Cycles in other stars

Details Cycles in other stars Cycles in other stars

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.477...91c&link_type=abstract

In: Proceedings of the Second Solar Cycle and Space Weather Euroconference, 24 - 29 September 2001, Vico Equense, Italy. Editor:

Physics

4

Solar Activity, Stellar Activity, Chromospheres

Scientific paper

The index mostly used to measure stellar activity is the one combining Ca II H and K line fluxes. These lines, which are formed in the stellar chromosphere, are not particularly adequate to study cool stars, which are intrinsically faint and red. In this work we used observations of 69 southern stars to study different indexes of activity. We found that an index built from Hα can be used to study activity through the whole spectral range from F to M stars. We also built indexes from the Na D lines and the Ca I 4227 Å line, and found that, for stars with (B-V) < 1.15, these indexes are good color indicators, and only for stars with (B-V) > 1.15 these indexes correlate with activity.

Affiliated with

Also associated with

No associations

Rating

Cycles in other stars 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 Cycles in other stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cycles in other stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-779941