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Giant infrared bubble in Cepheus

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Abstract

A ring-shaped infrared emission region is recognizable on the IRAS Sky Flux images of a Cepheus region which happens to include the association Cepheus OB 2. The ring is easily visible both at 60 and 100 microns. The approximate galactic coordinates of its centre arel=102°.8 andb=+6°.7, with an outer diameter of 7 deg. IC 1396 and several otherHii regions, such as S 129, S 133, S 134, and S 140 are apparently parts of the ring. If it is assumed that these Hii regions are physically connected to the ring its distance must be about 900 pc and its diameter 120 pc. The existence of several arc-shaped Hα filaments along the ring, the proper motion of the nearby runaway star λ Cephei, and the possible presence of the [Fex] λ6375 interstellar line in the spectra of two stars of Cep OB 2 combine to suggest that the infrared ring might well be a result of a supernova explosion which occurred in this region about 2–3 million years ago.

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Authors and Affiliations

  1. Konkoly Observatory, Budapest, Hungary

    M. Kun, L. G. Balázs & I. Tóth

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  1. M. Kun
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  2. L. G. Balázs
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  3. I. Tóth
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Kun, M., Balázs, L.G. & Tóth, I. Giant infrared bubble in Cepheus. Astrophys Space Sci 134, 211–217 (1987). https://doi.org/10.1007/BF01094933

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  • DOI: https://doi.org/10.1007/BF01094933

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