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2.3-11.6 Micron Measurements of Nova Del 2013 Consistent with Presence of Dust

ATel #5604; A. C. Cass, R. L. Carlon, D. T. Corgan, D. A. Dykhoff, R. D. Gehrz, R. D. and D. P. Shenoy (Minnesota Institute for Astrophysics, Minneapolis, MN, USA)
on 27 Nov 2013; 00:32 UT
Credential Certification: Robert Gehrz (gehrz@astro.umn.edu)

Subjects: Infra-Red, Nova

Our 2.3-11.6 micron measurements of Nova Del 2013 on 24.04 November 2013 UT using an As:Si bolometer mounted on the 0.76-m infrared telescope of the University of Minnesota's O'Brien Observatory (Marine on St. Croix, Minnesota, USA) yielded the following magnitudes: K = +5.24 +/- 0.15, L = +3.25 +/- 0.38, M = +2.00 +/- 0.26, [10.3] = -0.17 +/- 0.38, and [11.6] = -0.19 +/- 0.21. An additional measurement on 19.08 November 2013 yielded [10.3] = -0.10 +/- 0.36. Co-addition of the data from the two nights gives [10.3] = -0.13 =/- 0.26. The measurements are consistent with the presence of a dust shell with a temperature of ~720K emitting about 10% of the outburst luminosity. Our observations were made possible by a generous gift from Edward Glickman and technical support by A. Knutson and J. Marchetti.