Úgy néz ki, megtalálták a szupernóva lehetséges progenitorát:

http://www.astronomerstelegram.org/?read=3399

POSSIBLE PROGENITOR OF THE NEW TYPE II SN IN M51

ATel #3399; W. Li and A. V. Filippenko, University of California,
Berkeley
on 3 Jun 2011; 12:04 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Weidong Li (weidong@astron.berkeley.edu)

Subjects: Optical, Supernovae, Transient

W. Li and A. V. Filippenko, University of California, Berkeley, report
that they have isolated a possible progenitor for the young type-II
supernova in M51 (ATel 3398)in Hubble Space Telescope images of M51
(GO/DD program 10452) taken with the Advanced Camera for Surveys (ACS).
A geometrical transformation between a stacked KAIT (Lick Observatory)
image of the SN taken on Jun 3.26 UT and the ACS images has yielded the
identification of an object in the ACS images that is within the 0".09
uncertainty of the supernova position; this object was detected in the
F435W (B), F555W (V), F658N (H-alpha), and F814W (I) band images. The
position of the candidate progenitor is measured to be R.A. =
13h30m05s.119, Decl. = +47o10´11".55 (equinox 2000.0). Further analysis
of the astrometry and photometry of the candidate progenitor is in
progress. A finder chart with stamps of the SN site from the ACS images
in different filters can be found at
http://astro.berkeley.edu/~weidong/m51sn.prog.gif

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Fidusz (FIDRICH Robert)
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