SIMBAD references

2000ApJ...544..475M - Astrophys. J., 544, 475-480 (2000/November-3)

Extreme-ultraviolet flares in an F2 star.


Abstract (from CDS):

We report on the coronal properties of two early F dwarfs. For both stars, spectroscopic data reveal a hot corona with material at temperatures as high as 107.1-107.2 K. The EUV photometric observations of one of the stars (HR 120: F2) reveal two large flares with rapid decay times. The rapid decays are in striking contrast with previously published slowly decaying flares on a late type F star (HR 1817: F8/9). Analysis of decay times suggests that the loop sizes which flared in the F2 star are significantly shorter than those which flared in the F8/9 star. We discuss these results in the context of a proposal made by Giampapa & Rosner.

Abstract Copyright:

Journal keyword(s): Stars: Activity - Stars: Coronae - stars: individual (HR 120, 71 Taurus)

Simbad objects: 4

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