B Stars

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Summertime targets from Rich Townsend (June 2009)

Ap/Bp stars - chemically peculiar with strong magnetic fields



CU Vir (HD 124224) -- short period, quite bright, the best-known 'stellar pulsar' (main sequence star with ~0.5d pulsed radio emission).

14 12 15.8043

+02 24 33.958

B = 4.89

V = 5.01

A0Vp





V 2052 Oph (163472), which is a combination beta Cep/He-strong B2 star with a 3.64d period. Again, quite bright.

17 56 18.4009

+00 40 13.277

B = 5.883

V = 5.834

B2IV-V






V 1671 Cyg (HD 184927), which is a bit dimmer, and has a longer period, but appears to have a very oblique, strong field (seen from near pole on).

19 35 32.0099

+31 16 35.926

B = 7.29

V = 7.44

B2V