[ Previous | Next | ADS ]

An SN candidate associated with a possible tidal stream

ATel #5097; A. J. Drake, S. G. Djorgovski, A. A. Mahabal, M. J. Graham, R. Williams (Caltech); J. Prieto (Princeton); M. Catelan (PUC Chile); E. Christensen, S. M. Larson (LPL/UA)
on 1 Jun 2013; 18:03 UT
Credential Certification: Andrew J. Drake (ajd@cacr.caltech.edu)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 5187

On 2013-05-31UT, during the course of regular survey operations of CRTS, we discovered transient MLS130531:100208+115705. The source is has magnitude V=18 and appears to be associated with galaxy 2MASXJ10020847+1157123. Based on the galaxy's redshift (z=0.0362, SDSS DR9) the source has an absolute luminosity of Mv~-18. Upon visual inspection of the discovery data it was found that the transient coincides with an apparent stellar stream associated with a tidally disrupted dwarf galaxy. Archival SDSS and CHFT MegaPrime images of the host galaxy also support the existence of tidal stream associated with this galaxy. The visual inspection also serendipitously revealed numerous filaments and structures associated with CGCG 064-031, a galaxy situated 5.8'W, 29.4'S of 2MASXJ10020847+1157123 with a matching redshift (z=0.0364, NED). This source was previously noted as a "very compact" galaxy (Zwicky et al. 1961), yet is clearly extended by on-going mergers.

Follow up observations are required to confirm the nature of the supernova candidate and the existence of the possible tidal stream.

Further information can be found at this link.