Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...224..584s&link_type=abstract
Astrophysical Journal, Part 1, vol. 224, Sept. 1, 1978, p. 584-594.
Astronomy and Astrophysics
Astrophysics
37
Dwarf Stars, G Stars, Main Sequence Stars, Spectral Correlation, Stellar Atmospheres, Stellar Rotation, Chromosphere, Data Reduction, Emission Spectra, Fourier Analysis, Statistical Correlation, Stellar Evolution, Stellar Spectra
Scientific paper
Dissection of the spectral profiles of 14 field G dwarfs, including the sun as the control star, into their macroturbulent and rotational broadening components is carried out in both the wavelength and Fourier frequency domains. The stars are divided into young, intermediate-age, and old classes, with the sun placed in the intermediate class. The results indicate a marginal rotation-age anticorrelation as well as a more significant anticorrelation of photospheric macroturbulence with age among field G stars. It is suggested that macroturbulence can be used as an intermediate-scale age indicator for G stars that are too old to be dated on the basis of their Li content, K-line emission, or rotational velocities. Some parallels concerning the differences between young and old stars and active and quiet regions of the sun are discussed. The physical cause of the age-macroturbulence relation is considered.
No associations
LandOfFree
An anticorrelation between macroturbulence and age in G stars near the main sequence 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 An anticorrelation between macroturbulence and age in G stars near the main sequence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An anticorrelation between macroturbulence and age in G stars near the main sequence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-938842