INT WFC multi-band photometric follow up of the superluminous supernova SN 2018fcg (= ZTF18abmasep) (= Gaia18cms) (= ATLAS18ucc)
ATel #12341; A. Hernandez-Garcia (ULL & IAC), E. M. Garcia-Zamora (ULL), M. Mallorquin (ULL), A. Alvarez-Hernandez (ULL), A. Alvarez-Saavedra (ULL), P. Carro-Portos (ULL), E. A. Diaz-Suarez (ULL), R. M. Doblas-Cabezas (ULL), M. Fernandez-Torreiro (ULL), J. E. Mendez-Delgado (ULL & IAC), D. Moral-Pombo (ULL), M. A. Nuñez-Cagigal (ULL & IAC), G. Panizo-Espinar (ULL), J. Sanchez-Sierras (ULL), D. SanJulian-Jacques (ULL), H. Villegas-Beberide (ULL), L. Monteagudo (ING), and I. Perez-Fournon (ULL & IAC)
on 30 Dec 2018; 14:14 UT
Credential Certification: Ismael Perez-Fournon (ipf@iac.es)
Subjects: Optical, Supernovae
We report multi-band photometry of the superluminous supernova SN 2018fcg (ZTF18abmasep) based on CCD images taken with the Wide Field Camera of the Isaac Newton Telescope (Observatorio del Roque de los Muchachos, La Palma) from 2018 Oct 12.910 UT to 12.920 UT.
This supernova was discovered on 2018/08/07.371 by the Zwicky Transient Facility (ZTF) collaboration and reported to TNS by C. Fremling et al. It was classified as a Type SLSN-I supernova at a redshift of z=0.101 by R. Lunnan et al. (ATel #11986) and A. Dugas et al. (ATel #11987). It was also detected by Gaia
(Gaia18cms)
and ATLAS (ATLAS18ucc), see TNS.
We report here the SN position, based on the INT images, calibrated using the Gaia DR2 catalog: RA (J2000) = 21:09:36.776, Dec (J2000) = +33:28:59.57.
The INT Wide Field Camera magnitudes of SN 2018fcg, calibrated using Pan-STARRS1 are:
g = 21.33 +/- 0.02 (2018 Oct 12.917), exposure time = 300 seconds
r = 20.38 +/- 0.02 (2018 Oct 12.912), exposure time = 300 seconds
i = 19.89 +/- 0.02 (2018 Oct 12.921), exposure time = 300 seconds
These magnitudes are not corrected for the contribution of the host galaxy.
The host galaxy is detected in the g, r, i and z bands of Pan-STARRS1 DR1 (PS1) (PS1 cutouts (30" x 30")
PS1 J2000 position of the host galaxy: RA (J2000) = 21:09:36.778, Dec (J2000) = +33:28:59.58. We don't find any offset between the SN and
host galaxy positions.
PS1 Kron magnitudes of the host galaxy:
gKmag = 21.5932 +/- 0.1946
rKmag = 21.5675 +/- 0.2349
iKmag = 21.4448 +/- 0.2188
zKmag = 21.0849 +/- 0.2923
Based on observations made with the Isaac Newton Telescope operated on the island of La Palma by the Isaac Newton Group of Telescopes in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias.
We thank David Bishop for his wonderful compilation of extragalactic novae and
supernovae.
Isaac Newton Telescope Wide Field Camera r-band image