Calcium H and K emission in AR Lacertae

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DOIResolve DOI: http://doi.org/10.1086/112942
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TypeArticle
Journal titleAstronomical Journal
Volume86
Pages766770; # of pages: 5
Subjectcalcium; eclipsing binary stars; emission spectra; H lines; K lines; stellar spectra; dwarf stars; line spectra; stellar spectrophotometry; subgiant stars; variable stars
AbstractThe behavior of the Ca II H and K emission lines as seen on 64 high-quality spectra of the RS CVn-type binary star AR Lac is investigated. Evidence is found for rapid (hourly) variability in both the emission strength and line profiles. Although a number of unusual events were observed, there appears to be no correlation between the emission intensity and orbital phase of the system or between the emission strength and the migrating photometric wave phenomena.
Publication date
LanguageEnglish
AffiliationNRC Herzberg Institute of Astrophysics; National Research Council Canada
Peer reviewedYes
NRC number18910
NPARC number21275045
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Record identifier19bc4fd7-debc-4158-b479-2db8e21a671d
Record created2015-05-06
Record modified2016-05-09
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