Abstract
Observations of enhanced spot active main sequence stars of solar type led to the formulation of the hypothesis which states that the rotational angular momentum, J/sub r/, of stars with spectral types later than F5 determines the intensity of their magnetic activity, bar A. Such very spot active stars are exclusively found as the components of fairly close binary stars, and show rotation periods smaller or more or less synchronous to the orbital period. Single stars of the lower main sequence are generally slow rotators, and do not show detectable activity in optical spectral regions, similar to the Sun if observed from stellar distances.
Citation Formats
Geyer, E H.
Solar rotation and activity in the past and their possible influence upon the evolution of life.
Germany: N. p.,
1980.
Web.
Geyer, E H.
Solar rotation and activity in the past and their possible influence upon the evolution of life.
Germany.
Geyer, E H.
1980.
"Solar rotation and activity in the past and their possible influence upon the evolution of life."
Germany.
@misc{etde_6815307,
title = {Solar rotation and activity in the past and their possible influence upon the evolution of life}
author = {Geyer, E H}
abstractNote = {Observations of enhanced spot active main sequence stars of solar type led to the formulation of the hypothesis which states that the rotational angular momentum, J/sub r/, of stars with spectral types later than F5 determines the intensity of their magnetic activity, bar A. Such very spot active stars are exclusively found as the components of fairly close binary stars, and show rotation periods smaller or more or less synchronous to the orbital period. Single stars of the lower main sequence are generally slow rotators, and do not show detectable activity in optical spectral regions, similar to the Sun if observed from stellar distances.}
place = {Germany}
year = {1980}
month = {Jan}
}
title = {Solar rotation and activity in the past and their possible influence upon the evolution of life}
author = {Geyer, E H}
abstractNote = {Observations of enhanced spot active main sequence stars of solar type led to the formulation of the hypothesis which states that the rotational angular momentum, J/sub r/, of stars with spectral types later than F5 determines the intensity of their magnetic activity, bar A. Such very spot active stars are exclusively found as the components of fairly close binary stars, and show rotation periods smaller or more or less synchronous to the orbital period. Single stars of the lower main sequence are generally slow rotators, and do not show detectable activity in optical spectral regions, similar to the Sun if observed from stellar distances.}
place = {Germany}
year = {1980}
month = {Jan}
}