The peculiar planetary nebula Abell 35

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Binary Stars, Emission Spectra, Planetary Nebulae, Stellar Spectrophotometry, Stellar Winds, Astronomical Photography, Forbidden Bands, H Alpha Line, Infrared Spectra, Interstellar Matter, Oxygen, Stellar Mass Ejection, Ubv Spectra

Scientific paper

The planetary nebula Abell 35 appears strikingly different when photographed in forbidden O III as compared to its H-alpha image. The disparity is believed to be due to the effects of a stellar wind originating with a binary central star interacting with the nebular shell. The previously unidentified central star is shown to have a transverse velocity of 150 km/s and exhibits a wind having a terminal velocity of 185 km/s at a mass-loss rate of 3 x 10 to the -9th solar masses per year. The distance to the nebula is 360 pc, as determined photometrically from the visible member of the binary nucleus.

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