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We investigate the distributions of the orbital period ratios of adjacent planets in high multiplicity \kepler\ systems (four or more planets) and low multiplicity systems (two planets). Modeling the low multiplicity sample as essentially…

地球与行星天体物理 · 物理学 2015-06-12 Jason H. Steffen

The Kepler mission discovery of candidate transiting exoplanets (KOIs) enables a plethora of ensemble analysis of the architecture and properties of exoplanetary systems. We compare the observed transit durations of KOIs to a synthetic…

太阳与恒星天体物理 · 物理学 2016-03-02 Peter Plavchan , Christopher Bilinski , Thayne Currie

Approximate Bayesian Computation (ABC) is a popular computational method for likelihood-free Bayesian inference. The term "likelihood-free" refers to problems where the likelihood is intractable to compute or estimate directly, but where it…

统计理论 · 数学 2014-07-21 Stuart Barber , Jochen Voss , Mark Webster

[Abridged] Context. The CoRoT space mission has been searching for transiting planets since the end of December 2006. Aims. We aim to investigate the capability of CoRoT to detect small-size transiting planets in short-period orbits, and to…

Kepler-62f is the first exoplanet small enough to plausibly have a rocky composition orbiting within the habitable zone (HZ) discovered by the Kepler Mission. The planet is 1.4 times the size of the Earth and has an orbital period of 267…

地球与行星天体物理 · 物理学 2019-05-16 William Borucki , Susan E. Thompson , Eric Agol , Christina Hedges

We present an analytical and numerical study of the orbital migration and resonance capture of fictitious two-planet systems with masses in the super-Earth range undergoing Type-I migration. We find that, depending on the flare index and…

地球与行星天体物理 · 物理学 2017-06-28 X. S. Ramos , C. Charalambous , P. Benítez-Llambay , C. Beaugé

Launched on April 2018, NASA's Transiting Exoplanet Survey Satellite (TESS) has been performing a wide-field survey for exoplanets orbiting stars with a goal of producing a rich database for follow-on studies. Here we present estimates of…

地球与行星天体物理 · 物理学 2019-08-14 Jonathan H. Jiang , Xuan Ji , Nicolas Cowan , Renyu Hu , Zonghong Zhu

We report on a study of eclipse timing variations in contact binary systems, using long-cadence lightcurves in the Kepler archive. As a first step, 'observed minus calculated' (O-C) curves were produced for both the primary and secondary…

太阳与恒星天体物理 · 物理学 2014-12-24 K. Tran , A. Levine , S. Rappaport , T. Borkovits , Sz. Csizmadia , B. Kalomeni

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…

地球与行星天体物理 · 物理学 2021-02-04 Jonah T. Hansen , Luca Casagrande , Michael J. Ireland , Jane Lin

One of the fundamental questions in astronomy is how planetary systems form and evolve. Measuring the planetary occurrence and architecture as a function of time directly addresses this question. In the fourth paper of the Planets Across…

地球与行星天体物理 · 物理学 2023-11-01 Jia-Yi Yang , Di-Chang Chen , Ji-Wei Xie , Ji-Lin Zhou , Subo Dong , Zi Zhu , Zheng Zheng , Chao Liu , Weikai Zong , Ali Luo

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…

地球与行星天体物理 · 物理学 2019-05-14 Guillermo Torres , Francois Fressin

We present results from a data challenge posed to the radial velocity (RV) community: namely, to quantify the Bayesian "evidence" for n={0,1,2,3} planets in a set of synthetically generated RV datasets containing a range of planet signals.…

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

We present estimates for the occurrence rates of hot Jupiters around dwarf stars based on data from the Transiting Exoplanet Survey Satellite (TESS) Prime Mission. We take 97 hot Jupiters orbiting 198,721 AFG dwarf stars (ranging in mass…

地球与行星天体物理 · 物理学 2022-08-09 Maya Beleznay , Michelle Kunimoto

The number of exoplanets detected using gravitational microlensing technique is currently larger than 200, which enables population studies. Microlensing is uniquely sensitive to low-mass planets orbiting at separations of several…

地球与行星天体物理 · 物理学 2024-06-05 P. Mroz , R. Poleski

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 constrain the intrinsic architecture of Kepler planetary systems by modeling the observed multiplicities of the transiting planets (tranets) and their transit timing variations (TTVs). We robustly determine that the fraction of Sun-like…

地球与行星天体物理 · 物理学 2018-07-04 Wei Zhu , Cristobal Petrovich , Yanqin Wu , Subo Dong , Jiwei Xie

The Transiting Exoplanet Survey Satellite (TESS) has discovered $\sim$5000 planets and planet candidates after three and a half years of observations. With a planned second Extended Mission spanning Years 5 - 7 on the horizon, now is the…

地球与行星天体物理 · 物理学 2022-06-01 Michelle Kunimoto , Joshua N. Winn , George R. Ricker , Roland Vanderspek

The Pan-Planets survey observed an area of 42 sq deg. in the galactic disk for about 165 hours. The main scientific goal of the project is the detection of transiting planets around M dwarfs. We establish an efficient procedure for…