ISSN:
1572-946X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Precise photometric observations of stars in the double cluster h and Ξ Persei reveal a large spread in the colours and magnitudes of the upper Main-Sequence; half of the stars are variables that are Be stars or related stars. The reported age difference between both clusters is found to be spurious. Rotation apparently affects both the intrinsic and the observed colours of the early-type stars in h and Ξ Persei. This result questions the validity of photometric calibrations that heavily rely on h and Ξ Persei or similar clusters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00640694
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