Recent Optical Transients from CRTS
ATel #2210; A. J. Drake, S. G. Djorgovski, A. Mahabal, R. Williams, M. J. Graham (Caltech); M. Catelan (PUC); E. C. Beshore, S. M. Larson (LPL/UA); E. Christensen (Gemini Observatory)
on 23 Sep 2009; 20:29 UT
Credential Certification: Andrew J. Drake (ajd@cacr.caltech.edu)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Supernovae, Transient
We report the following transient sources recently discovered by the Catalina Real-Time Transient Survey (CRTS).
| ID | Disc. Date | RA | Dec | Disc. Mag | Type |
|---|
| CSS090923:155452+320506 | 2009-09-23 | 15:54:52.48 | 32:05:06.0 | 17.9 | SN |
| CSS090922:174034+184249 | 2009-09-22 | 17:40:34.32 | 18:42:49.0 | 15.7 | SN |
| CSS090919:002956-043451 | 2009-09-19 | 00:29:56.04 | -04:34:50.7 | 18.4 | SN |
| CSS090917:010244-192745 | 2009-09-17 | 01:02:43.63 | -19:27:45.4 | 18.1 | SN |
| CSS090917:172342+302950 | 2009-09-17 | 17:23:41.93 | 30:29:50.0 | 17.3 | SN |
| CSS090916:011748+011303 | 2009-09-16 | 01:17:48.27 | 01:13:03.0 | 19.4 | SN |
| CSS090830:230241-095954 | 2009-08-30 | 23:02:41.05 | -09:59:54.0 | 18.5 | SN |
| CSS090818:230830+254141 | 2009-08-18 | 23:08:30.35 | 25:41:41.0 | 18.6 | SN |
| CSS090818:013119+204008 | 2009-08-18 | 01:31:18.53 | 20:40:08.0 | 19.8 | SN? |
| | | | |
|
| CSS090922:052746-135256 | 2009-09-22 | 05:27:46.41 | -13:52:56.0 | 18.0 | CV |
| CSS090922:172901+160108 | 2009-09-22 | 17:29:00.94 | 16:01:08.0 | 17 | CV? |
| CSS090920:022632+210654 | 2009-09-20 | 02:26:32.33 | 21:06:54.0 | 17.9 | CV |
| CSS090920:023303+184822 | 2009-09-20 | 02:33:02.64 | 18:48:22.0 | 18.9 | CV |
| CSS090919:035534+292150 | 2009-09-19 | 03:55:33.92 | 29:21:50.0 | 16.0 | CV |
| CSS090918:001538+263657 | 2009-09-18 | 00:15:38.26 | 26:36:57.0 | 13.3 | CV |
| CSS090917:221344+173252 | 2009-09-17 | 22:13:44.04 | 17:32:52.0 | 17.2 | CV |
| CSS090917:022047-144823 | 2009-09-17 | 02:20:47.27 | -14:48:23.4 | 15.5 | CV |
| CSS090911:223136+180747 | 2009-09-11 | 22:31:35.99 | 18:07:47.0 | 18.0 | CV |
| CSS090911:221232+160140 | 2009-09-11 | 22:12:31.99 | 16:01:40.0 | 18.0 | CV |
| CSS090910:223418-035530 | 2009-09-10 | 22:34:18.48 | -03:55:30.1 | 15.3 | CV |
| CSS090829:205408-194027 | 2009-08-29 | 20:54:08.16 | -19:40:26.5 | 16.4 | CV |
| CSS090828:211551-000716 | 2009-08-28 | 21:15:50.87 | -00:07:15.8 | 17.8 | CV |
| CSS090820:173308+300635 | 2009-08-20 | 17:33:07.89 | 30:06:35.0 | 18.0 | CV |
| CSS090819:230938+370715 | 2009-08-19 | 23:09:38.04 | 37:07:15.0 | 18.1 | CV |
| CSS090818:170702+165339 | 2009-08-18 | 17:07:02.46 | 16:53:39.0 | 18.2 | CV |
Spectroscopy was obtained for three of the objects with SMARTS 1.5m telescope. CSS090910:223418-035530 exhibited a blue continuum with broad Balmer absorption lines (apart from H_alpha). CSS090917:010244-192745 was found to be an SN-Ia. CSS090917:221344+173252 showed strong Balmer emission lines typical of a CV.
More information about these transients can be found at http://voeventnet.caltech.edu/feeds/ATEL/CRTS/
Follow-up is requested.
Numerous other transients and highly variable objects are routinely discovered and posted at http://nesssi.cacr.caltech.edu/catalina/Allns.html
Further details of the CRTS project are available at http://crts.caltech.edu.
