Results 1 to 10 of about 2,834 (210)

Solving protoplanetary structure equations using Adomian decomposition method [PDF]

Heliyon, 2021
In this paper, the distribution of thermodynamic variables in the protoplanets formed by gravitational instability in the mass range 0.3−10MJ (1MJ=1 Jupiter mass = 1.8986×1030 gm) is investigated in their initial state by solving the structure equations ...
Gour Chandra Paul, Shahinur Khatun, Md. Nuruzzaman, Dipankar Kumar, Md. Emran Ali, Farjana Bilkis, Mrinal Chandra Barman   +6 more
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An effective method in investigating structures of polytropic protoplanets formed via gravitational instability [PDF]

Heliyon, 2022
In this article, we have reinvestigated the initial distribution of thermodynamic variables inside the protoplanets formed via gravitational instability having mass range 0.3−10MJ (1MJ=1.8986×1030 gm) by an embedded RKACeM(4,4) method assuming that the ...
Gour Chandra Paul, Mrinal Chandra Barman, Hafijur Rahman   +2 more
doaj   +2 more sources

Formation of bridgmanite-enriched layer at the top lower-mantle during magma ocean solidification [PDF]

Nature Communications, 2020
Following the impact of the protoplanet Theia, planet Earth likely transformed into a magma ocean. New high temperature and pressure experiments by Xie et al.
Longjian Xie, Akira Yoneda, Daisuke Yamazaki, Geeth Manthilake, Yuji Higo, Yoshinori Tange, Nicolas Guignot, Andrew King, Mario Scheel, Denis Andrault   +9 more
doaj   +2 more sources

Unveiling protoplanetary structure equations: Semi-analytical solutions via the homotopy analysis method [PDF]

Heliyon
This paper revisits the distribution of thermodynamic variables within initial protoplanets formed via gravitational instability (GI) across a broad mass spectrum ranging from 0.3MJ to 10MJ (where 1MJ denotes 1 Jupiter mass, equal to 1.8986×1030 g ...
Gour Chandra Paul, Tauhida, Md Nuruzzaman, Md Zakir Hossain, Mrinal Chandra Barman, Dipankar Kumar   +5 more
doaj   +2 more sources

The Giant Accreting Protoplanet Survey (GAPlanetS)—Results from a 6 yr Campaign to Image Accreting Protoplanets

The Astronomical Journal, 2023
Accreting protoplanets are windows into planet formation processes, and high-contrast differential imaging is an effective way to identify them. We report results from the Giant Accreting Protoplanet Survey (GAPlanetS), which collected H α differential ...
Katherine B. Follette, Laird M. Close, Jared R. Males, Kimberly Ward-Duong, William O. Balmer, Jéa Adams Redai, Julio Morales, Catherine Sarosi, Beck Dacus, Robert J. De Rosa, Fernando Garcia Toro, Clare Leonard, Bruce Macintosh, Katie M. Morzinski, Wyatt Mullen, Joseph Palmo, Raymond Nzaba Saitoti, Elijah Spiro, Helena Treiber, Kevin Wagner, Jason Wang, David Wang, Alex Watson, Alycia J. Weinberger   +23 more
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UV-optical Emission of AB Aur b Is Consistent with Scattered Stellar Light

The Astronomical Journal, 2023
The proposed protoplanet AB Aur b is a spatially concentrated emission source imaged in the millimeter-wavelength disk gap of the Herbig Ae/Be star AB Aur. Its near-infrared spectrum and absence of strong polarized light have been interpreted as evidence
Yifan Zhou, Brendan P. Bowler, Haifeng Yang, Aniket Sanghi, Gregory J. Herczeg, Adam L. Kraus, Jaehan Bae, Feng Long, Katherine B. Follette, Kimberly Ward-Duong, Zhaohuan Zhu, Lauren Biddle, Laird M. Close, Lillian Yushu Jiang, Ya-Lin Wu   +14 more
doaj   +1 more source

MagAO-X and HST High-contrast Imaging of the AS209 Disk at Hα

The Astronomical Journal, 2023
The detection of emission lines associated with accretion processes is a direct method for studying how and where gas giant planets form, how young planets interact with their natal protoplanetary disk, and how volatile delivery to their atmosphere takes
Gabriele Cugno, Yifan Zhou, Thanawuth Thanathibodee, Per Calissendorff, Michael R. Meyer, Suzan Edwards, Jaehan Bae, Myriam Benisty, Edwin Bergin, Matthew De Furio, Stefano Facchini, Jared R. Males, Laird M. Close, Richard D. Teague, Olivier Guyon, Sebastiaan Y. Haffert, Alexander D. Hedglen, Maggie Kautz, Andrés Izquierdo, Joseph D. Long, Jennifer Lumbres, Avalon L. McLeod, Logan A. Pearce, Lauren Schatz, Kyle Van Gorkom   +24 more
doaj   +1 more source

Prograde rotation of protoplanets by accretion of pebbles in a gaseous environment [PDF]

, 2010
We perform hydrodynamical simulations of the accretion of pebbles and rocks onto protoplanets of a few hundred kilometres in radius, including two-way drag force coupling between particles and the protoplanetary disc gas.
Adachi, Alexander, Anders Johansen, Bizzarro, Brandenburg, Brauer, Brown, Brown, Canup, Chiang, Cuzzi, Cuzzi, Davis, Dominik, Dones, Dones, Farinella, Goldreich, Haghighipour, Hayashi, Jewitt, Johansen, Johansen, Kato, Kokubo, Kretke, Kryszczyńska, Lacerda, Laskar, Lissauer, Lommen, Lunine, Machida, McAdoo, Morbidelli, Muto, Nakagawa, Pedro Lacerda, Rodmann, Safronov, Schlichting, Sheppard, Sicilia-Aguilar, Testi, Throop, Weidenschilling, Weidenschilling, Weidenschilling, Wilner, Yang, Youdin   +50 more
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Planet migration: self-gravitating radiation hydrodynamical models of protoplanets with surfaces [PDF]

, 2010
We calculate radial migration rates of protoplanets in laminar minimum mass solar nebula discs using three-dimensional self-gravitating radiation hydrodynamical (RHD) models.
Alexander, Alibert, Alibert, Ayliffe, Ayliffe, Balbus, Baruteau, Baruteau, Baruteau, Bate, Bate, Bate, Ben A. Ayliffe, Benz, Benz, Boley, Bryden, Crida, Crida, D'Angelo, D'Angelo, D'Angelo, D'Angelo, De Val-Borro, Goldreich, Ida, Ivanov, Jang-Condell, Klahr, Kley, Kley, Kley, Korycansky, Korycansky, Li, Lodato, Lubow, Lubow, Masset, Masset, Masset, Matthew R. Bate, Mayor, Monaghan, Monaghan, Monaghan, Mordasini, Morohoshi, Morris, Nelson, Nelson, Nelson, Nelson, Nelson, Ogilvie, Paardekooper, Paardekooper, Paardekooper, Paardekooper, Paardekooper, Pepliński, Pepliński, Pierens, Pollack, Price, Price, Shakura, Springel, Syer, Tanaka, Ward, Ward, Whitehouse, Whitehouse, Yu   +74 more
core   +1 more source

Evolution of Stars on The Establishment of The Solar System and Planetary System

Jurnal Ilmiah Pendidikan Fisika Al-Biruni, 2016
This research is the literature studies that provide an introduction to the theory of the formation and early evolution of solar system and planetary systems.
Khilyatul Khoiriyah
doaj   +1 more source