Results 21 to 30 of about 1,107,843 (394)

Dynamical Outcomes of Planet‐Planet Scattering [PDF]

The Astrophysical Journal, 2008
Observations in the past decade have revealed extrasolar planets with a wide range of orbital semimajor axes and eccentricities. Based on the present understanding of planet formation via core accretion and oligarchic growth, we expect that giant planets often form in closely packed configurations.
Sourav Chatterjee, Soko Matsumura, Eric B. Ford, Eric B. Ford, Frederic A. Rasio   +4 more
openaire   +4 more sources

Giant Planets [PDF]

, 2007
We review the interior structure and evolution of Jupiter, Saturn, Uranus and Neptune, and giant exoplanets with particular emphasis on constraining their global composition. Compared to the first edition of this review, we provide a new discussion of the atmospheric compositions of the solar system giant planets, we discuss the discovery of ...
Guillot, Tristan, Gautier, Daniel
openaire   +8 more sources

The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au [PDF]

Astronomical Journal, 2019
We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; from these detections and our contrast curves we infer the underlying ...
E. Nielsen, R. D. de Rosa, B. Macintosh, Jason J. Wang, J. Ruffio, E. Chiang, M. Marley, D. Saumon, D. Savransky, S. Mark Ammons, V. Bailey, T. Barman, C. Blain, J. Bulger, A. Burrows, J. Chilcote, T. Cotten, I. Czekala, R. Doyon, G. Duchêne, T. Esposito, D. Fabrycky, M. Fitzgerald, K. Follette, J. Fortney, B. Gerard, S. Goodsell, J. Graham, A. Greenbaum, P. Hibon, S. Hinkley, L. Hirsch, J. Hom, L. Hung, Rebekah Ilene Dawson, P. Ingraham, P. Kalas, Q. Konopacky, J. Larkin, Eve J. Lee, Jonathan W. Lin, J. Maire, F. Marchis, C. Marois, S. Metchev, M. Millar-Blanchaer, K. Morzinski, R. Oppenheimer, D. Palmer, J. Patience, M. Perrin, L. Poyneer, L. Pueyo, R. Rafikov, A. Rajan, J. Rameau, F. Rantakyrö, B. Ren, A. Schneider, A. Sivaramakrishnan, I. Song, R. Soummer, M. Tallis, Sandrine Thomas, K. Ward-Duong, S. Wolff   +65 more
semanticscholar   +1 more source

Tilting Planets during Planet Scattering [PDF]

The Astrophysical Journal Letters, 2021
Abstract Observational constraints on planetary spin axis have recently become possible, and they have revealed a system that favors large spin-axis misalignment, low stellar spin–orbit misalignment, and high eccentricity. To explain the origin of such systems, we propose a mechanism that could tilt the planetary spin axis during planet ...
openaire   +4 more sources

Growth model interpretation of planet size distribution [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance The discovery of numerous exoplanet systems containing diverse populations of planets orbiting very close to their host stars challenges the planet formation theories based on the solar system. Here, we focus on the planets with radii of 2–4
L. Zeng, S. Jacobsen, D. Sasselov, M. Petaev, A. Vanderburg, M. López-Morales, J. Pérez-Mercader, T. Mattsson, Gongjie Li, Matthew Z. Heising, A. Bonomo, M. Damasso, T. Berger, H. Cao, A. Levi, R. Wordsworth   +15 more
semanticscholar   +1 more source

Planetary Temperatures in the Presence of an Inert, Nonradiative Atmosphere

Quaestiones Geographicae, 2020
This study considers solid planets at about 300 K and an inert atmosphere having no interaction with associated radiation. Processes considered include transfer of energy from the surface skin to underlying layers depending on thermal properties ...
Nicol John Leslie
doaj   +1 more source

Planetary plasma measurement technology

地球与行星物理论评, 2021
Plasma is a key element of planetary environment, which is critical for understanding the planetary evolution history and mechanism. The plasma environment is related to the magnetic field and atmosphere status of the planet.
Linggao Kong, Bin Su, Yibing Guan, Weihua Bai, Aibing Zhang   +4 more
doaj   +1 more source

The Disk Substructures at High Angular Resolution Project (DSHARP). VII. The Planet–Disk Interactions Interpretation [PDF]

Astrophysical Journal, 2018
The Disk Substructures at High Angular Resolution Project (DSHARP) provides a large sample of protoplanetary disks with substructures that could be induced by young forming planets.
Shangjia Zhang, Zhaohuan Zhu, Jane Huang, V. Guzm'an, S. Andrews, T. Birnstiel, C. Dullemond, J. Carpenter, A. Isella, L. P'erez, M. Benisty, D. Wilner, C. Baruteau, X. Bai, L. Ricci   +14 more
semanticscholar   +1 more source

Water vapour in the atmosphere of the habitable-zone eight-Earth-mass planet K2-18 b [PDF]

Nature Astronomy, 2019
In the past decade, observations from space and the ground have found water to be the most abundant molecular species, after hydrogen, in the atmospheres of hot, gaseous extrasolar planets1–5. Being the main molecular carrier of oxygen, water is a tracer
A. Tsiaras, I. Waldmann, G. Tinetti, J. Tennyson, S. Yurchenko   +4 more
semanticscholar   +1 more source

Flower production prospects and sustainability challenges in Ethiopia: A systematic review

Frontiers in Environmental Science, 2022
The people, planet, and profit sustainability concerns emerged as a novel concept in the ethical business governance system in the floriculture industry. In Ethiopia, however, the sectoral sustainability concern is in its infant stage.
Shiferaw Mebrat, Alemu Degwale, Temesgen Mekonen, Amare Mebrat   +3 more
doaj   +1 more source