Abstract
view Abstract Citations (13) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Period Study of AR Lacertae Kim, Chun-Hwey Abstract Fifteen new times of minimum light are presented for AR Lac. Times of minimum light obtained between December 1982 and November 1986 confirm that the period of the system has decreased since the early 1960's. Three possible explanatory mechanisms are examined (abrupt changes of period due to mass transfer, a light-time effect due to a hypothetical third body, and anisotropic mass ejection), but none seem to explain the period variation. A conceptually new way of considering this variation. Publication: The Astronomical Journal Pub Date: November 1991 DOI: 10.1086/116001 Bibcode: 1991AJ....102.1784K Keywords: Eclipsing Binary Stars; Stellar Orbits; Variable Stars; Bl Lacertae Objects; Light Curve; Orbital Elements; Astronomy; STARS: ECLIPSING BINARIES; STARS: VARIABLES full text sources ADS | data products SIMBAD (6)
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