Other
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924215s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #242.15
Other
Scientific paper
Type Ia supernovae (SNe Ia) have been extensively studied and used as standard candles. There are different sub types of SNe Ia, that include over-luminous (SN 1991T-like), under-luminous (SN 1991bg-like), and peculiar (e.g., SN2000cx, SN 2002cx, SN 2005hk). These sub-types reveal themselves through spectral and photometric differences from "normal" SNe Ia. Here we report on the collection and reduction of photometric data of supernova SN 2011dn during the course of a 41 day period, which started a few days before maximum. A pre-maximum spectrum provided a tentative SN 1991T-like classification (Koff et al. 2011) for this event, from which a broad, slowly declining light-curve with low Delta M_15(B) was anticipated. However, preliminary reduction (i.e., without the benefit of galaxy subtraction) and analysis of our light curves suggest that SN 2011dn did not confirm this prediction. In this poster we will discuss the peculiar nature of SN2011dn and compare it to other SNe Ia that have exhibited similar characteristics. We acknowledge support from the National Science Foundation (grants AST-1009571 and AST-0850564) under which this work was carried out.
Horst C.
Leonard Douglas C.
Salvo Christopher
Sumandal J.
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