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Recent Supernovae from CRTS

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 (ajd@cacr.caltech.edu)

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.

IDDisc. DateRADecDisc. Mag
CSS100217:111053+370948 2010-02-17 11:10:52.68 37:09:47.6 19.6
CSS100217:112713+341752 2010-02-17 11:27:13.41 34:17:51.6 19.3
CSS100217:124243+325205 2010-02-17 12:42:43.27 32:52:04.8 19.8
CSS100216:125700-173735 2010-02-16 12:57:59.62 -17:37:35.5 17.6
CSS100215:121531+260608 2010-02-15 12:15:30.62 26:06:07.6 19.5
CSS100215:140804+181149 2010-02-15 14:08:04.20 18:11:49.0 20.2
CSS100215:104515+142033 2010-02-15 10:45:14.89 14:20:33.3 20.0
MLS100215:150114-123607 2010-02-15 15:01:13.77 -12:36:06.5 20.7
MLS100215:090526+125350 2010-02-15 09:05:25.82 12:53:49.9 20.1
CSS100214:030635+230620 2010-02-14 03:06:35.39 23:06:20.3 19.0
CSS100214:115104+075849 2010-02-14 11:51:03.66 07:58:48.6 18.7
MLS100213:112923+035256 2010-02-13 11:29:23.28 03:52:56.3 20.8
CSS100213:021444+161055 2010-02-13 02:14:44.12 16:10:55.4 18.9
CSS100209:035248+212505 2010-02-09 03:52:48.06 21:25:05.4 18.7

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.


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R. E. Rutledge , Editor
ATEL Mirror v1.0 Updates