Did the young Sun rotate at 100 km/s

Details Did the young Sun rotate at 100 km/s Did the young Sun rotate at 100 km/s

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.220..213d&link_type=abstract

In ESA The Hydromagnetics of the Sun p 213-215 (SEE N85-25091 14-92)

Physics

Solar Rotation, Stellar Evolution, Stellar Spectra, Sun, H Alpha Line, K Stars, Main Sequence Stars, Periodic Variations, Pleiades Cluster, Spectral Emission, Stellar Winds

Scientific paper

The H alpha emission with full width at its base of 700 km/sec was observed in the young main sequence K star, HII 1833 of similar mass to the Sun. The centroid and the width of the emission vary synchronously with the 0.24-day rotation period or this Pleiades star. Based on the ratio H alpha/H beta, the absence of forbidden lines, and the inferred gas kinematics, this star must have an extended (chromospheric) emission region of order 1 stellar radius in size. The periodic Doppler shifts of H probably arise from a wind with oppositely directed streams. If a significant fraction of the high velocity material escapes from the star it will spin down in or = 10 million yr. This suggests that its remarkable properties represent a natural, though transient stage in the evolution of solar-type stars.

Affiliated with

Also associated with

No associations

Rating

Did the young Sun rotate at 100 km/s does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Did the young Sun rotate at 100 km/s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Did the young Sun rotate at 100 km/s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1753331