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 language | English (US) |
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Article number | stw122 |
Pages (from-to) | 2871-2876 |
Number of pages | 6 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 457 |
Issue number | 3 |
DOIs | |
State | Published - Apr 11 2016 |
Bibliographical note
Publisher Copyright:© 2016 The Authors.
Keywords
- CK Vul - ISM
- Circumstellar matter - stars
- Individual
- Molecules - infrared
- stars