Discovery of X-rays from the 40 Eridani system

Details Discovery of X-rays from the 40 Eridani system Discovery of X-rays from the 40 Eridani system

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...231l.137c&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 231, Aug. 1, 1979, p. L137-L140. Research supported by the Miller Fo

Astronomy and Astrophysics

Astrophysics

12

Flare Stars, White Dwarf Stars, X Ray Sources, Deposition, Signal To Noise Ratios, Stellar Coronas, Triple Stars

Scientific paper

The detection of a point source of soft X-rays (H0405-08) consistent with the position of the nearby triple star system 40 Eridani is reported. The source, which has a temperature near 10 million K, has a flux of 3 x 10 to the -11th erg/sqcm-sec at earth, implying a luminosity of 9(+ or -3) x 10 to the 28th erg/s at the distance of 40 Eridani. The likely source of the bulk of the X-rays is considered, including the K1 dwarf, the DA white dwarf, the dwarf M4 flare star, or accretion onto the white dwarf.

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