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Some Properties of Stellar Transition Regions

Published online by Cambridge University Press:  12 April 2016

Mikael Saxner
Mikael Saxner*
Affiliation:
Astronomiska Observatoriet, Uppsala

Extract

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Among the strongest lines from stellar transition regions are the resonance lines of N V (1240Å), Si IV (1394 ,1403Å), and C IV (1549Å), which are all observable by the IUE.

In an earlier paper (Saxner, 198l) it was noticed that there is a correlation between the fluxes in these three lines. In Fig. 1 the ratio of the N V to the C IV flux is plotted against the ratio of the C IV to the Si IV flux. Verbally the correlation may be stated as follows: the Si IV flux and the N V flux are covarying; if one is strong the other also tends to be strong, and vice versa. In all cases the C IV line is the strongest.

Type
Session I: General Characteristics of Active Dwarfs
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 79 - 81
Copyright
Copyright © Reidel 1983

References

Jordan, C., 1969, MNRAS, 142, 501 Google Scholar
Saxner, M., 1981, Astron. Astrophys., l04, 240 Google Scholar