Results 61 to 70 of about 56,805 (216)

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

Textural coarsening as the cause for impact‐melt like plagioclase crystal size distributions and subtle layering in high‐Al basalt 14053

Meteoritics &Planetary Science, EarlyView.
Abstract High‐Al Apollo 14 basalt 14053 has been identified as an endogenous partial melt product from the lunar interior based on geochemical analyses, specifically low abundances of highly siderophile elements, but exhibits textural characteristics similar to those of impact melts. Prior studies of this sample have described mineralogical differences
Stu Webb, Clive R. Neal, Bridget Guiza, James M. D. Day   +3 more
wiley   +1 more source

Layering Structures in the Porous Material Beneath the Chang'e‐3 Landing Site

Earth and Space Science, 2020
The lunar penetrating radar (LPR) onboard the Chinese Chang'e‐3 (CE‐3) mission obtained high‐resolution profile data for the continuous ejecta deposits of the Ziwei crater.
Chunyu Ding, Chunlai Li, Zhiyong Xiao, Yan Su, Shuguo Xing, Yichen Wang, Jianqing Feng, Shun Dai, Yuan Xiao, Meijuan Yao   +9 more
doaj   +1 more source

Near-IR Spectral Observations of the Didymos System: Daily Evolution Before and After the DART Impact Indicates that Dimorphos Originated from Didymos

The Planetary Science Journal, 2023
Ejecta from Dimorphos following the DART mission impact significantly increased the brightness of the Didymos–Dimorphos system, allowing us to examine subsurface material.
David Polishook, Francesca E. DeMeo, Brian J. Burt, Cristina A. Thomas, Andrew S. Rivkin, Juan A. Sanchez, Vishnu Reddy   +6 more
doaj   +1 more source

Exchange of ejecta between Telesto and Calypso: Tadpoles, horseshoes, and passing orbits

, 2010
We have numerically integrated the orbits of ejecta from Telesto and Calypso, the two small Trojan companions of Saturn's major satellite Tethys. Ejecta were launched with speeds comparable to or exceeding their parent's escape velocity, consistent with ...
Alvarellos, Alvarellos, Alvarellos, Anthony R. Dobrovolskis, Arias, Bate, Danby, Dermott, Dermott, Dobrovolskis, Dobrovolskis, Dobrovolskis, Housen, Izidoro, Jack J. Lissauer, José Luis Alvarellos, Kempf, Kevin J. Zahnle, Lecacheux, Levison, Lissauer, Melosh, Melosh, Melosh, Melosh, Murray, Porco, Seidelmann, Shoemaker, Sinclair, Szebehely, Wisdom, Zahnle, Zahnle, Zahnle, Zahnle   +35 more
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

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

Ejecta cloud from the AIDA space project kinetic impact on the secondary of a binary asteroid: II. fates and evolutionary dependencies [PDF]

, 2017
This paper presents a quantitative study of the evolution of the ejecta cloud released from a hypervelocity impact on a binary asteroid. We performed numerical simulations of the post-impact dynamics of the ejecta cloud in the framework of the current mission scenario of AIDA mission project.
arxiv   +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

The Relation Between Ejecta Velocity, Intrinsic Color, and Host-Galaxy Mass for High-Redshift Type Ia Supernovae

, 2012
Recently, using a large low-redshift sample of Type Ia supernovae (SNe Ia), we discovered a relation between SN Ia ejecta velocity and intrinsic color that improves the distance precision of SNe Ia and reduces potential systematic biases related to dust ...
Amanullah, Blondin, Coil, Conley, Conley, Conley, Ellis, Foley, Foley, Foley, Foley, Foley, Frieman, Ganeshalingam, Hicken, Hicken, Holtzman, Hook, Howell, Howell, Howell, Höflich, Kasen, Kelly, Kelly, Kessler, Konishi, Lampeitl, Lentz, Leonard, Matheson, Matheson, Maund, Miknaitis, Nugent, Perlmutter, Riess, Riess, Riess, Ryan J. Foley, Sako, Sullivan, Wang, Wood-Vasey, Zheng   +44 more
core   +1 more source