RT Journal Article
T1 The relationship between soft X-rays and the 1640 Å feature fluxes in late-type stars
A1 Rego Fernández, Manuel
A1 González Riestra, R.
A1 Fernández Figueroa, María José
AB The λ 1640 feature has been observed in a sample of late­ type stars of different luminosity classes. The intensity was measured from IUE low dispersion spectra, and it has been compared with the observed X-ray fluxes, finding a relationship between both quantities for "solar type" stars. The X-ray fluxes derived from this relationship for a reduced sample of stars are consistent with the observed ones in the case of "solar type" stars.	"Non solar type"   stars exhibit discrepancies that could be explained assuming that the λ 1640 feature is formed by contri­buters other than He II, which supply an important fraction of this emission in "solar type" stars. The obtained empirical relationship has been used to derive the X-ray flux for some stars that have not been observed in the X-ray range.
PB EDP Sciencies
SN 0004-6361
YR 1983
FD 1983
LK https://hdl.handle.net/20.500.14352/64989
UL https://hdl.handle.net/20.500.14352/64989
LA eng
NO © European Southern Observatory (ESO).© EDP Sciencies.
DS Docta Complutense
RD 12 may 2025