Rotational modulation and flares on RS Canum Venaticorum and BY Draconis-type stars. XV - Observations of Proxima Centauri and solar calibration data

Rotational modulation and flares on RS Canum Venaticorum and BY Draconis-type stars. XV - Observations of Proxima Centauri and solar calibration data

Results are reported from simultaneous Exosat and IUE observations of flaring in Proxima Cen on March 2, 1985. The data are presented in extensive tables and sample spectra and discussed in detail. The peak emission of the soft-X-ray flare is found to be about 3 x 10 to the 27th erg/sec, with energy...

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Veröffentlicht in:Astronomy and astrophysics (Berlin) 1990-06, Vol.232 (2 Ju), p.387-395
Hauptverfasser: Haisch, B. M., Butler, C. J., Foing, B., Rodono, M., Giampapa, M. S.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Astrophysics
Earth, ocean, space
Exact sciences and technology
Flare stars (uv ceti, rs canum venaticorum, fu orionis, r coronae borealis variables, etc.)
Stars
Variable and peculiar stars (including novae)
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Zusammenfassung:Results are reported from simultaneous Exosat and IUE observations of flaring in Proxima Cen on March 2, 1985. The data are presented in extensive tables and sample spectra and discussed in detail. The peak emission of the soft-X-ray flare is found to be about 3 x 10 to the 27th erg/sec, with energy about 3 x 10 to the 30th erg and an associated increase in Mg II flux to 17,000-67,000 erg/sq cm sec, or about an order of magnitude lower than the solar value. The presence of flare- and microflare-related processes heating the corona is inferred.
ISSN:0004-6361
1432-0746