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Crater clusters on Mars:Shedding light on martian ejecta launch conditions
Cratering Mars Meteorites Impact processes
2015/12/25
We have identified two classes of crater clusters on Mars. One class is “small clusters” (crater diameter D ～ tens m, spread over few hundred m), fitting our earlier calculations for the breakup of we...
Unprecedented nova images illuminate astronomers' models for its ejecta
astronomy image fireball stage
2014/10/30
The first images of a nova during its early fireball stage--when it ejects material, and gases expand and cool--show that this activity is more complicated than predicted.
The first molecules detected at infrared wavelengths in the ejecta of a Type II supernova, namely SN1987A, consisted of CO and SiO. Since then, confirmation of the formation of these two species in se...
The Morphology of the Expanding Ejecta of V2491 Cygni (2008 N.2)
line profiles – stars novae – stars individual V2491 Cyg
2010/11/12
Determining the evolution of the ejecta morphology of novae provides valuable information
on the shaping mechanisms in operation at early stages of the nova outburst. Understanding
such mechanisms h...
Using the X-ray Morphologies of Young Supernova Remnants to Constrain Explosion Type, Ejecta Distribution, and Chemical Mixing
methods data analysis supernova remnants techniques image processing X-rays ISM
2010/11/10
Supernova remnants (SNRs) are a complex class of sources, and their heterogeneous nature has
hindered the characterization of their general observational properties. To overcome this challenge,in thi...
The Impact of Type Ia Supernova Ejecta on Binary Companions
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/29
We present adaptive mesh refinement (AMR) hydrodynamical simulations of the interaction between Type Ia supernovae and their companion stars within the context of the single-degenerate model.
Impact-induced and diagenetic changes in minerals in the sandy ejecta of the Kärdla crater,NW Estonia
impact craters ejecta shock metamorphism C-rich particles stable carbon isotopes
2009/10/22
The sand-rich ejecta containing a considerable amount of mineral grains with impact-induced features was studied in five boreholes drilled around the Kärdla impact meteorite structure. Quartz gra...
Stellar ejecta and their interaction with the the interstellar medium
Stellar ejecta interaction interstellar medium
2009/6/5
Stellar ejecta and their interaction with the the interstellar medium