Discovery certificate for object 2015co
TNS Astronomical Transient Report No. 17527 [ 2018TNSTR.406....1P ]

Date Received (UTC): 2018-03-28 07:03:28
Sender: Dr. Bruno Rodriguez Del Pino
Source Group: None

Bruno Rodriguez Del Pino (Centro de Astrobiologia, CSIC-INTA), Santiago Arribas (Centro de Astrobiologia, CSIC-INTA), Lluis Galbany (PITT PACC, University of Pittsburgh), Manuel Emilio Moreno-Raya (Centro Astronomico Hispano-Aleman (CAHA, CSIC-MPG)), Santiago Gonzalez Gaitan (CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico), Montserrat Villar-Martin (Centro de Astrobiologia, CSIC-INTA), Javier Piqueras-Lopez (Centro de Astrobiologia, CSIC-INTA) report/s the discovery of a new astronomical transient.

IAU Designation: SN 2015co
Coordinates (J2000): RA = 17:14:36.120 (258.6505) DEC = +30:44:08.40 (30.735667)
Discovery date: 2015-09-28 12:00:00 (JD=2457294)

Potential host galaxy: SDSS J171436.05+304400.7
Host redshift: 0.03

Remarks: A very broad Halpha emission was detected during the analysis of a MaNGA data cube. After removing the light contribution from the galaxy, the spectrum clearly resembled a Type II supernova. Its coordinates were introduced in the Open Supernova Catalog (https://sne.space) and we found a match to the supernova candidate PS15aiu. Pan-STARRS first detection was on 2015 May 2 and MaNGA observations took place on 2015 September 28, almost five months later.

Photometry

Discovery (first detection):
Discovery date: 2015-09-28 12:00:00
Flux: 18.3 ABMag
Filter: Ha-
Instrument: Other
Telescope: Other

Remarks: Observed at the APO 2.5m telescope with the SDSS spectrograph under the MaNGA survey.

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2015co