http://arxiv.org/abs/1601.00316
A third parameter, in addition to luminosity and rate of brightness decline, that is derived from the spectra of transients is suggested as a means of more accurately classifying objects in outburst. Principal component analysis of the spectra of transients is suggested as the best way to determine the third parameter. A model is suggested for novae ejecta that is based on the ballistic ejection of an ensemble of clouds having a wide range of sizes. Short term brightness fluctuations of novae, the formation of dust, and the production of X-ray emission follow naturally from such a picture of the evolving clouds.
R. Williams
Tue, 5 Jan 16
65/104
Comments: To appear in Proceedings of the Pacific Rim Conference on Late Stages of Stellar Evolution, 2016, eds. S. Kwok & K.C. Leung, IoP Press. 4 pages, 4 figures