Rotational modulation of chromospheric emission in cool giants and 'hybrid' stars

Details Rotational modulation of chromospheric emission in cool giants and 'hybrid' stars Rotational modulation of chromospheric emission in cool giants and 'hybrid' stars

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288..310b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 1, 1985, p. 310-328.

Astronomy and Astrophysics

Astrophysics

19

Chromosphere, Giant Stars, Late Stars, Stellar Rotation, Ultraviolet Spectra, Emission Spectra, H Lines, Iue, K Lines, Magnesium, Periodic Variations

Scientific paper

Archival data from the International Ultraviolet Explorer have been used to study temporal variations of the Mg II h and k emission lines in eight late-type giants. Evidence is presented that the variations are periodic in nature. It is argued that the periodicities can be interpreted in terms of rotation. It is found that the four fastest rotators in the sample are 'hybrid' stars.

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