Results 91 to 100 of about 70,331 (294)

Selective sampling of asteroids, the Moon, and Mars: Factors affecting the numerical abundances of members of meteorite groups

Meteoritics &Planetary Science, EarlyView.
Abstract Meteorite collection inventories show that many related meteorite groups have very different numerical abundances (e.g., lunar versus Martian meteorites; Eagle Station pallasites versus main‐group pallasites; eucrites versus diogenites; ungrouped Antarctic irons versus ungrouped non‐Antarctic irons; carbonaceous chondrite‐related (CC) iron ...
Alan E. Rubin
wiley   +1 more source

Remnants and ejecta of thermonuclear electron-capture supernovae [PDF]

Astronomy & Astrophysics, 2018
The explosion mechanism of electron-capture supernovae (ECSNe) remains equivocal: it is not completely clear whether these events are implosions in which neutron stars are formed, or incomplete thermonuclear explosions that leave behind bound ONeFe white
S. Jones, Fritz Roepke, Chris L. Fryer, A. Ruiter, I. Seitenzahl, L. Nittler, S. Ohlmann, R. Reifarth, M. Pignatari, K. Belczynski   +9 more
semanticscholar   +1 more source

Surrogate light curve models for kilonovae with comprehensive wind ejecta outflows and parameter estimation for AT2017gfo

Physical Review Research, 2023
The electromagnetic emission resulting from neutron star mergers have been shown to encode properties of the ejected material in their light curves. The ejecta properties inferred from the kilonova emission has been in tension with those calculated based
Atul Kedia, Marko Ristic, Richard O'Shaughnessy, Anjali B. Yelikar, Ryan T. Wollaeger, Oleg Korobkin, Eve A. Chase, Christopher L. Fryer, Christopher J. Fontes   +8 more
doaj   +1 more source

Low‐temperature dissociation of zircon in highly alkaline conditions: A cautionary note for studies on natural glasses of debated origin

Meteoritics &Planetary Science, EarlyView.
Abstract Dissociated zircon is largely used as a robust indicator of glasses generated by impact cratering and airbursts. The reaction of zircon dissociation, i.e. ‘ZrSiO4 → ZrO2 + SiO2’, requires high temperatures (>1670°C) only reached by extreme geological processes. Using high‐temperature experiments, this study shows that zircon can dissociate and
A. Musolino, B. Devouard, P. Rochette, P. Roperch, P. M. Zanetta, A.‐M. Seydoux‐Guillaume, A. Licht, D. Ferry, A. Campos   +8 more
wiley   +1 more source

Zooming in on VY CMa ejecta [PDF]

, 2019
The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement n. 610256 (NANOCOSMOS). We would also like to thank the Spanish MINECO for funding support from grants CSD2009-00038, AYA2012-32032, AYA2016-75066-C2-1-P & AYA2016 ...
Quintana-Lacaci, G., Cernicharo, José, Agúndez, Marcelino, Fonfría, José Pablo, Velilla Prieto, L., Castro-Carrizo, A., Decin, L.   +6 more
openaire   +2 more sources

The Reionization of Unshocked Ejecta in SN1006 [PDF]

International Astronomical Union Colloquium, 1988
AbstractThe fortuitous positioning of the Schweizer and Middleditch OB subdwarf behind SN1006 has permitted the detection and subsequent confirmation by IUE of broad (±5000 km/s) Fe II absorption features which probably arise from unshocked iron ejecta in the center of SN1006.
R. A. Fesen, Andrew J. S. Hamilton
openaire   +3 more sources

A Drone‐Based Thermophysical Investigation of Barringer Meteorite Crater Ejecta

Earth and Space Science
Impact cratering processes are ubiquitous throughout our solar system, and the distribution and modification of impact ejecta are sensitive to variable environmental and geologic surface conditions.
Cole A. Nypaver, Bradley J. Thomson, Jeffrey E. Moersch, David A. Kring   +3 more
doaj   +1 more source

Optical Characterization of the DART Impact Plume: Importance of Realistic Ejecta Scattering Properties

The Planetary Science Journal, 2023
The Double Asteroid Redirection Test (DART) mission will impact the moon Dimorphos of the (65803) Didymos binary and demonstrate the kinetic impactor technique for planetary defense.
Ramin Lolachi, David A. Glenar, Timothy J. Stubbs, Ludmilla Kolokolova   +3 more
doaj   +1 more source

Molecules and dust in Cas A: I - Synthesis in the supernova phase and processing by the reverse shock in the clumpy remnant

, 2014
Aims: We study the chemistry of the Type IIb supernova ejecta that led to the Cas A supernova remnant to assess the chemical type and quantity of dust that forms and evolves in the remnant phase.
Biscaro, Chiara, Cherchneff, Isabelle
core   +1 more source

Ejecta Blankets at Small Craters on the Moon

The Planetary Science Journal
Impact-derived ejecta covers most of the lunar surface, originating from recent impacts through to the beginning of the geologic record. Despite how common ejecta is, accurate measurements of ejecta thickness are difficult to obtain, and existing ...
Trevor Austin, Mark Robinson, Prasun Mahanti   +2 more
doaj   +1 more source