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i , ve .

. v_e \cdot \sin i, v_e  , i . i , . , i , , v_e \cdot \sin i[2]. . , , : \overline{v_e \cdot \sin i} = \pi / 4 v_e[4].

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(α ).   317±3 / 15,9 , 86 % , .

32 % , [9]. .

(break-up velocity)  , , , . [10].

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, , . , . , , HD 31993[11][12]. , , AB [1] [13].

, . . . , [14][15].

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, , - . , 100 , . . [16][17].

F5 O5 [9][18]. . , B. , .


 ve
(/)[19]		 vmax
(/)[4]		 v
(/)[4]		 R_\odot[20] t
()		 T
(.)
Ҹ , 1
O5 190 400 12 ~70 3
B0 200 420 630 6 35 1.5
A0 190 320 500 2,25 15 0,6
F0 100 180 450 1,6 20 0,8
F5 30 100 400 1,4 60 2,5
G0 4 100 400 1 300 12
K, M 1 0,6 >700 >30
ve ; vmax ; v , ; R_\odot ; t T .

, :

\Omega_e \propto t^{-\frac{1}{2}}

\Omega_e  t  [21]. (Andrew P. Skumanich), 1972 [22].

(Gyrochronology)  , [23].

, . , . 15 / , , . , . , , [24].

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, , , . . , , , . . , , , , [25].

- . . , , . , , . , [25].

, . , [26].

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  , , , , . , - , , , . , , , - [27]. (. .)

1,44 , Ia. , , , , . , , , . , , , [28].

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:
( ) . .

,   , , . 1,35 2,1 . , , [29].

, . . , . , , [30].

[] ׸

׸ , , . , , . , , . , . , (. . « »)[31]. , 98,7 % [32].

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