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Title:
Infrared Observations of Dust Formation and Coronal Emission in Nova Aquilae 1995
Authors:
Mason, C. G.; Gehrz, R. D.; Woodward, Charles E.; Smilowitz, J. B.; Greenhouse, Matthew A.; Hayward, T. L.; Houck, J. R.
Publication:
Astrophysical Journal v.470, p.577 (ApJ Homepage)
Publication Date:
10/1996
Origin:
APJ
ApJ Keywords:
ISM: DUST, EXTINCTION, INFRARED: STARS, STARS: NOVAE, CATACLYSMIC VARIABLES, STARS: INDIVIDUAL CONSTELLATION NAME: NOVA AQUILAE 1995
DOI:
10.1086/177889
Bibliographic Code:
1996ApJ...470..577M

Abstract

We report 1.25-18.5 μm infrared spectrophotometric measurements of Nova Aquilae 1995. Photometric measurements were obtained over a four month period following the formation of an optically thin dust shell. Hydrogen and helium emission lines were evident throughout this period, along with strong near-infrared coronal line emission that appeared approximately 120 days after outburst. Both the photometric and the spectroscopic data suggest that the ejecta were clumpy, and that they contained both a dust component and a hot gas component. The outflow velocity of the ionized ejecta was observed to be ˜1365-1600 km s-1 (FWHM), and no appreciable deceleration of the ejecta was observed over the duration of these observations. Based on a Mv-t2 light decline relationship, we calculate a distance of ˜3.6-4.8 kpc.

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