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HST Observations of the Bright Type Ia SN 2013dy

ATel #5216; Ryan J. Foley (Harvard-Smithsonian Center for Astrophysics)
on 19 Jul 2013; 13:16 UT
Distributed as an Instant Email Notice Supernovae
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 2013dy (CBET 3588) as a very young, nearby (D ~ 13.5 Mpc) Type Ia supernova, we triggered STIS UV observations with the Hubble Space Telescope under the Cycle 20 program "Understanding the Progenitor Systems, Explosion Mechanisms, and Cosmological Utility of Type Ia Supernovae" (GO-13286; PI Foley). The first epoch of HST UV spectroscopy is scheduled to occur on 21 July 2013 at about 11:00 UT. There will be a total of 10 epochs of HST spectroscopy over the span of a month. We encourage additional follow-up observations at all wavelengths.