1998A&A...335..179P

Query : 1998A&A...335..179P

1998A&A...335..179P - Astronomy and Astrophysics, volume 335179-182 (1998/7-1)

Orbital circularization in detached binaries with early-type primaries.

PAN K., TAN H. and SHAN H.

Abstract (from CDS):

Extending our previous study, the present paper reports on the discussion of the orbital circularization in 37 detached binaries with early-type primaries. From comparison of the theoretical predictions with the orbital eccentricities of our binary systems, we find that Zahn's circularization theories are substantially consistent with the observed data for overwhelming majority of our samples. However, we also note that three binaries of whom both components are asynchronized rotators possess circular orbits. How to understand the circularism of the three systems remains a problem not only to Zahn's theories, but to all other present circularization mechanisms.We think that studies on the circularization of pre-main-sequence binary systems could provide some clues for the problem.

Abstract Copyright: ∼

Journal keyword(s): stars: binaries, eclipsing - binaries: close - stars: evolution

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 * 21 Cas SB* 00 45 39.0765692400 +74 59 17.054172672   5.717 5.652     A2IV 222 0
2 * eta Ori bC* 05 24 28.61672 -02 23 49.7311 2.25 3.18 3.35 3.44 3.65 B1V+B2: 412 0
3 V* VV Ori SB* 05 33 31.4464933704 -01 09 21.859452468 4.26 5.16 5.34 5.39 5.59 B1V+B4.5V 272 0
4 * 31 Cam SB* 05 54 57.8261678880 +59 53 18.127157424 5.220 5.200 5.200     A2V 114 0
5 V* IM Mon SB* 06 23 01.4692765176 -03 16 37.090499952   6.408 6.548     B3V 98 0
6 V* RY Gem SB* 07 27 24.1728227544 +15 39 34.699185396   8.88 8.68     A0V:e+K0II 151 0
7 V* TU Cnc EB* 08 52 16.6528782000 +09 05 18.779251308   10.73 10.53     A5V 47 0
8 * 49 Leo ** 10 35 02.15893 +08 39 01.5434           A2V 118 0
9 * alf CrB SB* 15 34 41.2684881676 +26 42 52.866000089 2.19 2.22 2.24 2.21 2.25 A1IV 499 0
10 V* U Oph SB* 17 16 31.7137908168 +01 12 37.998551304   5.941 5.921     B3V 388 1
11 V* EG Ser SB* 18 26 02.1984899304 -01 40 51.349153692   8.41 8.24     A0IV/V 50 0
12 V* RZ Sct SB* 18 26 33.5232714792 -09 12 05.987275200 8.09 8.24 7.53     B2/3Ib/II 176 0
13 V* V451 Oph SB* 18 29 14.0426779320 +10 53 31.429623012   7.95 7.91     A0IV 167 0
14 V* RX Her SB* 18 30 39.2600750472 +12 36 40.330018404   7.35 7.29     A0Vv 186 0
15 V* HS Her SB* 18 50 49.7705985120 +24 43 11.940783384 8.180 8.580 8.560     B6III 126 0
16 V* DI Her SB* 18 53 26.2399243224 +24 16 40.792648332   8.46 8.47     B5III 274 0
17 V* BH Dra SB* 19 03 39.5419708392 +57 27 25.861535388   8.47 8.43     A1Vn 81 0
18 V* V805 Aql SB* 19 06 18.1995031128 -11 38 57.338921508   7.88 7.59     A3m 97 0
19 V* V889 Aql EB* 19 18 49.8402950736 +16 15 00.449818524   8.77 8.58     A 59 1
20 * sig Aql SB* 19 39 11.6423977488 +05 23 51.979984260 4.60 5.20 5.17     B3V 173 0
21 V* DV Aql Mi* 19 43 27.2992606272 -10 13 42.275036244   14.5 13.42     ~ 17 0
22 V* V380 Cyg SB* 19 50 37.3267754400 +40 35 59.135141652 4.86 5.613 5.680     B1.1III+B2.5/3V: 305 0
23 V* V477 Cyg SB* 20 05 27.6886714176 +31 58 18.108420780   8.68 8.53     A1V 219 0
24 V* DR Vul EB* 20 13 46.8508993704 +26 45 01.628896644   8.94 8.71     B8 89 0
25 HD 193576 WR* 20 19 32.4229160448 +38 43 53.959035756 8.15 8.53 8.00     WN5+O6II-V 721 0
26 V* V478 Cyg SB* 20 19 38.7476920032 +38 20 09.195280836   9.16 8.767     B0Vp 195 0
27 V* Y Cyg SB* 20 52 03.5771840640 +34 39 27.486121104 6.31 7.23 7.32     O9.5IV+O9.5IV 382 0
28 V* EE Peg SB* 21 40 01.8804448032 +09 11 05.150643900   7.08 6.96     A1III 172 0
29 V* EK Cep SB* 21 41 21.5042268336 +69 41 34.112933916   7.95 7.89     A0V 222 0
30 * del Cap SB* 21 47 02.4442395 -16 07 38.233507 3.22 3.12 2.83 2.59 2.43 kA5hF0mF2III 284 0
31 V* AW Peg SB* 21 52 20.6904398472 +24 00 44.333354376   7.99 7.65     A3III 106 0
32 V* CM Lac SB* 22 00 04.4501141616 +44 33 07.736337396   8.40 8.21     A3m 168 0
33 V* XZ Cep SB* 22 32 25.0788763008 +67 09 02.479638996   9.22 8.51     O9.5V 107 0
34 V* AH Cep SB* 22 47 52.9412851944 +65 03 43.795145556 6.53 7.10 6.88     B0.2V+B2V 227 0
35 V* NY Cep SB* 22 58 39.7987260456 +63 04 37.752984732 7.23 7.74 7.4     B5 160 0
36 HD 218066 Be* 23 04 02.2270838832 +63 23 48.722060508 7.50 7.97 7.6     B1.5Vn 290 0
37 V* AR Cas SB* 23 30 01.9406369832 +58 32 56.112185112 4.18 4.760 4.886     B3V 222 0

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