SIMBAD references

1999AJ....117.1852C - Astron. J., 117, 1852-1856 (1999/April-0)

Detection of a strong stellar flare from EUVE J1438-432.

CHRISTIAN D.J. and VENNES S.

Abstract (from CDS):

We present extreme-ultraviolet (EUV) observations of a strong flare from EUVE J1438-432, a source serendipitously detected with the Extreme Ultraviolet Explorer (EUVE) Right Angle Program. The flare was detected in the Lexan/boron (100 Å) band and showed a 16-fold increase over quiescent emission with a rise time of ∼10 ks and a decay time of ∼40 ks. Optical spectroscopy of objects within the EUVE pointing uncertainty circle revealed a pair of late-type stars (WT 486 and WT 487) both showing Balmer series in emission; either star is a good candidate for production of the flare. The peak luminosity of the flare is 5.7x1029 ergs.s–1 with a total energy of ∼5x1033 ergs. The flare energetics are about 2 orders of magnitude lower than the large EUV flare detected from AU Mic in 1992, but similar to other EUV-detected flares from late-type stars.

Abstract Copyright: ∼

Journal keyword(s): Stars: Flare - Stars: Late-Type - Ultraviolet Emission

Nomenclature: Fig.1: [CV99] N (Nos 1-3).

Simbad objects: 4

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