Near-infrared observations of supernova SN2014dt in M61
ATel #6772; Vishal Joshi (1), Mudit Srivastava (2), D. P.K. Banerjee (2), V. Venkataraman (2) and N. M. Ashok (2); (1) Inter-University Centre for Astronomy & Astrophysics, Pune, India; (2) Physical Research Laboratory, Ahmedabad, India
on 1 Dec 2014; 05:56 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Dipankar P.K. Banerjee (orion@prl.res.in)
Subjects: Infra-Red, Supernovae
We report photometry of the peculiar Type Ia supernova SN 2014dt in M61
(CBET 4011, ATel #6648) during the period 2014 November 4 to 11 in the
J and H bands with the Mount Abu 1.2 meter telescope and the near-infrared
NICMOS3 camera/spectrograph. Aperture photometry was done using the
standard star AS-23 (Hunt et al. 1998) for photometric calibration.
Contribution from the core of M61, separated by a considerable distance
from the SN, is not expected to affect the aperture photometry.
However, underlying background contribution from the galaxy has not
been
accounted for as perfectly as would likely be
possible using more refined techniques using psf fitting. With these
caveats, the derived magnitudes are listed below; the representative
errors in J and H filters are 0.2 and 0.3 magnitudes respectively.
| Date (Nov. 2014) |
J |
H |
| 5 |
13.7 |
- |
| 6 |
13.6 |
- |
| 7 |
13.8 |
- |
| 8 |
14.0 |
13.6 |
| 10 |
13.9 |
13.6 |
| 11 |
14.4 |
13.7 |
| 12 |
14.4 |
13.8 |
