Further Properties of the Candidate Progenitor of SN 2011dh in M51

Details Further Properties of the Candidate Progenitor of SN 2011dh in M51 Further Properties of the Candidate Progenitor of SN 2011dh in M51

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3431....1s&link_type=abstract

The Astronomer's Telegram, #3431

Astronomy and Astrophysics

Astronomy

2

Infra-Red, Optical, Ultra-Violet, Supernovae

Scientific paper

We report further analyses of archival Hubble Space Telescope images of the SN 2011dh progenitor candidate, following ATELs #3399 and 3401 (Li et al. 2011), as well as Spitzer mid-IR upper limits. Analyzing the archival HST F658N image using difference imaging and either the F555W or the F814W image as the template image, there is always a positive excess at the position of the candidate. This indicates the presence of Halpha emission from the candidate, consistent with the suggestion in ATEL #3428 (Silverman et al.

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