NIR Magnitudes of SN 2014J Obtained Near Maximum Light
ATel #5840; Noel Richardson (Universite de Montreal), Etienne Artigau (Universite de Montreal), Denise Laflamme (Universite de Montreal), Bernard Malenfant (Observatoire du Mont Megantic)
on 31 Jan 2014; 18:43 UT
Credential Certification: Noel Richardson (richardson@astro.umontreal.ca)
Subjects: Infra-Red, Supernovae
Referred to by ATel #: 5851
SN 2014J (PSN J09554214+6940260) is the brightest Ia supernova in recent history and was discovered in M82 by Folley (CBET#3792). It was classified as a Ia in subsequent spectroscopic observations (ATEL#5786, ATEL#5791), and is expected to peak near 29-30 Jan 2014. While the supernova is bright and nearby, the reddening for this object is quite high (ATEL#5797, ATEL#5816, ATEL#5829, ATEL#5830), making multi-wavelength observations desirable in order to better constrain the bolometric luminosities.
Infrared Magnitudes have only been reported in ATEL#5793, where the magnitudes reported were J=9.94+/-0.08, H=9.83+/-0.06, and K=9.80+/-0.08 on 22.76 Jan 2014, approximately one week prior to the maximum light. We obtained broadband photometry in the J, H, and K bands with the CPAPIR (Artigau et al. 2004, SPIE, 5492, 1479) instrument on the 1.6 m telescope at the Observatoire du Mont Megantic. We found that the near-peak brightness of the supernova had the following magnitudes at the following times after estimating the host galaxy contribution, which we had in archival CPAPIR K-band imaging:
MJD = 2456686.85, J= 9.55 +/- 0.05
MJD = 2456686.91, H = 9.72 +/- 0.03
MJD = 2456686.78, K = 9.42 +/- 0.04
These data were obtained for the OPIOMM Project., and the supernova and archival data are publicly available upon request.
Information on the CPAPIR Instrument
