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Transit and radial velocity models were applied to archival data in order to examine exoplanet properties, in particular for the recently discovered super-Earth GJ 357b. There is however considerable variation in estimated model parameters…

地球与行星天体物理 · 物理学 2021-12-08 Shi Yuan Ng , Zhou Jiadi , Caglar Puskullu , Timothy Banks , Edwin Budding , Michael D. Rhodes

In this work we empirically measure the detection efficiency of Kepler pipeline used to create the final Kepler Threshold Crossing Event (TCE; Twicken et al. 2016) and planet candidate catalogs (Thompson et al. 2018), a necessary ingredient…

The spatial distribution of exoplanets in the Galaxy is important for our understanding of planet formation and evolution. We aim to determine the spatial gradients of exoplanet occurrence in the Solar neighbourhood and in the vicinity of…

地球与行星天体物理 · 物理学 2020-02-26 Andrii Maliuk , Jan Budaj

The Kepler mission has been fantastic for asteroseismology of solar-type stars, but the targets are typically quite distant. As a consequence, the reliability of asteroseismic modeling has been limited by the precision of additional…

太阳与恒星天体物理 · 物理学 2017-09-13 Travis Metcalfe , Orlagh Creevey , Jennifer van Saders

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…

地球与行星天体物理 · 物理学 2020-03-04 Andrew R. Neil , Leslie A. Rogers

While stellar metallicity has long been known to correlate with planetary properties, the galactic metallicity gradient alone does not account for the trend. It is therefore possible that there exists some time-dependent component to planet…

地球与行星天体物理 · 物理学 2025-07-30 Christopher Lam , Sarah Ballard , Sheila Sagear , Kathryne J. Daniel

We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching four years of Kepler time series photometry (Data Release 25, Q1-Q17). The catalog contains 8054 KOIs of which 4034 are planet candidates…

The Kepler mission has discovered thousands of exoplanets around various stars with different spectral types (M, K, G, and F) and thus different masses and effective temperatures. Previous studies have shown that the planet occurrence rate,…

地球与行星天体物理 · 物理学 2020-04-01 Jia-Yi Yang , Ji-Wei Xie , Ji-Lin Zhou

The orbital distribution of giant planets is crucial for understanding how terrestrial planets form and predicting yields of exoplanet surveys. Here, we derive giant planets occurrence rates as a function of orbital period by taking into…

太阳与恒星天体物理 · 物理学 2019-04-03 Rachel B. Fernandes , Gijs D. Mulders , Ilaria Pascucci , Christoph Mordasini , Alexandre Emsenhuber

Data from Kepler's first 136 days of operation are analyzed to determine the distribution of exoplanets with respect to radius, period, and host-star spectral type. The analysis is extrapolated to estimate the percentage of terrestrial,…

地球与行星天体物理 · 物理学 2015-05-30 Wesley A. Traub

We use the Robo-AO survey of Kepler planetary candidate host stars, the largest adaptive optics survey yet performed, to measure the recovery rate of close stellar binaries in Gaia DR2. We find that Gaia recovers binaries down to 1" at…

Aims: We predict the exoplanet yield of a space-based mid-infrared nulling interferometer using Monte Carlo simulations. We quantify the number and properties of detectable exoplanets and identify those target stars that have the highest or…

地球与行星天体物理 · 物理学 2017-12-27 J. Kammerer , S. P. Quanz

The transit technique is responsible for the majority of exoplanet discoveries to date. Characterizing these planets involves careful modeling of their transit profiles. A common technique involves expressing the transit duration using a…

地球与行星天体物理 · 物理学 2022-08-17 Gregory J. Gilbert , Mason G. MacDougall , Erik A. Petigura

Wide-field surveys for transiting planets, such as the NASA Kepler and TESS missions, are usually conducted without knowing which stars have binary companions. Unresolved and unrecognized binaries give rise to systematic errors in planet…

地球与行星天体物理 · 物理学 2018-05-23 L. G. Bouma , Kento Masuda , J. N. Winn

In order to gain a better understanding of planet formation and evolution, it is important to examine the statistics of exoplanets in the Galactic context. By combining information on stellar elemental abundances and kinematics, we…

地球与行星天体物理 · 物理学 2021-12-22 Dolev Bashi , Shay Zucker

We present a study on the effect of undetected stellar companions on the derived planetary radii for the Kepler Objects of Interest (KOIs). The current production of the KOI list assumes that the each KOI is a single star. Not accounting…

地球与行星天体物理 · 物理学 2016-10-25 David R. Ciardi , Charles A. Beichman , Elliott P. Horch , Steve B. Howell

We provide a preliminary estimate of the performance of reflex astrometry on Earth-like planets in the habitable zones of nearby stars. In Monte Carlo experiments, we analyze large samples of astrometric data sets with low to moderate…

地球与行星天体物理 · 物理学 2011-02-11 Robert A. Brown

We characterize the eccentricity distribution of a sample of ~50 short-period planet candidates using transit and occultation measurements from NASA's Kepler Mission. First, we evaluate the sensitivity of our hierarchical Bayesian modeling…

地球与行星天体物理 · 物理学 2016-04-06 Megan Shabram , Brice-Olivier Demory , Jessi Cisewski , Eric B. Ford , Leslie Rogers

NASA's Kepler Space Telescope was designed to determine the frequency of Earth-sized planets orbiting Sun-like stars, but these planets are on the very edge of the mission's detection sensitivity. Accurately determining the occurrence rate…

地球与行星天体物理 · 物理学 2018-02-14 Christopher J. Shallue , Andrew Vanderburg