Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733706a&link_type=abstract
American Astronomical Society, AAS Meeting #217, #337.06; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We present 3D simulations of off-center collisions between two white dwarfs to explore the possibility of such events being part of the overall Type Ia Supernovae (SNIa) population. In particular, we investigate collisions of carbon-oxygen white dwarfs of masses spanning the 0.6 - 0.9 solar masses over a range of non-zero impact parameters using the Eulerian adaptive-grid code FLASH. Preliminary results indicate 0.0 - 0.5 solar masses of 56Ni and 0.1 - 0.3 solar masses of unburned carbon and oxygen, making such collisions a candidate for producing sub-luminous supernovae, such as SN 1991bg, SN 1992K, and SN 2005bl. We also compare our results with similar simulations carried out using a Lagrangian particle SPH code, and comment on the conservation of angular momentum in a grid-based code.
Athanassiadou Themis
Hawley William
Timmes Francis X.
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