Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph

Novae are generally considered to be hot astronomical objects and show effective temperatures up to 10,000 K or higher at their visual maximum. But, it is theoretically predicted that the outer envelope of the nova outflow can become cool enough to form molecules that would be dissociated at high te...

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Main Authors:	M. Nagashima, A. Arai, T. Kajikawa, H. Kawakita, E. Kitao, T. Arasaki, G. Taguchi, Y. Ikeda
Format:	Article
Language:	English
Published:	CTU Central Library 2015-02-01
Series:	Acta Polytechnica CTU Proceedings
Online Access:	https://ojs.cvut.cz/ojs/index.php/APP/article/view/2895

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spelling	doaj-5845c33c1b204003929454d2fcb93bed2020-11-25T00:00:23ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822015-02-012121221610.14311/APP.2015.02.02122657Detection of Diatomic Molecules in the Dust Forming Nova V2676 OphM. Nagashima0A. Arai1T. Kajikawa2H. Kawakita3E. Kitao4T. Arasaki5G. Taguchi6Y. IkedaKyoto Sangyo University, Koyama Astronomical ObservatoryKyoto Sangyo University, Koyama Astronomical Observatory University of Hyogo, Nishi-Harima Astronomical ObservatoryKyoto Sangyo University, Koyama Astronomical ObservatoryKyoto Sangyo University, Koyama Astronomical ObservatoryKyoto Sangyo University, Koyama Astronomical ObservatoryKyoto Sangyo University, Koyama Astronomical ObservatoryKyoto Sangyo University, Koyama Astronomical ObservatoryNovae are generally considered to be hot astronomical objects and show effective temperatures up to 10,000 K or higher at their visual maximum. But, it is theoretically predicted that the outer envelope of the nova outflow can become cool enough to form molecules that would be dissociated at high temperatures. We detected strong absorption bands of C<sub>2</sub> and CN radicals in the optical spectrum of Nova V2676 Oph, a very slow nova with dust formation. This is the first report of the detection of C<sub>2</sub> and the second one of CN in novae during outburst. Although such simple molecules are predicted to form in the envelope of the outflow based on previous studies, there are few reports of their detection. In the case of V2676 Oph, the presence of the molecular envelope is considered to be very transient, lasting several days only.https://ojs.cvut.cz/ojs/index.php/APP/article/view/2895
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	M. Nagashima A. Arai T. Kajikawa H. Kawakita E. Kitao T. Arasaki G. Taguchi Y. Ikeda
spellingShingle	M. Nagashima A. Arai T. Kajikawa H. Kawakita E. Kitao T. Arasaki G. Taguchi Y. Ikeda Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph Acta Polytechnica CTU Proceedings
author_facet	M. Nagashima A. Arai T. Kajikawa H. Kawakita E. Kitao T. Arasaki G. Taguchi Y. Ikeda
author_sort	M. Nagashima
title	Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
title_short	Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
title_full	Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
title_fullStr	Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
title_full_unstemmed	Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
title_sort	detection of diatomic molecules in the dust forming nova v2676 oph
publisher	CTU Central Library
series	Acta Polytechnica CTU Proceedings
issn	2336-5382
publishDate	2015-02-01
description	Novae are generally considered to be hot astronomical objects and show effective temperatures up to 10,000 K or higher at their visual maximum. But, it is theoretically predicted that the outer envelope of the nova outflow can become cool enough to form molecules that would be dissociated at high temperatures. We detected strong absorption bands of C<sub>2</sub> and CN radicals in the optical spectrum of Nova V2676 Oph, a very slow nova with dust formation. This is the first report of the detection of C<sub>2</sub> and the second one of CN in novae during outburst. Although such simple molecules are predicted to form in the envelope of the outflow based on previous studies, there are few reports of their detection. In the case of V2676 Oph, the presence of the molecular envelope is considered to be very transient, lasting several days only.
url	https://ojs.cvut.cz/ojs/index.php/APP/article/view/2895
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Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph

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