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CK Vul: a smorgasbord of hydrocarbons rules out a 1670 nova (and much else besides)

Van Loon

CK Vul: a smorgasbord of hydrocarbons rules out a 1670 nova (and much else besides) Thumbnail


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Abstract

We present observations of CK Vul obtained with the Spitzer Space Telescope. The infrared spectrum reveals a warm dust continuum with nebular, molecular hydrogen and HCN lines superimposed, together with the ‘Unidentified Infrared’ features. The nebular lines are consistent with emission by a low-density gas. We conclude that the Spitzer data, combined with other information, are incompatible with CK Vul being a classical nova remnant in ‘hibernation’ after the event of 1670, a ‘very late thermal pulse’, a ‘Luminous Red Variable’, such as V838 Mon, or a ‘diffusion-induced nova’. The true nature of CK Vul remains a mystery.

Acceptance Date Dec 5, 2015
Publication Date Apr 11, 2016
Publicly Available Date Mar 28, 2024
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Publisher Oxford University Press
Pages 2871 - 2876
DOI https://doi.org/10.1093/mnras/stw352
Keywords astronomy, astrophysics, circumstellar matter stars, CK Vul ISM, molecules, infrared, stars
Publisher URL http://dx.doi.org/10.1093/mnras/stw352

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