B Stars: Difference between revisions

Revision as of 03:09, 15 June 2009

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

@@ Line 1: / Line 1: @@
 Summertime targets from Rich Townsend (June 2009)
 Ap/Bp stars - chemically peculiar with strong magnetic fields
@@ Line 6: / Line 7: @@
 CU Vir (HD 124224) -- short period, quite bright, the best-known 'stellar pulsar' (main sequence star with ~0.5d pulsed radio emission).
 12 15.8043
-24 33.958
++02 24 33.958
 B = 4.89
@@ Line 26: / Line 27: @@
 +00 40 13.277
-B 5.883
+B = 5.883
-V 5.834
+V = 5.834
 B2IV-V
@@ Line 43: / Line 45: @@
 +31 16 35.926
-B 7.29
+B = 7.29
-V 7.44
+V = 7.44
 B2V