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The radius-period distribution of exoplanets has been characterized by the \textit{Kepler} survey, and the empirical mass-radius relation by the subset of \textit{Kepler} planets with mass measurements. We combine the two in order to…

Earth and Planetary Astrophysics · Physics 2020-03-04 Andrew R. Neil , Leslie A. Rogers

Transiting exoplanets in multi-planet systems have non-Keplerian orbits which can cause the times and durations of transits to vary. The theory and observations of transit timing variations (TTV) and transit duration variations (TDV) are…

Earth and Planetary Astrophysics · Physics 2025-05-01 Eric Agol , Daniel Fabrycky

We present a new analytical method to identify potential missed planets in multiplanet systems found via transit surveys such as those conducted by Kepler and TESS. Our method depends on quantifying a system's dynamical packing in terms of…

Earth and Planetary Astrophysics · Physics 2020-11-09 Ana Luisa Tió Humphrey , Elisa V. Quintana

We present simulations of multi-year RV follow up campaigns of the {\it TESS} small exoplanet yield on the Automated Planet Finder telescope, using four different schemes to sample the transiting planets' RV phase curves. For planets below…

Earth and Planetary Astrophysics · Physics 2018-11-28 Jennifer Burt , Bradford P. Holden , Angie Wolfgang , L. G. Bouma

We present a framework to conservatively estimate the probability that any particular planet-like transit signal observed by the Kepler mission is in fact a planet, prior to any ground-based follow-up efforts. We use Monte Carlo methods…

Earth and Planetary Astrophysics · Physics 2015-05-27 Timothy D. Morton , John Asher Johnson

A re-analysis of Gliese 581 HARPS and HIRES precision radial velocity data was carried out with a Bayesian multi-planet Kepler periodogram (from 1 to 6 planets) based on a fusion Markov chain Monte Carlo algorithm. In all cases the analysis…

Solar and Stellar Astrophysics · Physics 2015-05-20 Philip C. Gregory

Twenty-four years after the discoveries of the first exoplanets, the radial-velocity (RV) method is still one of the most productive techniques to detect and confirm exoplanets. But stellar magnetic activity can induce RV variations large…

When an exoplanet passes in front of its host star, the resulting eclipse causes an observable decrease in stellar flux, and when multiple such transits are detected, the orbital period of the exoplanet can be determined. Over the past six…

Earth and Planetary Astrophysics · Physics 2025-05-22 Dillon Bass , Daniel Fabrycky

We present a database of well determined orbital parameters of exoplanets. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements as reported in the…

A new catalogue of extrasolar planets is presented by re-analysing a selection of published radial velocity data sets using EXOFIT (Balan & Lahav 2009). All objects are treated on an equal footing within a Bayesian framework, to give…

Earth and Planetary Astrophysics · Physics 2012-12-20 Morgan D. J. Hollis , Sreekumar T. Balan , Greg Lever , Ofer Lahav

The technique of radial velocity (RV) has produced spectacular discoveries of short-period Jovian mass objects around a fraction (5 to 10%) of nearby G stars. Although we expect Jovian planets to be located in long-period orbits of decades…

Astrophysics · Physics 2009-10-31 J. A. Eisner , S. R. Kulkarni

The proposed Transiting Exoplanet Survey Satellite (TESS) will survey the entire sky to locate the nearest and brightest transiting extrasolar planets with orbital periods up to about 36 days. Here we estimate the number and kind of…

Astrophysics · Physics 2008-12-09 Timothy M. Brown , David W. Latham

We report the Transiting Exoplanet Survey Satellite ($TESS$) detection of a multi-planet system orbiting the $V=10.9$ K0 dwarf TOI 125. We find evidence for up to five planets, with varying confidence. Three high signal-to-noise transit…

Earth and Planetary Astrophysics · Physics 2019-10-16 Samuel N. Quinn , Juliette C. Becker , Joseph E. Rodriguez , Sam Hadden , Chelsea X. Huang , Timothy D. Morton , Fred Adams , David Armstrong , Jason D. Eastman , Jonathan Horner , Stephen R. Kane , Jack J. Lissauer , Joseph D. Twicken , Andrew Vanderburg , Rob Wittenmyer , George R. Ricker , Roland K. Vanderspek , David W. Latham , Sara Seager , Joshua N. Winn , Jon M. Jenkins , Eric Agol , Khalid Barkaoui , Charles A. Beichman , François Bouchy , L. G. Bouma , Artem Burdanov , Jennifer Campbell , Roberto Carlino , Scott M. Cartwright , David Charbonneau , Jessie L. Christiansen , David Ciardi , Karen A. Collins , Kevin I. Collins , Dennis M. Conti , Ian J. M. Crossfield , Tansu Daylan , Jason Dittmann , John Doty , Diana Dragomir , Elsa Ducrot , Michael Gillon , Ana Glidden , Robert F. Goeke , Erica J. Gonzales , Krzysztof G. Hełminiak , Elliott P. Horch , Steve B. Howell , Emmanuel Jehin , Eric L. N. Jensen , John F. Kielkopf , Martti H. Kristiansen , Nicholas Law , Andrew W. Mann , Maxime Marmier , Rachel A. Matson , Elisabeth Matthews , Tsevi Mazeh , Mayuko Mori , Felipe Murgas , Catriona Murray , Norio Narita , Louise D. Nielsen , Gaël Ottoni , Enric Palle , Rafał Pawłaszek , Francesco Pepe , Jerome Pitogo de Leon , Francisco J. Pozuelos , Howard M. Relles , Joshua E. Schlieder , Daniel Sebastian , Damien Ségransan , Avi Shporer , Keivan G. Stassun , Motohide Tamura , Andrei Tokovinin , Stéphane Udry , Ian Waite , Carl Ziegler

Both direct and indirect methods of exoplanet detection rely upon detailed knowledge of the potential host stars. Such stellar characterization allows for accurate extraction of planetary properties, as well as contributing to our overall…

Earth and Planetary Astrophysics · Physics 2023-07-26 Emilie R. Simpson , Tara Fetherolf , Stephen R. Kane , Joshua Pepper , Teo Mocnik , Paul A. Dalba

NASA's Kepler Space Telescope has successfully discovered thousands of exoplanet candidates using the transit method, including hundreds of stars with multiple transiting planets. In order to estimate the frequency of these valuable…

Earth and Planetary Astrophysics · Physics 2016-04-20 Joshua Brakensiek , Darin Ragozzine

We present an analysis of the significantly expanded HARPS 2011 radial velocity data set for GJ 581 that was presented by Forveille et al. (2011). Our analysis reaches substantially different conclusions regarding the evidence for a…

Earth and Planetary Astrophysics · Physics 2015-06-05 Steven S. Vogt , R. Paul Butler , Nader Haghighipour

The precise Doppler method for measuring stellar radial velocities (RV) is a fundamental technique in modern astronomy. This method records a star's spectrum and detects periodic Doppler shifts in its spectral features, which indicate the…

Earth and Planetary Astrophysics · Physics 2024-10-16 Trifon Trifonov

We report the discovery of long-period radial velocity (RV) variations in six intermediate-mass K-giant stars using precise RV measurements. These discoveries are part of the Search for Exoplanets around Northern Circumpolar Stars (SENS)…

Earth and Planetary Astrophysics · Physics 2018-08-06 Gwanghui Jeong , Inwoo Han , Myeong-Gu Park , Artie P. Hatzes , Tae-Yang Bang , Shenghong Gu , Jinming Bai , Byeong-Cheol Lee

Of the hundreds of exoplanets discovered using the radial velocity technique, many are orbiting close to their host stars with periods less than 10 days. One of these, HD 63454, is a young active K dwarf which hosts a Jovian planet in a…

We analyze the possibilities of detection of hypothetical exoplanets in coorbital motion from synthetic radial velocity (RV) signals, taking into account different types of stable planar configurations, orbital eccentricities and mass…

Earth and Planetary Astrophysics · Physics 2015-06-03 C. A. Giuppone , P. Benitez-Llambay , C. Beauge
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