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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| Institution: | 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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