A long trail behind the planetary nebula HFG1 (PK 136+05) and its pre-cataclysmic binary central star V664 Cas |
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| Authors: | P. Boumis J. Meaburn M. Lloyd S. Akras |
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| Affiliation: | Institute of Astronomy and Astrophysics, National Observatory of Athens, I. Metaxa &V. Pavlou, GR–152 36 P. Penteli, Athens, Greece;Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL;Astronomical Laboratory, Department of Physics, University of Patras, 26500 Rio-Patras, Greece |
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| Abstract: | A deep wide-field image in the light of the Hα and [N ii ] 6548 & 6584 Å emission lines, of the planetary nebula HFG1 which surrounds the pre-cataclysmic binary system V664 Cas, has revealed a tail of emission at least 20 arcmin long, at a position angle of 316°. Evidence is presented which suggests that this is an ≈105 yr old trail of shocked material, left behind V664 Cas as it ejects matter whilst ploughing through its local interstellar media at anywhere between 29 and 59 km s−1 depending on its distance from the Sun. |
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| Keywords: | stars: AGB and post-AGB binaries: general stars: individual: V664 Cas novae, cataclysmic variables planetary nebulae: individual: HFG1 |
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