Rise and fall of the dust shell of the classical nova V339 Delphini
Author
Evans, A.Banerjee, D. P. K.
Gehrz, R. D.
Joshi, V.
Ashok, N. M.
Ribeiro, V. A. R. M.
Darnley, M. J.
Woodward, C. E.
Sand, D.
Marion, G. H.
Diamond, T. R.
Eyres, S. P. S.
Wagner, R. M.
Helton, L. A.
Starrfield, S.
Shenoy, D. P.
Krautter, J.
Vacca, W. D.
Rushton, M. T.
Affiliation
Univ Arizona, LBT ObservIssue Date
2017-01-13Keywords
line: profilescircumstellar matter
stars: individual: V339 Del
novae, cataclysmic variables
infrared: stars
Metadata
Show full item recordPublisher
OXFORD UNIV PRESSCitation
Rise and fall of the dust shell of the classical nova V339 Delphini 2017:stw3334 Monthly Notices of the Royal Astronomical SocietyRights
© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical SocietyCollection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We present infrared spectroscopy of the classical nova V339 Del, obtained over an similar to 2-yr period. The infrared emission lines were initially symmetrical, with half width half-maximum velocities of 525 km s(-1). In later (t greater than or similar to 77 d, where t is the time from outburst) spectra, however, the lines displayed a distinct asymmetry, with a much stronger blue wing, possibly due to obscuration of the receding component by dust. Dust formation commenced at approximately day 34.75 at a condensation temperature of 1480 +/- 20 K, consistent with graphitic carbon. Thereafter, the dust temperature declined with time as T-d alpha t(-0.346), also consistent with graphitic carbon. The mass of dust initially rose, as a result of an increase in grain size and/or number, peaked at approximately day 100, and then declined precipitously. This decline was most likely caused by grain shattering due to electrostatic stress after the dust was exposed to X-radiation. The appendix summarizes Planck means for carbon and the determination of grain mass and radius for a carbon dust shell.ISSN
0035-87111365-2966
Version
Final published versionSponsors
National Aeronautics and Space Administration (NASA); United States Air Force; Radboud Excellence Initiative; NASA [HST-GO-13828.008-A, NNH14CK55B]; NSF; Department of Space, Government of Indiaae974a485f413a2113503eed53cd6c53
10.1093/mnras/stw3334