2006MNRAS.369L..61H

Query : 2006MNRAS.369L..61H

2006MNRAS.369L..61H - Mon. Not. R. Astron. Soc., 369, L61-L65 (2006/June-2)

Discovery of magnetic fields in the β Cephei star {xi1} CMa and in several slowly pulsating B stars.

HUBRIG S., BRIQUET M., SCHOLLER M., DE CAT P., MATHYS G. and AERTS C.

Abstract (from CDS):

We present the results of a magnetic survey of a sample of eight βCephei stars and 26 slowly pulsating B (SPBs) stars with the FOcal Reducer low dispersion Spectrograph at the Very Large Telescope. A weak mean longitudinal magnetic field of the order of a few hundred Gauss is detected in the βCephei star ξ1CMa and in 13 SPB stars. The star ξ1CMa becomes the third magnetic star among the βCephei stars. Before our study, the star ζCas was the only known magnetic SPB star. All magnetic SPB stars for which we gathered several magnetic field measurements show a field that varies in time. We do not find a relation between the evolution of the magnetic field with stellar age in our small sample. Our observations imply that βCephei and SPB stars can no longer be considered as classes of non-magnetic pulsators, but the effect of the fields on the oscillation properties remains to be studied.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): Hertzsprung-Russell (HR) diagram - stars: fundamental parameters - stars: individual: ξ1CMa - stars: magnetic fields - stars: oscillations

Simbad objects: 37

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Number of rows : 37
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * 53 Psc ** 00 36 47.3110003896 +15 13 54.190332948 5.06 5.714 5.863     B2.5V 126 1
2 * zet Cas bC? 00 36 58.2844874846 +53 53 48.877599163 2.58 3.47 3.66 3.74 3.95 B2IV 470 0
3 * del Cet bC* 02 39 28.9568473856 +00 19 42.631195332 2.97 3.85 4.07     B2IV 395 0
4 * tau08 Eri SB* 03 53 42.7023562560 -24 36 44.021417544   4.496 4.623     B6V 123 0
5 HD 26326 Pu* 04 09 17.8360611792 -16 23 09.080258964   5.286 5.435     B5IV 87 0
6 HD 28114 bC* 04 26 21.1022491080 +08 35 24.952062192 5.65 6.046 6.055     B6IV 84 1
7 * nu. Eri bC* 04 36 19.1419185396 -03 21 08.857744927 2.82 3.737 3.928     B2III 407 0
8 HD 34798 Pu* 05 19 17.4371850792 -18 31 11.705799792 5.65 6.23 6.39     B5Vs 93 0
9 * bet CMa bC* 06 22 41.9853527 -17 57 21.307352 0.77 1.73 1.97 2.11 2.35 B1II-III 748 0
10 HD 45284 * 06 26 13.1727488232 -07 21 41.188970196   7.27 7.37     B5/7IV 30 0
11 V* V727 Mon EB* 06 31 09.3417144960 +09 56 23.313181308   8.19 8.00     B3IV 42 0
12 * ksi01 CMa bC* 06 31 51.3662820799 -23 25 06.319934859 3.10 4.09 4.33 4.45 4.72 B0.7IV 336 0
13 HD 53921 SB* 07 03 15.09928 -59 10 41.1857           B9III+B8V 71 0
14 * omi Vel Pu* 08 40 17.5993322082 -52 55 18.875623881 2.8 3.44 3.63     B3/5(V) 181 1
15 HD 74560 SB* 08 42 25.3866034128 -53 06 50.343377699 3.97 4.655 4.815     B3IV 182 0
16 HD 85953 Pu* 09 53 50.0989236576 -51 08 48.155931060 5.02 5.777 5.932     B2.5III 80 1
17 HD 92287 SB* 10 38 02.6423647248 -57 15 22.689748476 5.14 5.749 5.876     B3IV 85 0
18 * bet Cru bC* 12 47 43.26877 -59 41 19.5792 0.03 1.02 1.25 1.38 1.64 B1IV 360 1
19 V* V869 Cen SB* 14 09 35.0324964096 -51 30 16.832689380   5.913 5.961     B8V 96 0
20 V* V836 Cen bC* 14 46 25.7601403800 -37 13 20.082887904 7.04 7.88 8.05     B2 124 0
21 * zet Cir Pu* 14 54 42.5860330320 -65 59 27.977958456   6.03 6.09     B2/3Vn 58 0
22 HD 138764 Pu* 15 34 26.5142062512 -09 11 00.380211288 4.63 5.08 5.17 5.21 5.33 B5V 167 0
23 * 25 Ser SB* 15 46 05.6365266672 -01 48 15.085342728 4.96 5.37 5.39     B8IV/V 121 0
24 HD 143309 * 16 03 01.4960535504 -60 20 10.708560528 8.99 9.33 9.30     B8/9Ib/II 34 0
25 * tet Oph bC* 17 22 00.5793468 -24 59 58.366974 2.18 3.03 3.26 3.38 3.58 OB 350 0
26 V* V994 Sco bC* 17 39 37.5915156024 -32 19 12.497350260 6.74 7.13 7.16     B3IV/V 64 1
27 * kap Sco bC* 17 42 29.27520 -39 01 47.9391 1.32 2.211 2.386     B1.5III 250 0
28 V* V539 Ara SB* 17 50 28.3930000656 -53 36 44.664776352   5.60 5.71     B2/3Vnn 190 0
29 V* V2052 Oph bC* 17 56 18.4001168880 +00 40 13.273317228 5.28 5.874 5.820     B3III 222 0
30 HD 169820 ** 18 25 55.2301152192 +14 57 58.450695732   6.321 6.364     B9V 57 0
31 HD 177863 SB* 19 07 08.3266173557 -18 44 17.407077555   6.243 6.293     B8V 79 0
32 HD 181558 Pu* 19 21 37.1135468520 -19 14 04.045448508 5.65 6.16 6.26     B5III 70 0
33 * 3 Vul Pu* 19 22 50.8855509384 +26 15 44.667340056 4.53 5.065 5.192     B7V 133 0
34 * bet Cep bC* 21 28 39.5968513 +70 33 38.574681 2.05 3.01 3.23 3.33 3.55 B0.5IIIs 756 0
35 HD 206540 * 21 42 32.9604290136 +10 49 27.536143944   5.926 6.051     B5IV 72 0
36 * 16 Peg Be* 21 53 03.7686220732 +25 55 30.489021805 4.24 4.921 5.081     B6IIIe 175 0
37 * ksi Oct Pu* 22 50 22.8139009656 -80 07 25.841844408 4.7 5.180 5.311     B6V 100 0

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