Chromospheric emission in open cluster red giants

Details Chromospheric emission in open cluster red giants Chromospheric emission in open cluster red giants

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..217j&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 217-21

Astronomy and Astrophysics

Astrophysics

Chromosphere, Open Clusters, Red Giant Stars, Stellar Activity, Stellar Spectra

Scientific paper

The authors undertook a preliminary study of M67 giants, and succeeded
in observing two stars on the upper giant branch. Both of the spectra
showed Mg II emission, indicative of activity. Ground-based spectra of
the Ca II K-line, although only weakly exposed, confirm the
chromospheric emission.

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