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Title: V2676 Oph: estimating physical parameters of a moderately fast nova
Authors: Raj, A
Pavana, M
Kamath, U. S
Anupama, G. C
Walter, F. M
Keywords: Line: identification;Novae, cataclysmic variables;Stars: individual: V2676 Oph;Techniques: spectroscopic
Issue Date: Mar-2018
Publisher: Copernicus Foundation for Polish Astronomy
Citation: Acta Astronomica, Vol. 68, No. 1, pp. 79-88
Abstract: Using our previously reported observations, we derive some physical parameters of the moderately fast nova V2676 Oph 2012 #1. The best-fit Cloudy model of the nebular spectrum obtained on 2015 May 8 shows a hot white dwarf source with TBB≈1.0×105 K having a luminosity of 1.0×1038 erg/s. Our abundance analysis shows that the ejecta are significantly enhanced relative to solar, He/H=2.14, O/H=2.37, S/H=6.62 and Ar/H=3.25. The ejecta mass is estimated to be 1.42×10-5 M⊙. The nova showed a pronounced dust formation phase after 90 d from discovery. The J-H and H-K colors were very large as compared to other molecule- and dust-forming novae in recent years. The dust temperature and mass at two epochs have been estimated from spectral energy distribution fits to infrared photometry.
Description: Restricted Access
ISSN: 0001-5237
???metadata.dc.rights???: © Copernicus Foundation for Polish Astronomy
Appears in Collections:IIAP Publications

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