M2-9 - A bipolar nebula with a wind-driven shell

Details M2-9 - A bipolar nebula with a wind-driven shell M2-9 - A bipolar nebula with a wind-driven shell

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.194..903w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 194, Mar. 1981, p. 903-910.

Astronomy and Astrophysics

Astronomy

29

Electron Density (Concentration), H Alpha Line, Nebulae, Radial Velocity, Stellar Winds, Brightness Temperature, Density Measurement, Emission Spectra, Line Shape, Velocity Measurement

Scientific paper

Radial velocities and electron densities have been measured at many positions over the peculiar bipolar nebula M2-9, and high velocity (equal to or greater than 200 km/s) wings have been detected on H-alpha profiles. The velocity features over the core are interpreted as an expanding circumstellar shell driven by a stellar wind. The nebular lobes may define a direction of flow.

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