Mass loss and rotation in early-main-sequence B stars

Details Mass loss and rotation in early-main-sequence B stars Mass loss and rotation in early-main-sequence B stars

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...240l..59f&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 240, Aug. 15, 1980, p. L59-L61.

Astronomy and Astrophysics

Astrophysics

20

B Stars, Early Stars, Main Sequence Stars, Stellar Mass Ejection, Stellar Rotation, H Alpha Line, Radiation Pressure, Stellar Luminosity, Stellar Spectra

Scientific paper

Using a CCD detector, high signal-to-noise ratio, intermediate-resolution spectroscopy of H-alpha in 60 normal main-sequence stars of spectral type B0-B3 was performed. A majority of the stars show asymmetry in H-alpha, which is interpreted as mass loss. The mass loss is coupled to the rotational velocity. A minimum velocity of around 200 km/s is required to trigger significant mass loss in these stars. The mass loss occurs only parallel to the equatorial plane; no mass flow is observed over the poles.

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