Results 101 to 110 of about 55,496 (241)

Zirconium isotope composition indicates s‐process depletion in samples returned from asteroid Ryugu

Meteoritics &Planetary Science, Volume 60, Issue 1, Page 3-16, January 2025.
Abstract Nucleosynthetic isotope variations are powerful tracers to determine genetic relationships between meteorites and planetary bodies. They can help to link material collected by space missions to known meteorite groups. The Hayabusa 2 mission returned samples from the Cb‐type asteroid (162173) Ryugu.
Maria Schönbächler, Manuela A. Fehr, Tetsuya Yokoyama, Ikshu Gautam, Nao Nakanishi, Yoshinari Abe, Jérôme Aléon, Conel Alexander, Sachiko Amari, Yuri Amelin, Ken‐ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon‐Gak Choi, Nicolas Dauphas, Andrew M. Davis, Tommaso Di Rocco, Wataru Fujiya, Ryota Fukai, Makiko K. Haba, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor Ireland, Akira Ishikawa, Shoichi Itoh, Noriyuki Kawasaki, Noriko T. Kita, Koki Kitajima, Thorsten Kleine, Shintaro Komatani, Alexander N. Krot, Ming‐Chang Liu, Yuki Masuda, Mayu Morita, Kazuko Motomura, Frédéric Moynier, Izumi Nakai, Kazuhide Nagashima, Ann Nguyen, Larry Nittler, Morihiko Onose, Andreas Pack, Changkun Park, Laurette Piani, Liping Qin, Sara Russell, Naoya Sakamoto, Lauren Tafla, Haolan Tang, Kentaro Terada, Yasuko Terada, Tomohiro Usui, Sohei Wada, Meenakshi Wadhwa, Richard J. Walker, Katsuyuki Yamashita, Qing‐Zhu Yin, Shigekazu Yoneda, Edward D. Young, Hiroharu Yui, Ai‐Cheng Zhang, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Kanako Sakamoto, Hikaru Yabuta, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tatsuaki Okada, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Sei‐ichiro Watanabe, Makoto Yoshikawa, Shogo Tachibana, Hisayoshi Yurimoto   +89 more
wiley   +1 more source

Kaleidoscope of irradiated disks: MUSE observations of proplydsin the Orion Nebula Cluster. I. Sample presentation and ionization front sizes [PDF]

Astronomy & Astrophysics
In the Orion Nebula Cluster (ONC), protoplanetary disks exhibit ionized gas clouds in the form of a striking teardrop shape as massive stars irradiate the disk material.
M. Aru, K. Maucó, C. Manara, T. J. Haworth, S. Facchini, A. F. McLeod, A. Miotello, M. Petr-Gotzens, M. Robberto, G. Rosotti, S. Vicente, A. Winter, M. Ansdell   +12 more
semanticscholar   +1 more source

Towards Initial Mass Functions for Asteroids and Kuiper Belt Objects

, 2010
Our goal is to understand primary accretion of the first planetesimals. The primitive meteorite record suggests that sizeable planetesimals formed in the asteroid belt over a period longer than a million years, each composed entirely of an unusual, but ...
Bottke, William F., Cuzzi, Jeffrey N., Hogan, Robert C.   +2 more
core   +1 more source

The effect of a planet on the dust distribution in a 3D protoplanetary disk [PDF]

, 2007
Aims: We investigate the behaviour of dust in protoplanetary disks under the action of gas drag in the presence of a planet. Our goal is twofold: to determine the spatial distribution of dust depending on grain size and planet mass, and therefore to ...
Fouchet, L., Gonzalez, J. -F., Maddison, S. T., Murray, J. R.   +3 more
core   +3 more sources

Magma Ocean Evolution at Arbitrary Redox State

Journal of Geophysical Research: Planets, Volume 129, Issue 12, December 2024.
Abstract Interactions between magma oceans and overlying atmospheres on young rocky planets leads to an evolving feedback of outgassing, greenhouse forcing, and mantle melt fraction. Previous studies have predominantly focused on the solidification of oxidized Earth‐similar planets, but the diversity in mean density and irradiation observed in the low ...
Harrison Nicholls, Tim Lichtenberg, Dan J. Bower, Raymond Pierrehumbert   +3 more
wiley   +1 more source

Hybrid Mechanisms for Gas/Ice Giant Planet Formation [PDF]

Astrophys.J. 629 (2005) 549-555, 2004
The effects of gas pressure gradients on the motion of solid grains in the solar nebula substantially enhances the efficiency of forming protoplanetary cores in the standard core accretion model in 'hybrid' scenarios for gas/ice giant planet formation.
arxiv   +1 more source

Modeling the Jovian subnebula: I - Thermodynamical conditions and migration of proto-satellites [PDF]

, 2005
We have developed an evolutionary turbulent model of the Jovian subnebula consistent with the extended core accretion formation models of Jupiter described by Alibert et al. (2005b) and derived from Alibert et al. (2004,2005a).
Alibert, Alibert, Alibert, Bate, Canup, Coradini, D'Angelo, Hibbitts, Hibbitts, Ida, Laughlin, Lin, Lubow, Magni, Menou, Mosqueira, Mosqueira, Mousis, Mousis, Mousis, Nelson, O. Mousis, Papaloizou, Pollack, Rafikov, Saumon, Shakura, Spohn, Stevenson, Tanaka, Veras, W. Benz, Ward, Y. Alibert   +33 more
core   +2 more sources

Minimum Mass Solar Nebulae and Planetary Migration [PDF]

Astrophys.J.698:606-614,2009, 2009
The Minimum Mass Solar Nebula (MMSN) is a protoplanetary disk that contains the minimum amount of solids necessary to build the planets of the Solar System. Assuming that the giant planets formed in the compact configuration they have at the beginning of the "Nice model", Desch (2007) built a new MMSN.
arxiv   +1 more source

Mixing in the Solar Nebula: Implications for Isotopic Heterogeneity and Large-Scale Transport of Refractory Grains [PDF]

, 2008
The discovery of refractory grains amongst the particles collected from Comet 81P/Wild 2 by the Stardust spacecraft (Brownlee et al. 2006) provides the ground truth for large-scale transport of materials formed in high temperature regions close to the ...
Alan P. Boss, Ali, Amelin, Andreasen, Andrews, Bizzarro, Boss, Boss, Boss, Boss, Boss, Boss, Boss, Brownlee, Ciesla, Ciesla, Cieza, Clayton, Clayton, Desch, Gail, Halliday, Hsu, Inaba, Kitamura, Krot, Krot, Lyons, Matsumura, Merín, Mostefaoui, Nuth, Sakamoto, Shu, Simon, Tachibana, Thrane, Tscharnuter, van Boekel, Vanhala, Yokoyama, Yurimoto   +41 more
core   +1 more source

Differences in elemental abundances between CI chondrites and the solar photosphere

Meteoritics &Planetary Science, Volume 59, Issue 12, Page 3193-3214, December 2024.
Abstract CI chondrites have been a proxy for the solar system since the mid‐20th century. The photospheric and CI chondrite abundances (P and CI, respectively) show a strong correlation. CI as a proxy is also justified by the (i) smoothness of their abundances plotted as a function of odd mass number and (ii) agreement within the error of P as ...
A. J. G. Jurewicz, A. M. Amarsi, D. S. Burnett, N. Grevesse   +3 more
wiley   +1 more source