Difference between revisions of "B Stars"

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Summertime targets from Rich Townsend (June 2009)
 
Summertime targets from Rich Townsend (June 2009)
 +
 
Ap/Bp stars - chemically peculiar with strong magnetic fields
 
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).
 
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  
+
14 12 15.8043  
 +
 
 
+02 24 33.958
 
+02 24 33.958
  
B 4.89
+
B = 4.89
V 5.01
+
 
 +
V = 5.01
  
 
A0Vp
 
A0Vp
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V 2052 Oph (163472), which is a combination beta Cep/He-strong B2 star with a 3.64d period. Again, quite bright.
 
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  
+
17 56 18.4009  
 +
 
 
+00 40 13.277
 
+00 40 13.277
  
B 5.883
+
B = 5.883
V 5.834
+
 
 +
V = 5.834
  
 
B2IV-V
 
B2IV-V
Line 39: Line 44:
 
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).  
 
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  
+
19 35 32.0099  
 +
 
 
+31 16 35.926
 
+31 16 35.926
  
B 7.29
+
B = 7.29
V 7.44
+
 
 +
V = 7.44
  
 
B2V
 
B2V

Latest revision as of 22:09, 14 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