2007ApJ...669L..93Y

Query : 2007ApJ...669L..93Y

2007ApJ...669L..93Y - Astrophys. J., 669, L93-L95 (2007/November-2)

A mechanism for orbital period modulation and irregular orbital period variations in close binaries.

YUAN J. and QIAN S.

Abstract (from CDS):

Orbital period modulation is observed in many magnetically active close binaries. It can be explained by magnetic connection between two stars. Magnetic connection produces weak force between the two stars. As the magnetic field varies periodically, the orbital period also shows cyclical variations. The mechanism can also be used to explain irregular orbital period variations and orbital period jumps. The mean surface magnetic strength is calculated by using the Radia package, which is dedicated to 3D magnetostatics computation. On the basis of the results, a practical equation is given to calculate surface magnetic strength.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Close - Stars: Activity - Stars: Magnetic Fields

Simbad objects: 18

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Number of rows : 18
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 V* EQ Tau SB* 03 48 13.4355167856 +22 18 50.924168856   12.04 11.18 10.082 9.706 G2V 129 0
2 V* RW Tau Be* 04 03 54.3161404416 +28 07 33.494136636   8.130 8.08 8.76   B8Ve+K0IV 270 0
3 V* ZZ Aur EB* 05 45 42.1567820976 +41 08 59.225110944   11.49 11.04     A7 66 0
4 V* SV Cam SB* 06 41 19.0827100176 +82 16 02.435351448       9.0   G2IV-V 367 0
5 V* FG Hya SB* 08 27 03.9412969584 +03 30 52.329583548   10.62 10.04 9.544 9.401 G0 213 0
6 V* RT LMi SB* 09 49 48.3190999536 +34 27 15.423647004   12.11 11.35 11.084 10.781 F7V 79 0
7 V* XY Leo ** 10 01 40.4170488672 +17 24 32.602180644   10.66 9.68 8.855 8.474 K0V 287 0
8 V* TY Boo EB* 15 00 46.9394379816 +35 07 54.742318356   12.03 11.39 10.398 10.006 G3+G7 139 0
9 HD 139319 ** 15 33 51.05705 +63 54 25.6950           A9V+F7V 242 0
10 HD 139319A SB* 15 33 51.0591158448 +63 54 25.708209264   7.75 7.46     A5m 249 0
11 V* RT CrB RS* 15 38 03.0315653496 +29 29 13.957089684   10.97 10.22     G0 101 0
12 V* TU Her SB* 17 13 35.3658300768 +30 42 36.042435936   11.24 10.792 10.877   kA6hF0mF2 81 0
13 * U Sge SB* 19 18 48.4082723376 +19 36 37.722978540 6.23 6.61 6.58     B7III+K1III 385 0
14 BD+34 4217A SB* 20 58 13.4532832453 +35 10 29.672620146   10.95 10.109     ~ 267 0
15 BD+34 4217 ** 20 58 13.4533595470 +35 10 29.664154462     10.13     G9.5Ve+K3Ve 264 0
16 V* RT Lac RS* 22 01 30.7406691720 +43 53 25.643931396   10.092 8.84     G9+K1IVIV 278 0
17 V* AR Lac RS* 22 08 40.8182089680 +45 44 32.107863120 7.09 6.83 6.11     K0IVe+G5IV 745 0
18 V* DI Peg SB* 23 32 14.6757868152 +14 58 08.702585652   10.00 9.513     F0IVn 146 0

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