Results 61 to 70 of about 22,425 (264)

Accumulation of Dust on a Surface and the Subsequent Formation of Compact Aggregate Piles

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Dust aggregation is a prominent topic in space physics, yet the accumulation of dust on surfaces in airless environments remains poorly understood. It is commonly assumed that, during the initial stages of dust deposition, particles spread uniformly to form a monolayer.
G. Griffin, J. Martinez, P. Adamson, L. Matthews, T. W. Hyde   +4 more
wiley   +1 more source

Discovery of Jet–Bubble–Disk Interaction: Jet Feedback on a Protoplanetary Disk Via an Expanding Bubble in WSB 52

The Astrophysical Journal
While stellar jets and outflows are fueled by accretion from disks, their direct influence on disks remain unexplored. Here, we revisit Atacama Large Millimeter/submillimeter Array observations of ^12 CO ( J  = 2–1) line emission for the young stellar ...
Masataka Aizawa, Ryuta Orihara, Munetake Momose   +2 more
doaj   +1 more source

On rapid migration and accretion within disks around supermassive black holes

, 2011
Galactic nuclei should contain a cluster of stars and compact objects in the vicinity of the central supermassive black hole due to stellar evolution, minor mergers and gravitational dynamical friction.
Alexander, Armitage, Artymowicz, B. McKernan, Baruteau, Chang, Collin, Cordes, Crummy, Gierliński, Goodman, H. B. Perets, Ho, K. E. S. Ford, Kauffmann, Kormendy, Krolik, L. M. Winter, Levin, Lodato, Lyra, Masset, McKernan, McKernan, McKernan, Merritt, Miralda Escudé, Miralda Escudé, Morris, Nayakshin, Nelson, Noble, Ostriker, Paardekooper, Pepliński, Pepliński, Perets, Pier, Rauch, Remillard, Schödel, Shakura, Shlosman, Sirko, Subr, Syer, T. Yaqoob, Toropina, Vilkoviskij, W. Lyra, Winter   +50 more
core   +1 more source

Global Models of Planet Formation and Evolution [PDF]

, 2014
Despite the increase in observational data on exoplanets, the processes that lead to the formation of planets are still not well understood. But thanks to the high number of known exoplanets, it is now possible to look at them as a population that puts ...
Alibert, Y., Dittkrist, K. -M., Jin, S., Mollière, P., Mordasini, C.   +4 more
core   +3 more sources

A statistical investigation into relationships between the IIE irons and the ordinary, F and “HH” chondrites

Meteoritics &Planetary Science, Volume 60, Issue 10, Page 2376-2400, October 2025.
Abstract It has been proposed that IIE iron meteorites formed through impact processes on a parent body that was composed of either the H chondrites or a much‐debated fourth ordinary chondrite group, the HH chondrites. To resolve this debate, we have compiled a large dataset for the ordinary chondrites, low‐fayalite ungrouped chondrites, and IIE irons,
Rachel S. Kirby, Penelope L. King, Andrew G. Tomkins   +2 more
wiley   +1 more source

Sites of Planet Formation in Binary Systems. I. Evidence for Disk−Orbit Alignment in the Close Binary FO Tau

The Astronomical Journal
Close binary systems present challenges to planet formation. As binary separations decrease, so do the occurrence rates of protoplanetary disks in young systems and planets in mature systems.
Benjamin M. Tofflemire, Lisa Prato, Adam L. Kraus, Dominique Segura-Cox, G. H. Schaefer, Rachel Akeson, Sean Andrews, Eric L. N. Jensen, Christopher M. Johns-Krull, J. J. Zanazzi, M. Simon   +10 more
doaj   +1 more source

Exploring the Complex Ionization Environment of the Turbulent DM Tau Disk

The Astrophysical Journal
Ionization drives important chemical and dynamical processes within protoplanetary disks, including the formation of organics and water in the cold midplane and the transportation of material via accretion and magnetohydrodynamic flows.
Deryl E. Long, L. Ilsedore Cleeves, Fred C. Adams, Sean Andrews, Edwin A. Bergin, Viviana V. Guzmán, Jane Huang, A. Meredith Hughes, Chunhua Qi, Kamber Schwarz, Jacob B. Simon, David Wilner   +11 more
doaj   +1 more source

PAHs in protoplanetary disks: emission and X-ray destruction [PDF]

, 2012
We study the PAH emission from protoplanetary disks. First, we discuss the dependence of the PAH band ratios on the hardness of the absorbed photons and the temperature of the stars.
Acke, Acke, Armitage, Asplund, Augereau, Baes, Bianchi, Bjorkman, Chase, Chiang, Compiegne, Doucet, Draine, Draine, Dullemond, Dwek, Ercolano, F. Heymann, Fleck, Galliano, Geers, Gordon, Guhathakurta, Habart, Hayashi, Heymann, Jayawardhana, Juvela, Keller, Krijt, Lagage, Lucy, Mathis, Mattioda, Mattioda, Min, Min, Miroshnichenko, Misselt, Peeters, Preibisch, R. Siebenmorgen, Robitaille, Robitaille, Salama, Schräpler, Schutte, Sellgren, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Stelzer, Tielens, Uchida, van den Ancker, Vinkovic, Youdin, Zubko   +60 more
core   +1 more source

Porous Dust Particles in Protoplanetary Disks: Application to the HL Tau Disk [PDF]

, 2023
Shangjia Zhang, Zhaohuan Zhu, Takahiro Ueda, Akimasa Kataoka, Anibal Sierra, Carlos Carrasco‐González, Enrique Macías   +6 more
openalex   +1 more source

Emission from Multiple Molecular Isotopologues in a High-inclination Protoplanetary Disk

The Astronomical Journal
We present a MIRI-MRS spectrum of the high-inclination protoplanetary disk around the solar-mass (K0) star MY Lup, obtained as part of the JWST Disk Infrared Spectral Chemistry Survey (JDISCS). The spectrum shows an unusually weak water emission spectrum
Colette Salyk, Klaus M. Pontoppidan, Andrea Banzatti, Edwin Bergin, Nicole Arulanantham, Joan Najita, Geoffrey A. Blake, John Carr, Ke Zhang, Chengyan Xie   +9 more
doaj   +1 more source