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

A. Evans, R. D. Gehrz, C. E. Woodward, P. J. Sarre, J. T. van Loon, L. A. Helton, S. Starrfield, S. P.S. Eyres

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

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 su- perimposed, 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.

Original languageEnglish (US)
Article numberstw122
Pages (from-to)2871-2876
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume457
Issue number3
DOIs
StatePublished - Apr 11 2016

Bibliographical note

Publisher Copyright:
© 2016 The Authors.

Keywords

  • CK Vul - ISM
  • Circumstellar matter - stars
  • Individual
  • Molecules - infrared
  • stars

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