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ATEL # 2447; A.J. Drake, S.G. Djorgovski, A.A. Mahabal, M.J. Graham, R. Williams (Caltech); J. Prieto (OCIW); M. Catelan (PUC); E. Christensen (Gemini Observatory); E.C. Beshore, S.M. Larson, (LPL/UA)
on 18 Feb 2010; 18:41 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: Andrew J. Drake (email@example.com)
Subjects: Optical, Request for Observations, Nova, Supernova, Transients
We report supernova candidates discovered by Catalina Real-time Transient Survey (CRTS) between 2010-02-09 and 2010-02-17 UT.
|ID||Disc. Date||RA||Dec||Disc. Mag|
All SN candidates have apparent host galaxies seen in images from one of the following surveys: PQ, SDSS, NOAO DWFS or CFHT LS.
More information including finding charts can be found at http://voeventnet.caltech.edu/feeds/ATEL/CRTS/
Supernova and highly variable sources are regularly discovered by CRTS and are posted at http://crts.caltech.edu/.
Further to Atel#1950, using Keck-I + LRIS observations taken on Dec 19th we confirm the detection of optical emission centered on wavelength 6768A at the location of the ~23rd magnitude host galaxy of type Ia supernova 2009aq (CSS090213:030920+160505). Under the assumption that this emission is H_alpha, the derived redshift of this galaxy is z=0.031. This result is in excellent agreement with the redshift derived from supernova spectrogram (z=0.031+/-0.006) and thus this object is very likely the host galaxy. Additional observations were taken at the location of the faded supernova (~2.5" south). These did not yield any emission. The presence of H_alpha emission is likely an indication of recent star formation in the intrinsically low luminosity (Mv~-13) dwarf galaxy.
Follow-up is requested.