Структура магнитных полей медленных СР ротаторов: HD 9996

HD 9996, HD188041 1)
1
1
2
,
2
e-mail: glagol@sao.ru
D-14471, Potsdam, Gontardstr 130, Germany, e-mail: ewald-gerth@t-online.de
A
The structure of the magnetic field of the slow rotators:
HD9996, HD 188041
Yu.V. Glagolevskij, E. Gerth
Abstract. This is the final paper on the research of the structure of magnetic fields of
stars with large periods of rotation. A preliminary conclusion is made about the absence of
influence of orientation and magnetic field strength on the velocity of rotation. It is shown
that the orientation of dipole structures at slow magnetic rotators is random, as well as at
rotators. The hypothesis of braking the rotation of magnetic stars under the influence of
magnetic fields is called in question. The origin of
stars is probably connected with
their initial slow rotation.
Key words: stars: magnetic fields – individual: HD9996, HD188041
1.
( > 25d)
7
[1 – 4]
[5].
________________________________________________________________________________________
1
) Preprint. Submitted to Zhurnal Astrofiziki, November 2007
Available by the homepage: www.ewald-gerth.de/120.pdf
1
(λ -
δ-
i
–
Bs –
,
i
–
i
vsini.
v = 50.6 P/R,
v
–
,
R –
vsini
vsini,
i,
Bs.
Bs/Be
2.
±1°.
i ,
HD 9996.
HD 9996,
Be-Φ
[6 – 10].
Bs
[9,11],
i.
Bs ≈ 5
[10] Bs = 2.5 kG.
[8] Bs = 2.2
–
[12].
0.48 – 0.79
Bs,
β
–
-
β,
Bs ≈ 5 kG.
Bs
Bs –
1.
2
HD9996.
-
–
-
-
–
–
β;
β,
–
β.
1
HD9996
β
λ
18°
198°
+
δ
78°
-78°
β
12°
i
89.5°
β
89.5°
i
24.0°
-8100
+8100
β
B.
λ
18°
198°
+
3.
δ
0.5°
-0.5°
- 8710
+8710
HD 188041.
HD 188041
[13-18],
Bs.
[13],
[11,19].
Bs - Φ
4
Bs
Φ
Bs
[13]
= JD 2432323 + 226E
3
β
–
-Φ
HD188041.
–
–
–
–
–
–
β,
–
β,
β,
–
β.
–
–
β.
–
–
Bs-Φ.
.
4
Bs - Φ.
2
HD188041
β
+
λ
0°
180°
β
δ
-84°
84°
i
6°
-5780
+5780
80.5°
β
+
λ
0°
180°
β
δ
-13.2°
13.2°
i
76.8°
- 6310
+6310
14°
Φ
.
β.
–
β
–
β.
HD188041
0.07
3
HD188041
β
+
λ
0°
180°
δ
-83°
83°
β
7°
i
83°
-7400
+4850
∆ = - 0.07
β.
+
λ
0°
180°
δ
-10°
10°
β
80°
i
16°
-7540
+5580
∆ = - 0.05
5
HD188041
± 10°,
i, β
± 30 –50
δ
± 1°,
λ
4.
4
HD
2453
9996
12288
116458
126515
187474
188041
200311
201601
Bs, G
547
8000:
35
4600
12300
5000
3600
8600
3800
,
521
4800
7900
148
130
2345
224
52
72
β
80
12:
66
12
86
24
20
86
50
1
1
2
2
3
1
4
1)
[20],
2)
[4, 21]
Bs
3)
[4]
6
β.
[21].
[22].
4)
HD 9996,
i,
Bs.
5)
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2.
82, 1, 2005.
3.
48, 575, 2005.
4.
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Kudryavtsev, I.I. Romanyuk, Nizhnij Atkhyz, 2004, p.152.
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9. G. Scholz, Astron. Nachr., 229, 309, 1978.
10. G. Scholz, Astroph. Space. Sci., 94, 159, 1983.
11. G. Mathys, S. Hubrig, J.D. Landstreet, T. Lanz, J .Manfroid, Astron. Astrophys.
Suppl. Ser., 123, 353, 1997.
12. V.D. Bychkov, L.V. Bychkova, J.Madey, Astron. Astrophys., 407, 631, 2003.
13. H.W. Babcock, Astrophys. J., 120, 66, 1954.
14. H.W. Babcock, Astrophys. J.Suppl.Ser., 30, 141, 1958.
15. S.C. Wolff, Astrophys. J., 157, 253, 1969.
16. S.C. Wolff, Astrophys. J., 158, 1231, 1969.
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21.
48, 229, 2005.
22.
58, 17, 2005.
7