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Broad and narrow band imaging and spectroscopic follow up of SN2014J in M82

ATel #5827; Manuel E. Moreno-Raya (CIEMAT), Lluis Galbany (DAS/UChile), Angel R. Lopez-Sanchez (AAO/MQ), Inma Dominguez (UGR), Jose M. Vilchez (CSIC/IAA), Aurelio Carnero (ON), Mercedes Molla (CIEMAT)
on 28 Jan 2014; 18:30 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Lluis Galbany (lluisgalbany@gmail.com)

Subjects: Optical, Supernovae

Referred to by ATel #: 5843, 5876

The supernova SN2014J in the starburst galaxy M82 was observed using the 4.2m WHT in La Palma. Low, intermediate and high resolution spectroscopy with ISIS and ACAM and broadband (u, g, r, i, z) and Halpha imaging were obtained everynight from 23rd to 26th January. Low and intermediate resolution spectra were obtained covering the whole optical range (3500 A to 9400 A approx.), plus High resolution spectra (0.23 A/pix dispersion) centered at 3950 A in the blue and at 5890 A in the red. We confirm the presence of Ca II H&K, Na I D lines and Si II (6355 A). From Si II we derived an expansion velocity (corrected from M82 redshift) of approximately 13400 km/s in the spectra taken the 25th January. In addition, lines of Fe II, Fe III, Mg II, O I and C II were identified in the spectra. Further spectrophotometric analysis is under way.