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Reliable detections of Earth-sized planets in the habitable zone remain elusive in the Kepler sample, even for M dwarfs. The Kepler sample was once thought to contain a considerable number of M dwarf stars ($T_\mathrm{eff} < 4000$ K), which…

We investigate the underlying distribution of orbital eccentricities for planets around early-to-mid M dwarf host stars. We employ a sample of 163 planets around early- to mid-M dwarfs across 101 systems detected by NASA's Kepler Mission.…

Earth and Planetary Astrophysics · Physics 2023-05-30 Sheila Sagear , Sarah Ballard

The study of planets beyond the solar system and the search for other habitable planets and life is just beginning. Ground-based (radial velocity and transits) and space-based surveys (transits and astrometry) will identify planets spanning…

Today, with the large number of detected exoplanets and improved measurements, we can reach the next step of planetary characterization. Classifying different populations of planets is not only important for our understanding of the…

Earth and Planetary Astrophysics · Physics 2017-08-23 Dolev Bashi , Ravit Helled , Shay Zucker , Christoph Mordasini

The radius of a planet is a fundamental parameter that probes its composition and habitability. Precise radius measurements are typically derived from the fraction of starlight blocked when a planet transits its host star. The wide-field…

Earth and Planetary Astrophysics · Physics 2025-11-12 Te Han , Paul Robertson , Timothy D. Brandt , Shubham Kanodia , Caleb Cañas , Avi Shporer , George Ricker , Corey Beard

The Kepler Mission has discovered thousands of exoplanets and revolutionized our understanding of their population. This large, homogeneous catalog of discoveries has enabled rigorous studies of the occurrence rate of exoplanets and…

Earth and Planetary Astrophysics · Physics 2016-12-14 Daniel Foreman-Mackey , Timothy D. Morton , David W. Hogg , Eric Agol , Bernhard Schölkopf

We analyze data from the Quarter 1-17 Data Release 24 (Q1--Q17 DR24) planet candidate catalog from NASA's Kepler mission, specifically comparing systems with single transiting planets to systems with multiple transiting planets, and…

Earth and Planetary Astrophysics · Physics 2016-11-09 Jason H. Steffen , Jeffrey L. Coughlin

Discovering other worlds the size of our own has been a long-held dream of astronomers. The transiting planets Kepler-20e and Kepler-20f, which belong to a multi-planet system, hold a very special place among the many groundbreaking…

Earth and Planetary Astrophysics · Physics 2019-05-14 Guillermo Torres , Francois Fressin

The study of the interior of the planets requires the knowledge of how certain parameters, as radius and mean density, vary according to the planet mass. The aim of this work is to use known data of the Solar System Planets and Transiting…

Earth and Planetary Astrophysics · Physics 2011-11-18 Hector Javier Durand-Manterola

The size distribution of planets with radii between 1 and $4 R_\oplus$ peaks near 1.4 and $2.2R_\oplus$, with a dip around $1.8 R_\oplus$ -- the so-called "radius valley." Recent statistical analyses suggest that planets within this valley…

Earth and Planetary Astrophysics · Physics 2025-06-02 Sho Shibata , Andre Izidoro

We compare radii based on ${\it Gaia}$ parallaxes to asteroseismic scaling relation-based radii of $\sim 300$ dwarfs $\&$ subgiants and $\sim 3600$ first-ascent giants from the ${\it Kepler}$ mission. Systematics due to temperature,…

Solar and Stellar Astrophysics · Physics 2019-11-20 Joel C. Zinn , Marc H. Pinsonneault , Daniel Huber , Dennis Stello , Keivan Stassun , Aldo Serenelli

Statistical studies of exoplanets and the properties of their host stars have been critical to informing models of planet formation. Numerous trends have arisen in particular from the rich Kepler dataset, including that exoplanets are more…

Earth and Planetary Astrophysics · Physics 2021-02-04 Jonah T. Hansen , Luca Casagrande , Michael J. Ireland , Jane Lin

We examine the effects that planetary encounters have on the moon systems of ejected gas giant planets. We conduct a suite of numerical simulations of planetary systems containing three Jupiter-mass planets (with the innermost planet at 3…

Earth and Planetary Astrophysics · Physics 2018-09-26 Ian Rabago , Jason H. Steffen

We fit a log-normal function to the M dwarf orbital surface density distribution of gas giant planets, over the mass range 1-10 times that of Jupiter, from 0.07-400 AU. We use a Markov Chain Monte Carlo approach to explore the likelihoods…

Earth and Planetary Astrophysics · Physics 2018-05-16 Michael R. Meyer , Adam Amara , Maddalena Reggiani , Sascha P. Quanz

We investigated the underlying architecture of planetary systems by deriving the distribution of planet multiplicity (number of planets) and the distribution of orbital inclinations based on the sample of planet candidates discovered by the…

Earth and Planetary Astrophysics · Physics 2015-06-05 Julia Fang , Jean-Luc Margot

Sub-Neptune-sized exoplanets represent one of the most common types of planets in the Milky Way, yet many of their properties are unknown. Here, we present a prescription to adapt the capabilities of the stellar evolution toolkit Modules…

Earth and Planetary Astrophysics · Physics 2016-11-15 Howard Chen , Leslie A. Rogers

The field of extrasolar planets has rapidly expanded to include the detection of planets with masses smaller than that of Uranus. Many of these are expected to have little or no hydrogen and helium gas and we might find Earth analogs among…

Astrophysics · Physics 2009-06-23 Diana Valencia , Dimitar D. Sasselov , Richard J. O'Connell , ;

Tidal dissipation in planetary interiors is one of the key physical mechanisms that drive the evolution of star-planet and planet-moon systems. New constraints are now obtained both in the Solar and exoplanetary systems. Tidal dissipation…

Earth and Planetary Astrophysics · Physics 2014-07-02 Mathieu Guenel , Stéphane Mathis , Françoise Remus

We present a population-level view of volatile gas species (H$_2$, He, H$_2$O, O$_2$, CO, CO$_2$, CH$_4$) distribution during the sub-Neptune to rocky planet transition, revealing in detail the dynamic nature of small planet atmospheric…

Earth and Planetary Astrophysics · Physics 2025-03-10 Collin Cherubim , Robin Wordsworth , Dan Bower , Paolo Sossi , Danica Adams , Renyu Hu
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