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The Chemical Distribution in a Subluminous Type Ia Supernova: HST Images of the SN 1885 Remnant
Robert A. Fesen, Peter A. Hoeflich, Andrew J. S. Hamilton +4
We present HST images of the remnant of SN 1885 seen in absorption against M31's bulge via resonance lines of Ca I, Ca II, Fe I, and Fe II. Viewed in CaII H & K line absorption, th…
Asymmetric Explosion of Type Ia Supernovae as Seen from Near Infrared Observations
K. Motohara, K. Maeda, C. L. Gerardy +8
We present near-infrared spectra of late phase (>200 d) Type Ia supernovae (SNe Ia) taken at the Subaru telescope. The [Fe II] line of SN 2003hv shows a clear flat-topped feature,…
Exploring Broadband GRB Behavior During gamma-ray Emission
S. A. Yost, H. F. Swan, E. S. Rykoff +44
The robotic ROTSE-III telescope network detected prompt optical emission contemporaneous with the gamma-ray emission of Swift events GRB051109A and GRB051111. Both datasets have co…
De-leptonization and Non-Axisymmetric Instabilities in Core Collapse Supernovae
J. Craig Wheeler, Shizuka Akiyama
The timescale of de-leptonization by neutrino loss and associated contraction of a proto-neutron star is short compared to the time to progagate a shock through the helium core of…
Spitzer measurements of atomic and molecular abundances in the Type IIP SN 2005af
Rubina Kotak, Peter Meikle, Monica Pozzo +12
We present results based on Spitzer Space Telescope mid-infrared (3.6-30 micron) observations of the nearby IIP supernova 2005af. We report the first ever detection of the SiO mole…
A Spitzer Space Telescope study of SN 2002hh: an infrared echo from a Type IIP supernova
W. P. S. Meikle, S. Mattila, C. L. Gerardy +10
We present late-time (590-994 d) mid-IR photometry of the normal, but highly-reddened Type IIP supernova SN 2002hh. Bright, cool, slowly-fading emission is detected from the direct…