Journal Article

A long trail behind the planetary nebula HFG1 (PK 136+05) and its pre-cataclysmic binary central star V664 Cas

P. Boumis, J. Meaburn, M. Lloyd and S. Akras

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 396, issue 2, pages 1186-1188
Published in print June 2009 | ISSN: 0035-8711
Published online June 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.14784.x
A long trail behind the planetary nebula HFG1 (PK 136+05) and its pre-cataclysmic binary central star V664 Cas

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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.

Keywords: stars: AGB and post-AGB; binaries: general; stars: individual: V664 Cas; novae, cataclysmic variables; planetary nebulae: individual: HFG1

Journal Article.  1486 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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