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HST Observations of the Bright Type Ia SN 2011iv

ATel #3797; Ryan J. Foley (Harvard-Smithsonian Center for Astrophysics)
on 7 Dec 2011; 15:22 UT
Credential Certification: Ryan Foley (rfoley@cfa.harvard.edu)

Subjects: Optical, Ultra-Violet, Request for Observations, Supernovae, Transient

Following the discovery and rapid classification of SN 2011iv (CBET 2940) as a young, nearby (D ~ 18 Mpc), minimally reddened Type Ia supernova, we triggered STIS UV observations with the Hubble Space Telescope under the Cycle 19 program "Understanding the Progenitor Systems, Explosion Mechanisms, and Cosmological Utility of Type Ia Supernovae" (PI Foley). The first epoch of HST UV spectroscopy will occur on 11 December 2011 at about 03:00 UT. There will be a total of 7 epochs of HST spectroscopy over the span of a month. Swift/UVOT UV spectroscopic and photometric observations have also been triggered, and data have already been obtained. We encourage additional follow-up observations at all wavelengths.