2010MNRAS.401..257K

Query : 2010MNRAS.401..257K

2010MNRAS.401..257K - Mon. Not. R. Astron. Soc., 401, 257-274 (2010/January-1)

Synchronization and circularization in early-type binaries on main sequence.

KHALIULLIN K.F. and KHALIULLINA A.I.

Abstract (from CDS):

We showed in a preceding paper based on an analysis of the observed rates of apsidal motion that synchronization in early-type eclipsing binaries continues on the main sequence, and the observed synchronization times, tsyn, agree with the Zahn's theory and are inconsistent with the shorter time-scale proposed by Tassoul. It follows from this that circularization in early-type binaries must also proceed in accordance with the Zahn's theory because the circularization times, tcirc, in both theories are rather tightly related to tsyn via relation tcirc~αtsyn, where α is the orbital-to-axial momentum ratio.

To further investigate this problem, we compile a catalogue of 101 eclipsing binaries with early-type main-sequence components (M1,2> 1.6M☉). We determine the ages, t, and circularization time-scales, tcirc, for all these systems in terms of the two competing theories by comparing observational data with modern models of stellar evolution of Claret and atmospheric models of Kurucz. We compute tcirc with the allowance for the evolutionary variations of the physical parameters of the components and, for the first time in such studies, also take into account the variations of the orbital parameters (P, a, e) in the process of circularization subject to the conservation of the total angular momentum.

The results of these computations show that the mechanism of orbital circularization in early-type close binary systems (CBSs) suggested by Tassoul is, like in the case of synchronization, inconsistent with observational data. At the same time, the Zahn's mechanism, which is based on the dissipation of the energy of dynamic tides in the upper layers of the envelopes of CBSs components due to non-adiabaticity of these layers, agrees satisfactorily with observations.


Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): binaries: close - binaries: eclipsing - stars: early-type - stars: evolution - stars: fundamental parameters

VizieR on-line data: <Available at CDS (J/MNRAS/401/257): table1.dat table2.dat refs.dat>

Simbad objects: 109

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Number of rows : 109
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* V397 Cep SB* 00 03 23.9717871480 +73 10 28.189680492   7.54 7.40     A2 51 0
2 V* MU Cas EB* 00 15 51.5603463336 +60 25 53.642838468   11.12 10.80     A0 58 0
3 V* V744 Cas EB* 00 21 56.6862422520 +53 28 51.138534396   8.50 8.43     B9 22 0
4 2dFS 498 EB* 00 44 08.6709754440 -73 14 18.374346168 13.25 14.08 13.86 14.50 14.38 B0(IV) 16 0
5 OGLE SMC-SC5 38089 EB* 00 49 01.8351821616 -73 06 07.364853252 14.02 14.83 14.85 15.35 15.17 ~ 16 0
6 SV* HV 1479 EB* 00 49 40.5664259168 -73 00 22.903193897   15.81 15.93 15.89 15.99 ~ 12 0
7 MOA J005134.7-724546 EB* 00 51 34.8533012400 -72 45 46.388796552 14.83 15.74 16.00 16.06 16.01 B0+B0/3 17 0
8 OGLE SMC-SC6 11143 EB* 00 51 39.6980093688 -73 18 45.341632440   15.99 16.12   16.22 ~ 9 0
9 OGLE SMC-SC6 67221 EB* 00 52 06.2398371240 -72 45 14.777297748   15.12 15.21 15.37 15.30 ~ 10 0
10 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
11 V* V364 Cas SB* 00 52 43.0118622456 +50 28 10.109127648   11.13 10.75 10.255   A7 45 0
12 MOA J005340.4-725222 LP* 00 53 40.40 -72 52 22.4   15.71 15.89 16.04 16.00 B1+B1/2 14 0
13 OGLE SMC106.5 85 EB* 00 54 33.2195742600 -73 10 39.901701144   15.51 15.69 15.83 15.76 ~ 13 0
14 2dFS 1701 EB* 01 02 46.3011990720 -72 24 44.487274860   14.70 14.95 15.25 15.15 B0.5(IV) 15 0
15 OGLE SMC113.6 33459 EB* 01 03 41.4445349352 -72 03 07.275010680   15.94 16.14   16.30 ~ 9 0
16 * zet Phe SB* 01 08 23.0805843521 -55 14 44.736015873   3.908 4.014     B6V+B9V 243 0
17 V* OX Cas EB* 01 09 00.0985736544 +61 28 14.847725676 9.71 10.18 9.9     B6+G0 101 0
18 V* V459 Cas EB* 01 11 29.9132644248 +61 08 48.061774392   10.55 10.36     A2 77 0
19 * 1 Per SB* 01 51 59.3200840608 +55 08 50.583693732 4.51 5.34 5.52     B1.5V 156 0
20 V* V615 Per EB* 02 19 01.6485064968 +57 07 19.013821536   13.401 13.047   12.5110 B5.9V 34 0
21 V* V618 Per EB* 02 19 11.8379891952 +57 06 40.901219676   15.175 14.6892   13.9857 B9.4V 22 0
22 V* V621 Per EB* 02 22 09.7108878600 +57 07 02.305907292 9.14 9.68 9.4000   7.9369 B1.5I 85 0
23 V* XY Cet SB* 02 59 33.5321865840 +03 31 03.250518348   9.04 8.75     A8Vm+F0Vm 105 0
24 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
25 V* TZ For SB* 03 14 40.0925678952 -35 33 27.594929088   7.620 6.878     F7III+G8III 144 0
26 V* IQ Per SB* 03 59 44.6764997640 +48 09 04.487282712   7.77 7.73     B9 162 0
27 HD 25833A SB* 04 06 55.8286148575 +33 26 46.929071509   6.83 6.87     ~ 264 0
28 HD 25833 ** 04 06 55.8351101323 +33 26 47.009585515       7.71   B3Vn 269 0
29 V* WW Cam SB* 04 31 25.2827050512 +64 21 45.496339164   10.61 10.09     A5 61 0
30 * 17 Aur SB* 05 18 18.8960529504 +33 46 02.516925540   6.102 6.144     B9V+B9.5V 308 0
31 SV* HV 12578 EB* 05 21 31.4679962808 -66 21 14.633639208   15.84 15.747 16.18 15.871 ~ 9 0
32 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
33 V* AS Cam SB* 05 29 46.9108852512 +69 29 45.363748704   8.59 8.60     A0 166 0
34 * del Ori ** 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 O9.5IINwk 796 0
35 V* GG Ori SB* 05 43 10.2226873248 -00 41 14.798359644   10.92       A2 79 0
36 HD 38735 SB* 05 47 26.8930346587 -10 31 58.690687745   6.23 6.09     A2IV 123 0
37 * bet Aur SB* 05 59 31.7229284 +44 56 50.757259 1.97 1.93 1.90 1.82 1.83 A1IV-Vp 433 1
38 V* FT Ori EB* 06 13 58.1528033520 +21 25 39.179938548   9.32 9.29     A0 95 0
39 V* WW Aur SB* 06 32 27.1847665440 +32 27 17.632429092   6.005 5.829     kA3hA3mF0+kA3hA3mF0 257 0
40 V* RU Mon SB* 06 54 12.3144510432 -07 35 45.031651440   10.64 10.51     B9pv 107 0
41 V* SW CMa SB* 07 08 15.2371235208 -22 26 25.248177960   9.32 9.16     A3IV 72 0
42 V* GZ CMa SB* 07 16 19.2051179904 -16 43 00.074716140   8.14 7.98     A0III/IV 73 0
43 V* CW CMa SB* 07 21 52.5358611288 -23 47 37.433447340   8.66 8.59     A0V 42 0
44 * 2 Pup B SB* 07 45 28.7368972272 -14 41 10.186320948   7.15 6.932     A0/1V 96 0
45 V* KX Pup EB* 07 52 00.5015440536 -26 22 39.529781760 13.39 13.20 12.82 12.60 12.38 A4 28 0
46 V* AO Vel EB* 08 11 53.9160599592 -48 44 46.003619076   9.36 9.37     BpSi+B8V+B9/A0+B9/A0 67 0
47 V* AI Hya EB* 08 18 47.4972221712 +00 17 00.612058128   9.77 9.35     F2m+F0V 119 0
48 HD 71487 SB* 08 26 17.7300667968 -39 03 32.258348136   6.43 6.49 7.44   B8V 74 0
49 V* V596 Pup SB* 08 27 33.2749537514 -20 50 38.246097199   6.63 6.59     A1V 123 1
50 V* EO Vel EB* 08 39 03.3129364992 -43 43 55.780678668   11.78 11.28     A0 24 0
51 * 9 Cha SB* 08 43 12.1984130688 -79 04 12.368512452   6.28 6.07     A7V 242 0
52 V* CV Vel SB* 09 00 37.9905129264 -51 33 20.066036652 5.88 6.55 6.69     B2V 158 0
53 V* PT Vel SB* 09 10 57.7198489968 -43 16 02.929344528   7.08 7.03     A0V 47 0
54 * 163 Car SB* 09 54 33.8842758792 -58 25 16.579713612 5.6 6.47 6.64     B2V 128 0
55 V* DW Car SB* 10 43 10.0815693384 -60 02 11.745452652 9.02 9.83 9.85 10.03 9.59 B1III 80 0
56 * chi02 Hya SB* 11 05 57.5699938080 -27 17 16.272708396   5.64 5.71     B8V 119 0
57 V* EM Car SB* 11 12 04.5060592584 -61 05 42.944560584 8.06 8.80 8.54 9.25   O7.5V((f))+O7.5V((f)) 172 0
58 V* GL Car EB* 11 14 39.8366304912 -60 39 36.364706856 9.09 10.02 9.74 9.86   B3:V 90 0
59 HD 99898 ** 11 28 51.9526341873 -62 55 51.734277991 9.04 9.860 9.620 9.707   B2/5(III) 54 0
60 V* KT Cen EB* 11 48 05.3465466480 -62 21 10.912462416   12.00     11.363 B8 28 0
61 * 65 UMa SB* 11 55 05.7460955088 +46 28 36.597092700   6.76 6.67     hA5VkA2mA3 150 0
62 V* EP Cru EB* 12 37 16.7487593592 -56 47 17.406515616   8.65 8.69     B5V 41 0
63 V* SZ Cen SB* 13 50 35.0928355776 -58 29 57.097515840   8.89 8.59     A6III 106 0
64 V* ZZ Boo SB* 13 56 09.5175677112 +25 55 07.352931000   7.158 6.781     F3V 166 0
65 V* GG Lup SB* 15 18 56.3746551072 -40 47 17.596548564   5.495 5.604 5.613   B7V 146 0
66 V* GM Nor EB* 15 51 57.9691198104 -55 21 48.247115184   11.14 10.68     A3 25 0
67 V* TV Nor EB* 16 04 09.2456061624 -51 32 40.102327896   9.28 9.06     ApEuCrSr 46 0
68 V* V760 Sco SB* 16 24 43.7182304928 -34 53 37.529154204   7.16 7.05     B4V 176 0
69 V* U Oph SB* 17 16 31.7137908168 +01 12 37.998551304   5.941 5.921     B3V 388 1
70 V* V624 Her SB* 17 44 17.2471919784 +14 24 36.246660912   6.398 6.194     A3m 163 0
71 V* V539 Ara SB* 17 50 28.3930000656 -53 36 44.664776352   5.60 5.71     B2/3Vnn 190 0
72 V* V906 Sco SB* 17 53 54.7731227 -34 45 09.785378   5.95 5.96     B9V+B9V 128 0
73 HD 163708 SB* 17 59 13.4703104784 -36 56 19.839700356   7.155 7.089 8.09   A3III 122 0
74 V* V2283 Sgr EB* 18 04 38.8085776392 -36 54 52.682824872   10.44 10.38     A0 32 0
75 * 11 Sgr Or* 18 09 17.6999100192 -23 59 18.231196056 6.65 7.45 7.31 8.36   O7V(n)z+B0:V: 146 2
76 V* V577 Oph SB* 18 16 45.8522902080 +06 54 18.235409868   11.52 11.19     A 52 0
77 V* V451 Oph SB* 18 29 14.0426779320 +10 53 31.429623012   7.95 7.91     A0IV 167 0
78 V* RX Her SB* 18 30 39.2600750472 +12 36 40.330018404   7.35 7.29     A0Vv 186 0
79 V* YY Sgr SB* 18 44 35.8393954416 -19 23 23.033743368   10.25 10.17     B8/9II 75 1
80 V* HS Her SB* 18 50 49.7705985120 +24 43 11.940783384 8.180 8.580 8.560     B6III 126 0
81 V* DI Her SB* 18 53 26.2399243224 +24 16 40.792648332   8.46 8.47     B5III 274 0
82 V* V1182 Aql SB* 18 55 23.1255094080 +09 20 48.087475944 8.73 9.10 8.64     O7V(n)((f))z+B 119 0
83 V* KP Aql SB* 19 02 29.9459260320 +15 48 01.091088324   9.81 9.39     A3 62 0
84 V* V805 Aql SB* 19 06 18.1995031128 -11 38 57.338921508   7.88 7.59     A3m 97 0
85 V* V526 Sgr SB* 19 08 15.0263666280 -31 20 54.928664664   9.96 9.82     A0V 70 0
86 V* V889 Aql EB* 19 18 49.8402950736 +16 15 00.449818524   8.77 8.58     A 59 1
87 BD+27 3441 SB* 19 35 53.1933535416 +28 16 44.244682968   9.72 9.57     A0 44 0
88 * sig Aql SB* 19 39 11.6423977488 +05 23 51.979984260 4.60 5.20 5.17     B3V 173 0
89 HD 331102 ** 19 42 29.4562680000 +31 19 40.138490748   10.38 10.44     A2 84 0
90 V* V1147 Cyg EB* 19 45 52.4573303232 +32 15 40.310909820     11.91     ~ 28 0
91 V* HO Tel SB* 19 51 58.9315901448 -46 51 42.433074756   8.59 8.31     A7III(m) 46 0
92 V* V453 Cyg SB* 20 06 34.9661707872 +35 44 26.269865844 7.83 8.52 8.40     B0.4IV+B0.7IV 215 0
93 V* DR Vul EB* 20 13 46.8508993704 +26 45 01.628896644   8.94 8.71     B8 89 0
94 V* V478 Cyg SB* 20 19 38.7476920032 +38 20 09.195280836   9.16 8.767     B0Vp 195 0
95 V* MY Cyg SB* 20 20 03.3892517592 +33 56 35.011784040   8.71 8.34     kA3hF1mF2(V) 147 0
96 V* Y Cyg SB* 20 52 03.5771840640 +34 39 27.486121104 6.31 7.23 7.32     O9.5IV+O9.5IV 382 0
97 V* OO Peg SB* 21 41 37.6990945104 +14 39 30.750983100 8.650 8.530 8.260     A2 32 0
98 V* SS Lac SB* 22 04 41.5514288040 +46 25 38.110644768   10.262 10.128 10.127   A2V+A2V 97 0
99 V* SY Cep V* 22 13 34.2096339648 +62 31 40.014078600   12.32 12.44     ~ 14 0
100 V* WX Cep SB* 22 31 15.7881709512 +63 31 21.554196312   9.38 9.00     A5V+A2V 112 0
101 V* CO Lac SB* 22 46 30.0011308824 +56 49 31.635247764   10.46 10.40     B9V 119 0
102 V* AH Cep SB* 22 47 52.9412851944 +65 03 43.795145556 6.53 7.10 6.88     B0.2V+B2V 227 0
103 V* V364 Lac SB* 22 52 14.8100362992 +38 44 44.634368292   8.54 8.36     A4m+A3m 101 0
104 V* NY Cep SB* 22 58 39.7987260456 +63 04 37.752984732 7.23 7.74 7.4     B5 160 0
105 HD 218066 Be* 23 04 02.2270838832 +63 23 48.722060508 7.50 7.97 7.6     B1.5Vn 290 0
106 V* PV Cas SB* 23 10 02.5750345872 +59 12 06.149248560   9.98 9.86     B6V 159 0
107 V* AR Cas SB* 23 30 01.9406369832 +58 32 56.112185112 4.18 4.760 4.886     B3V 222 0
108 V* AL Scl SB* 23 55 16.5873603912 -31 55 17.320846548 5.57 5.981 6.076     B5/8 123 0
109 V* V821 Cas SB* 23 58 49.1740046112 +53 40 19.813636128 8.440 8.370 8.260     A1V+A4V 49 0

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