Indications for rotation modulation and short-term variations in the CA II H and K emission from cool main sequence stars

Details Indications for rotation modulation and short-term variations in the CA II H and K emission from cool main sequence stars Indications for rotation modulation and short-term variations in the CA II H and K emission from cool main sequence stars

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....96..401m&link_type=abstract

Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 401-405.

Astronomy and Astrophysics

Astrophysics

12

H Lines, K Lines, Late Stars, Main Sequence Stars, Stellar Rotation, Stellar Spectrophotometry, Calcium, Emission Spectra, Feasibility Analysis, Resonance Lines

Scientific paper

Ca II H and K emission fluxes from 14 F, G and K type maim-sequence stars have been monitored over a span of 10 successive nights. The results suggest that rotation periods may he inferred for some of the stars from a corresponding modulation in the Ca II H and K signal. Most stars also show variations that are much shorter in duration than the expected rotation periods.

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