Supernova Candidates and Classifications from CRTS
ATel #2490; A. A. Mahabal, A. J. Drake, S. G. Djorgovski, M. J. Graham, R. Williams (Caltech); Adam Myers (UIUC); J. Prieto (OCIW); M. Catelan (PUC); E. Christensen (Gemini Observatory); Vijay Mohan, Swara Ravindranath (IUCAA); E. C. Beshore, S. M. Larson, (LPL/UA)
on 19 Mar 2010; 08:30 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Andrew J. Drake (ajd@cacr.caltech.edu)
Subjects: Optical, Request for Observations, Supernovae, Transient
We report the discovery of supernova candidates by the Catalina Real-time Transient Survey
(CRTS) between 2010-03-04 and 2010-03-18 UT as well as spectroscopic observations taken with
Palomar 5m+DSBS on 2010 Mar 15 UT.
| ID | Disc. Date | RA | Dec | Disc. Mag |
|---|
| CSS100318:134734+333104 | 2010-03-18 | 13:47:34.38 | 33:31:03.6 | 19.5 |
| CSS100318:151440+282521 | 2010-03-18 | 15:14:39.61 | 28:25:21.4 | 18.3 |
| MLS100318:120858+034250 | 2010-03-18 | 12:08:57.71 | 03:42:49.8 | 20.9 |
| MLS100318:112205+092644 | 2010-03-18 | 11:22:04.65 | 09:26:44.5 | 18.1 |
| CSS100317:092742+443437 | 2010-03-17 | 09:27:42.21 | 44:34:36.5 | 19.0 |
| CSS100317:102731+401548 | 2010-03-17 | 10:27:31.50 | 40:15:48.4 | 19.2 |
| CSS100317:123527+270403 | 2010-03-17 | 12:35:27.19 | 27:04:02.8 | 17.5# |
| CSS100317:151949+023120 | 2010-03-17 | 15:19:49.45 | 02:31:19.6 | 18.7 |
| CSS100315:101242-015815 | 2010-03-15 | 10:12:42.35 | -01:58:15.0 | 19.2 |
| MLS100315:073816+195257 | 2010-03-15 | 07:38:15.94 | 19:52:57.0 | 21.0 |
| MLS100315:114953-002513 | 2010-03-15 | 11:49:53.42 | -00:25:13.4 | 19.1 |
| CSS100313:112547-084941 | 2010-03-13 | 11:25:46.71 | -08:49:41.4 | 18.5* |
| MLS100313:085517+164511 | 2010-03-13 | 08:55:16.92 | 16:45:10.8 | 21.6* |
| MLS100313:131349-062327 | 2010-03-13 | 13:13:48.76 | -06:23:27.0 | 20.6 |
| MLS100313:131245-064047 | 2010-03-13 | 13:12:44.72 | -06:40:47.5 | 21.0 |
| CSS100312:093302+154909 | 2010-03-12 | 09:33:01.75 | 15:49:08.8 | 17.7* |
| CSS100312:113757+105338 | 2010-03-12 | 11:37:56.58 | 10:53:38.0 | 19.3* |
| CSS100312:120855-033744 | 2010-03-12 | 12:08:54.97 | -03:37:43.8 | 19.8 |
| CSS100305:122321+295643 | 2010-03-05 | 12:23:21.41 | 29:56:42.8 | 18.5 |
| CSS100305:095941+174714 | 2010-03-05 | 09:59:41.21 | 17:47:14.4 | 19.7 |
| CSS100304:105931+144850 | 2010-03-04 | 10:59:31.03 | 14:48:50.0 | 19.2 |
|
# CSS100317:123527+270403 is associated with a star forming galaxy observed by SDSS at redshift z=0.067.
* The Palomar spectrum of CSS100312:093302+154909 reveals it to be a type IIb near maximum light in
excellent agreement with Cenko et al. CBET#2208.
A low S/N spectrum of MLS100313:085517+164511 suggests that it is type Ia SN at z~0.35, around maximum
light. This is consistent with the observed brightness.
The spectrum of CSS100313:112547-084941 shows a blue continuum and a strong narrow emission line
consistent with Halpha at z=0.17. The spectrum of a nearby galaxy matches this redshift.
The spectrum of CSS100312:113757+105338 best matches a type Ia SN at z=0.12.
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/.
Additional follow-up is requested.
