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Related papers: Where can we find Super-Earths?

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Kepler's observation shows that many of the detected planets are super-Earths. They are inside a range of critical masses overlapping the core masses (2-20 $M_{\bigoplus}$), which would trigger the runaway accretion and develop the gas…

Earth and Planetary Astrophysics · Physics 2021-12-08 Wei Zhong , Cong Yu

A large fraction of giant planets have gaseous envelopes that are limited to about 10 % of their total mass budget. Such planets are present in the Solar System (Uranus, Neptune) and are frequently observed in short periods around other…

Earth and Planetary Astrophysics · Physics 2017-11-01 Michiel Lambrechts , Elena Lega

Terrestrial planetary systems may exist around nearby stars as the Earth-sized counterparts to the many giant planets already discovered within the solar neighborhood. In this chapter we first discuss the numerous techniques which have been…

Astrophysics · Physics 2015-06-24 W. A. Traub , K. W. Jucks

While giant planet occurrence rates increase with stellar mass, occurrence rates of close-in super-Earths decrease. This is in contradiction to the expectation that the total mass of the planets in a system scale with the protoplanetary…

Earth and Planetary Astrophysics · Physics 2022-11-30 David Vallet , Anna C. Childs , Rebecca G. Martin , Mario Livio , Stephen Lepp

In the last few years astronomical surveys have expanded the reach of planetary science into the realm of small and dense extrasolar worlds. These share a number of characteristics with the terrestrial and icy planetary objects of the Solar…

Earth and Planetary Astrophysics · Physics 2024-09-20 Tim Lichtenberg , Yamila Miguel

In protoplanetary disks, sufficiently massive planets excite pressure bumps, which can then be preferred locations for forming new planet cores. We discuss how this loop may affect the architecture of multi-planet systems, and compare our…

Earth and Planetary Astrophysics · Physics 2024-01-15 Wenrui Xu , Songhu Wang

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 , ;

In the coming decades, research in extrasolar planets aims to advance two goals: 1) detecting and characterizing low-mass planets increasingly similar to the Earth, and 2) improving our understanding of planet formation. We present a new…

Astrophysics · Physics 2007-05-23 Jason H. Steffen , B. Scott Gaudi , Eric B. Ford , Eric Agol , Mathew J. Holman

The Solar System includes two planets --- Mercury and Mars --- significantly less massive than Earth, and all evidence indicates that planets of similar size orbit many stars. In fact, one of the first exoplanets to be discovered is a…

Earth and Planetary Astrophysics · Physics 2015-06-17 E. Sinukoff , B. Fulton , L. Scuderi , E. Gaidos

As gas giant planets evolve, they may scatter other planets far from their original orbits to produce hot Jupiters or rogue planets that are not gravitationally bound to any star. Here, we consider planets cast out to large orbital…

Earth and Planetary Astrophysics · Physics 2015-06-23 Benjamin C. Bromley , Scott J. Kenyon

The detailed interior structure models of super-Earth planets show that there is degeneracy in the possible bulk compositions of a super-Earth at a given mass and radius, determined via radial velocity and transit measurements,…

Earth and Planetary Astrophysics · Physics 2015-05-18 Robert A. Marcus , Dimitar Sasselov , Lars Hernquist , Sarah T. Stewart

NASA's TESS mission is expected to discover hundreds of M dwarf planets. However, few studies focus on how planets form around low-mass stars. We aim to better characterize the formation process of M dwarf planets to fill this gap and aid…

Earth and Planetary Astrophysics · Physics 2021-03-17 Brianna Zawadzki , Daniel Carrera , Eric Ford

The search for extrasolar Earth-like planets is underway. Over 100 extrasolar giant planets are known to orbit nearby sun-like stars, including several in multiple-planet systems. These planetary systems are stepping stones for the search…

Astrophysics · Physics 2009-11-07 S. Seager

Complex structures, including sharp edges, rings and gaps, have been commonly observed in protoplanetary disks with or without planetary candidates. Here we consider the possibility that they are the intrinsic consequences of angular…

Earth and Planetary Astrophysics · Physics 2026-02-04 Zhuoya Cao , Ya-Ping Li , Douglas N. C. Lin , Shude Mao

Having discovered that Earth-sized planets are common, we are now embarking on a journey to determine if Earth-like planets are also common. Finding Earth-like planets is one of the most compelling endeavors of the 21st century - leading us…

With improving methods and surveys, the young field of extrasolar planets has recently expanded into a qualitatively new domain - terrestrial (mostly rocky) planets. The first such planets were discovered during the past year, judging by…

Astrophysics · Physics 2008-11-26 Diana Valencia , Dimitar D. Sasselov , Rirchard J. O'Connell

The core-accretion model predicts that planetary cores as massive as super-Earths undergo runaway gas accretion to become gas giants. However, the exoplanet census revealed the prevalence of super-Earths close to their host stars, which…

Earth and Planetary Astrophysics · Physics 2018-11-14 Masahiro Ogihara , Yasunori Hori

The Kepler observations indicate that many exoplanets are super-Earths, which brings about a puzzle for the core-accretion scenario. Since observed super-Earths are in the range of critical mass, they would accrete gas efficiently and…

Earth and Planetary Astrophysics · Physics 2017-12-20 Cong Yu

Gas giant planets are far easier than terrestrial planets to detect around other stars, and are thought to form much more quickly than terrestrial planets. Thus, in systems with giant planets, the late stages of terrestrial planet formation…

Astrophysics · Physics 2009-11-11 Sean N. Raymond

In this paper we investigate the possibility of a migration-induced resonance locking in systems containing three planets, namely an Earth analog, a super-Earth and a gas giant. The planets have been listed in order of increasing orbital…

Earth and Planetary Astrophysics · Physics 2015-06-18 Edyta Podlewska-Gaca , Ewa Szuszkiewicz