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The relationship between soft X-rays and the 1640 Å feature fluxes in late-type stars

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dc.contributor.authorRego Fernández, Manuel
dc.contributor.authorGonzález Riestra, R.
dc.contributor.authorFernández Figueroa, María José
dc.date.accessioned2023-06-21T02:09:10Z
dc.date.available2023-06-21T02:09:10Z
dc.date.issued1983
dc.description© European Southern Observatory (ESO). © EDP Sciencies.
dc.description.abstractThe 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.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/32914
dc.identifier.issn0004-6361
dc.identifier.officialurlhttp://adsabs.harvard.edu/abs/1983A%26A...119..227R
dc.identifier.relatedurlhttp://www.aanda.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/64989
dc.issue.number2
dc.journal.titleAstronomy and astrophysics
dc.language.isoeng
dc.page.final232
dc.page.initial227
dc.publisherEDP Sciencies
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordEmission lines
dc.subject.keywordX-rays
dc.subject.keywordLate type stars
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleThe relationship between soft X-rays and the 1640 Å feature fluxes in late-type stars
dc.typejournal article
dc.volume.number119
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