Results 141 to 150 of about 425,590 (288)

The Meteoritical Society: Business from 2023 to 2024

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 680-696, March 2025.
Nancy L. Chabot, Jutta Zipfel, Tasha L. Dunn   +2 more
wiley   +1 more source

Toward an efficient second‐order method for computing the surface gravitational potential on spherical‐polar meshes

Astronomische Nachrichten, Volume 345, Issue 8, October 2024.
Abstract Astrophysical accretion discs that carry a significant mass compared with their central object are subject to the effect of self‐gravity. In the context of circumstellar discs, this can, for instance, cause fragmentation of the disc gas, and—under suitable conditions—lead to the direct formation of gas‐giant planets.
Oliver Gressel, Udo Ziegler
wiley   +1 more source

Breathing Life Into Dead-Zones

EPJ Web of Conferences, 2013
The terrestrial planet formation regions of protoplanetary disks are generally sufficiently cold to be con- sidered non-magnetized and, consequently, dynamically inactive.
Gressel Oliver, Nelson Richard P., Umurhan Orkan M.   +2 more
doaj   +1 more source

Resonant Relaxation in Protoplanetary Disks [PDF]

The Astronomical Journal, 1998
19 pages, 1 figure, LaTeX, submitted to ...
openaire   +3 more sources

First direct detection of large polycyclic aromatic hydrocarbons on asteroid (162173) Ryugu samples: An interstellar heritage

Natural Sciences, Volume 4, Issue 4, October 2024.
Large free aromatic species, with up to 61 carbon atoms, were detected in grains of the Ryugu carbonaceous asteroid using ultra‐sensitive two‐step laser mass spectrometry. This discovery confirms the presence of large polycyclic aromatic hydrocarbons in the interstellar medium and provides new information on the formation and evolution of organic ...
Hassan Sabbah, Ghylaine Quitté, Karine Demyk, Christine Joblin   +3 more
wiley   +1 more source

exoALMA. I. Science Goals, Project Design, and Data Products

The Astrophysical Journal Letters
Planet formation is a hugely dynamic process requiring the transport, concentration, and assimilation of gas and dust to form the first planetesimals and cores.
Richard Teague, Myriam Benisty, Stefano Facchini, Misato Fukagawa, Christophe Pinte, Sean M. Andrews, Jaehan Bae, Marcelo Barraza-Alfaro, Gianni Cataldi, Nicolás Cuello, Pietro Curone, Ian Czekala, Daniele Fasano, Mario Flock, Maria Galloway-Sprietsma, Himanshi Garg, Cassandra Hall, Iain Hammond, Thomas Hilder, Jane Huang, John D. Ilee, Andrés F. Izquierdo, Kazuhiro Kanagawa, Geoffroy Lesur, Giuseppe Lodato, Cristiano Longarini, Ryan A. Loomis, Frédéric Masset, Francois Menard, Ryuta Orihara, Daniel J. Price, Giovanni Rosotti, Jochen Stadler, Leonardo Testi, Hsi-Wei Yen, Gaylor Wafflard-Fernandez, David J. Wilner, Andrew J. Winter, Lisa Wölfer, Tomohiro C. Yoshida, Brianna Zawadzki   +40 more
doaj   +1 more source

Physical properties of dusty protoplanetary disks in Lupus: evidence for viscous evolution? [PDF]

, 2017
The formation of planets strongly depends on the total amount as well as on the spatial distribution of solids in protoplanetary disks. Thanks to the improvements in resolution and sensitivity provided by ALMA, measurements of the surface density of mm ...
M. Tazzari, M. Tazzari, L. Testi, L. Testi, A. Natta, A. Natta, M. Ansdell, J. Carpenter, G. Guidi, G. Guidi, M. Hogerheijde, C. Manara, A. Miotello, N. Marel, E. Dishoeck, Jonathan P. Williams   +15 more
semanticscholar   +1 more source

Carbon In Protoplanetary Disks

, 2018
The carbon and oxygen content of the solids in protoplanetary disks plays an important role in defining the composition of giant planet atmospheres. I will discuss what we know about the distribution of carbonaceous material in the solar system and discuss potential processes influencing its radial distribution. I will also present modeling results for
openaire   +4 more sources

Micro‐ and nanoscale studies of insoluble organic matter and C‐rich presolar grains in Murchison and Sutter's Mill in preparation for Bennu sample analysis

Meteoritics &Planetary Science, Volume 59, Issue 10, Page 2831-2850, October 2024.
Abstract Samples of B‐type asteroid (101955) Bennu returned by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS‐REx) spacecraft will provide unique insight into the nature of carbonaceous asteroidal matter without the atmospheric entry heating or terrestrial weathering effects associated with ...
A. N. Nguyen, S. J. Clemett, K. Thomas‐Keprta, C. M. O'D. Alexander, D. P. Glavin, J. P. Dworkin, H. C. Connolly Jr, D. S. Lauretta   +7 more
wiley   +1 more source

Resolving Protoplanetary Disks at Millimeter Wavelengths by CARMA [PDF]

, 2015
We present continuum observations at 1.3 and 2.7 mm using the Combined Array for Research in Millimeter-wave Astronomy (CARMA) toward six protoplanetary disks in the Taurus molecular cloud: CI Tau, DL Tau, DO Tau, FT Tau, Haro 6-13, and HL Tau. We constrain physical properties of the disks with Bayesian inference using two disk models; flared power-law
arxiv   +1 more source