The D(3) 5876-A line in main sequence stars - A search for rotational modulation in Epsilon ERI and Kappa CET

Details The D(3) 5876-A line in main sequence stars - A search for rotational modulation in Epsilon ERI and Kappa CET The D(3) 5876-A line in main sequence stars - A search for rotational modulation in Epsilon ERI and Kappa CET

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...128..110l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 128, no. 1, Nov. 1983, p. 110-113.

Astronomy and Astrophysics

Astrophysics

17

Chromosphere, D Lines, Late Stars, Main Sequence Stars, Stellar Spectra, Absorption Spectra, Helium, Spectral Line Width, Visible Spectrum

Scientific paper

High-resolution, low-noise spectra of the He I 5876 Å (D3) absorption line in 6 main sequence stars are discussed. A marked variation of D3 in κ Cet over a 17 d period is attributed to rotational modulation: the equivalent width Wλ varied between 17.4 and 25.8 mÅ. No modulation is seen in ɛ Eri. The D3 line was also seen in spectra of χ1 Ori, χ Eri, and ζ Dor, but not seen in ο2 Eri.

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