े Per: bright, but ill-understood

DOIResolve DOI: http://doi.org/10.1017/S1743921307006151
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EditorSearch for: Hartkopf, W. I.; Search for: Guinan, E. F.; Search for: Harmanec, P.
Proceedings titleProceedings of the International Astronomical Union
ConferenceBinary Stars as Critical Tools & Tests in Contemporary Astrophysics, 22-25 August, 2006, Prague, Czech Republic
Pages645649; # of pages: 5
Abstractγ Per looks like an unexceptional composite–spectrum binary, and has habitually been classified as G8 III+A3 V. Nevertheless, previous studies have produced conflicting results, of component masses that are uncomfortably high, or luminosities that are too large, or (most recently) showing that there is nothing abnormal about the components after all. However, new high-precision CCD spectroscopy and isolation of the secondary spectrum finds that mass of the giant is 3.9 M, which is indeed greater than would be expected from its published spectral type, and that both components have somewhat enhanced luminosities, thus re-opening the question of the origin and evolution of this somewhat unusual system.
Publication date
AffiliationNational Research Council Canada; NRC Herzberg Institute of Astrophysics
Peer reviewedNo
NPARC number13053072
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Record identifier9ad3f5f3-c3ec-47b5-bf91-63abda72ada9
Record created2009-11-25
Record modified2016-05-09
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