Physics
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sptz.prop..550b&link_type=abstract
Spitzer Proposal ID #550
Physics
Scientific paper
A new intriguing transient, SN 2010dn in NGC 3184, was discovered ten days ago. The spectroscopic and photometric evolution make this transient similar to SN 2008S, the 2006 optical transient in M85 and the 2008 optical transient in NGC 300, members of a new class of transient events given the similar pre-explosion?and post-explosion properties. The nature of these transient is still debated?and our experience with SN 2008S proved that?Spitzer data are?invaluable to shed light on it providing a critical information in the understanding?the geometry of the circumstellar environment of these transients both for the dust enshrouded progenitor stars and after?their explosion. We would like to obtain a rapid follow-up of SN 2010dn with Spitzer to check if also this transient is producing an IR echo from substantial circumstellar material around the progenitor star. The modeling of the light echo will allow us to constrain the mass and?physical scale?of the circumstellar dust around this transient and as consequence to probe the mass loss history of the progenitor star. The proposed observations will be coordinated with an extensive optical follow up and?will be of interest to the broad scientific community. To obtain prompt observations after the discovery?is crucial.
Benetti Stefano
Botticella Maria Teresa
Kotak Rubina
Meikle Peter
Pastorello Andrea
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