana Valio

Ultra-short-period planets (USPs) provide important clues to planetary formation and migration. Recently, it is found that the mutual inclinations of the planetary systems are larger if the inner orbits are closer ($\lesssim 5R_*$) and if…

Earth and Planetary Astrophysics · Physics 2020-03-04 Gongjie Li , Fei Dai , Juliette Becker

The rotation of a star and the revolutions of its planets are not necessarily aligned. This article reviews the measurement techniques, key findings, and theoretical interpretations related to the obliquities (spin-orbit angles) of…

Earth and Planetary Astrophysics · Physics 2022-08-23 Simon H. Albrecht , Rebekah I. Dawson , Joshua N. Winn

The recent discovery of a planetary transit in the star HD 209458, and the subsequent highly precise observation of the transit lightcurve with Hubble Space Telescope, is encouraging to search for any phenomena that might induce small…

Astrophysics · Physics 2009-11-06 Jordi Miralda-Escude

We describe statistical methods for measuring the exoplanet multiplicity function - the fraction of host stars containing a given number of planets - from transit and radial-velocity surveys. The analysis is based on the approximation of…

Earth and Planetary Astrophysics · Physics 2015-05-28 Scott Tremaine , Subo Dong

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…

Astrophysics · Physics 2009-10-31 B. Scott Gaudi

If planetary systems are ubiquitous then a fraction of stars should possess a transiting planet when being microlensed. This paper presents a study of the influence of such planets on microlensing light curves. For the giant planets…

Astrophysics · Physics 2009-11-07 Geraint F. Lewis

The findings of more than 350 extrasolar planets, most of them nontransiting Hot Jupiters, have revealed correlations between the metallicity of the main-sequence (MS) host stars and planetary incidence. This connection can be used to…

Earth and Planetary Astrophysics · Physics 2014-11-20 René Heller , Dimitris Mislis , John Antoniadis

The small sizes of low mass stars in principle provide an opportunity to find Earth-like planets and "super-Earths" in habitable zones via transits. Large area synoptic surveys like Pan-STARRS and LSST will observe large numbers of low mass…

Solar and Stellar Astrophysics · Physics 2010-12-13 H. C. Ford , W. Bhatti , L. Hebb , L. Petro , M. Richmond , J. Rogers

A large proportion of transiting planetary systems appear to possess only a single planet as opposed to multiple transiting planets. This excess of singles is indicative of significant mutual inclinations existing within a large number of…

Earth and Planetary Astrophysics · Physics 2021-07-09 Kathleen Schultz , Christopher Spalding , Konstantin Batygin