2010MNRAS.405.1930L


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.30CET22:47:49

2010MNRAS.405.1930L - Mon. Not. R. Astron. Soc., 405, 1930-1939 (2010/July-1)

The most plausible explanation of the cyclic period changes in close binaries: the case of the RS CVn-type binary WW Dra.

LIAO W.-P. and QIAN S.-B.

Abstract (from CDS):

Cyclic period changes are a fairly common phenomenon in close binary systems and are usually explained as being caused either by the magnetic activity of one or both components or by the light travel time effect (LTTE) of a third body. We searched the orbital period changes in 182 EA-type (including the 101 Algol systems used by Hall), 43 EB-type and 53 EW-type binaries with known mass ratio and spectral type of the secondary component. We reproduced and improved the diagram in Hall according to the new collected data. Our plots do not support the conclusion derived by Hall that cyclic period changes are restricted to binaries having a secondary component with spectral type later than F5. The presence of period changes among systems with a secondary component of early type indicates that magnetic activity is one, but not the only, cause of the period variation. It is discovered that cyclic period changes, probably resulting from the presence of a third body, are more frequent in EW-type binaries among close systems. Therefore, the most plausible explanation of the cyclic period changes is the LTTE through the presence of a third body. Using the century-long historical record of the times of light minimum, we analysed the cyclic period change in the Algol binary WW Dra. It is found that the orbital period of the binary shows a ∼112.2-yr cyclic variation with an amplitude of ∼0.1977d. The cyclic oscillation can be attributed to the LTTE by means of a third body with a mass no less than 6.43M. However, no spectral lines of the third body were discovered, indicating that it may be a candidate black hole. The third body is orbiting the binary at a distance closer than 14.4 au and may play an important role in the evolution of this system.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): methods: statistical - binaries: close - binaries: eclipsing - stars: individual: WW Dra - stars: late-type

VizieR on-line data: <Available at CDS (J/MNRAS/405/1930): table1.dat table2.dat table3.dat table5.dat refs.dat>

Simbad objects: 280

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Number of rows : 280

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* TW And Al* 00 03 18.2272396096 +32 50 45.102092675   9.48 9.07     F0/2V 128 0
2 V* TV Cas Al* 00 19 18.7424190416 +59 08 20.541942509 7.27 7.29 7.22     B9V 263 0
3 V* ZZ Cas bL* 00 33 30.3827349166 +62 30 40.176283339   11.10 10.79     B3 67 0
4 V* RT Scl bL* 00 36 28.0901772641 -25 40 22.932335075   10.63 10.31     A5N+F3 59 0
5 * 21 Cas Al* 00 45 39.0741754240 +74 59 17.056290402   5.717 5.652     A2IV 202 0
6 V* V Tuc Al* 00 51 46.5986498229 -71 59 52.927451886   10.83 10.64     F9III 28 0
7 V* U Cep Al* 01 02 18.4416064122 +81 52 32.080928443   6.92 6.92     G2III:+B8/9 460 0
8 V* GG Cas Al* 01 16 12.9437697954 +56 19 42.815428463   10.70 10.031     B5 31 0
9 V* UV Psc EB* 01 16 55.1192705826 +06 48 42.131128899   9.73 9.01   8.223 G5(N) 242 0
10 V* AQ Cas Al* 01 19 10.3485542072 +62 23 48.387336876   10.84 10.31     A9 56 0
11 V* XX Cas Al* 01 29 34.6142658694 +60 58 04.706556434   9.73 9.57     B4Vn 35 0
12 V* MN Cas bL* 01 42 03.0391431467 +54 57 35.734035149   10.29 10.18     A0V 35 0
13 V* TW Cet EB* 01 48 54.1434549440 -20 53 34.595492634   11.25 10.61   9.787 G5+G8 85 0
14 V* BZ Cas Al* 01 53 42.5279519238 +62 57 35.083361566   11.74 11.30     A0 26 0
15 V* XZ And Al* 01 56 51.5242718974 +42 06 02.181304098   10.16 9.93     A4IV 122 0
16 V* AA Cet WU* 01 59 00.7222261987 -22 55 11.252800920   7.65 7.23 8.14   A7/8V+G 57 0
17 V* X Tri Al* 02 00 33.7370769677 +27 53 19.205078722   9.30 9.00 8.50   A7V 215 0
18 V* GZ And EB* 02 12 14.0685394783 +44 39 36.208412439   12.23 11.10     G5V 72 0
19 V* DM Per Al* 02 25 58.0077659596 +56 06 10.011871690   8.03 7.95     B5V+A: 116 1
20 V* AB Cas Al* 02 37 31.5113123367 +71 18 16.273650984   10.59 10.32     A3 144 0
21 V* RY Per Al* 02 45 42.1219997955 +48 08 37.892091380   8.69 8.63     B4+F5III 148 0
22 V* TW Cas Al* 02 45 54.8226328834 +65 43 35.048145039   8.48 8.38     A0V 118 0
23 V* RS Ari Al* 02 46 14.0666987418 +27 52 38.933423814   10.84 10.02     G0 25 0
24 V* SS Cet Al* 02 48 36.2797 +01 48 26.894           A1IV 38 0
25 V* RZ Cas Al* 02 48 55.5096536172 +69 38 03.441544807   6.40 6.26     A3V 440 0
26 V* XY Cet Al* 02 59 33.5322818773 +03 31 03.250934458   9.04 8.75     A8Vm+F0Vm 93 0
27 HD 18541 Al* 03 00 05.7094158688 +39 11 24.907845803   9.83 9.61 9.62   A3V+K1-2IV 129 0
28 V* RX Cas bL* 03 07 45.7481570255 +67 34 38.614798549   10.14 8.64     K1III+A5eIII 174 0
29 * bet Per EB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1154 2
30 V* UX Eri EB* 03 09 52.7437514915 -06 53 33.510267719   11.61 10.97     F9V 82 0
31 V* CC Cas bL* 03 14 05.3362562931 +59 33 48.488947721 7.07 7.56 7.08     O8.5III(n)((f)) 271 0
32 V* RT Per Al* 03 23 40.3989841994 +46 34 35.841240515   11.22 10.73     F5+G0 155 0
33 V* V1241 Tau Al* 03 24 23.2476767065 -00 42 14.927927423   9.87 9.49     A5III 57 1
34 V* AS Eri Al* 03 32 25.1262238528 -03 18 48.096045754   8.49 8.30     A1V 160 0
35 V* EQ Tau EB* 03 48 13.4354607957 +22 18 50.923195066   12.04 11.18     G1 110 0
36 * lam Tau Al* 04 00 40.8157175 +12 29 25.225937 2.66 3.29 3.41 3.44 3.53 B4IV 333 0
37 V* RW Tau Be* 04 03 54.3166595668 +28 07 33.498234545   8.130 8.08 8.76   B8Ve+K0IV 252 0
38 V* SZ Cam bL* 04 07 49.2860550827 +62 19 58.627126529 6.82 7.26 6.93     O9.5Vn 208 1
39 V* RV Per Al* 04 10 37.9975841868 +34 15 54.883069926   11.33 10.90     A2 46 0
40 V* YY Eri EB* 04 12 08.8494411846 -10 28 09.993813939   9.08 8.41   7.673 G3/K0+(F/G) 206 0
41 V* RW Per Al* 04 20 16.7639572675 +42 18 51.805627087   10.19 9.72     A2 128 0
42 V* TZ Eri Al* 04 21 40.3306286323 -06 01 09.201548751   9.97 9.61     A5 58 0
43 V* AO Cam EB* 04 28 13.6470237835 +53 02 44.465212969   11.23 10.51     G0V 89 0
44 V* IK Per bL* 04 29 27.4559757386 +42 03 10.588508212   12.17 11.49     A2 50 0
45 V* GW Tau bL* 04 30 09.4649813862 +25 32 26.956497538   11.59 10.86 10.420   A2 34 0
46 V* RZ Tau EB* 04 36 37.6612742555 +18 45 17.794204502   10.79 10.19     F5 133 0
47 V* AC Tau Al* 04 37 06.3566769743 +01 41 31.158002753   11.51 11.09     A8 31 0
48 V* HU Tau Al* 04 38 15.8302787509 +20 41 05.011148487   5.830 5.842     B8V 139 0
49 V* RZ Eri RS* 04 43 45.8303098729 -10 40 56.020152460   8.530 7.88     kA5mF5+G8IVe 171 0
50 V* BF Aur bL* 05 05 03.4997413541 +41 17 19.111314534   8.83 8.85     B5 75 0
51 V* RS Cep Al* 05 06 03.2047254984 +80 14 52.281392885   10.76 10.39     A5III+G8III 97 0
52 V* TT Aur bL* 05 09 42.2876514730 +39 35 10.736742938 8.65 8.668 8.602     B2Vn 129 0
53 HD 33357 Be* 05 11 42.9273627502 +42 09 55.278557789 7.67 8.55 8.55     B1:V:ne 174 0
54 V* IM Aur Al* 05 15 29.7433023295 +46 24 21.454919194   8.07 8.11     B7V 124 0
55 V* CD Tau Al* 05 17 31.1528698885 +20 07 54.627827550 7.27 7.25 6.76     A5:IapHIwk: 157 0
56 * 17 Aur Al* 05 18 18.8960029818 +33 46 02.520290896   6.102 6.144     B9V+B9.5V 287 0
57 V* IU Aur bL* 05 27 52.4053853877 +34 46 58.343520392 7.91 8.57 8.39     B3Vnne 170 0
58 HD 35921 bL* 05 29 42.65002 +35 22 30.0896 6.23 6.96 6.85     O9II 230 0
59 V* UX Men EB* 05 30 03.1866927465 -76 14 55.350072672   8.80 8.24   7.608 F8V 110 0
60 V* RS Lep Al* 05 59 18.4274239000 -20 13 25.122299556   9.94 9.88     A0V 35 0
61 * bet Aur Al* 05 59 31.7229284 +44 56 50.757259 1.97 1.93 1.90 1.82 1.83 A1IV-Vp 404 0
62 V* DN Ori Al* 06 00 28.3451631026 +10 13 04.996265242   9.40 9.15     A2e 71 0
63 V* RW Gem EB* 06 01 28.0582015770 +23 08 27.517677121   9.89 9.79     B6V 97 0
64 V* HL Aur bL* 06 19 13.0403812535 +49 42 06.942814755   11.59 11.08     F4 54 0
65 V* WW Aur Al* 06 32 27.1844547414 +32 27 17.633031158   6.005 5.829     ~ 239 0
66 V* SV Cam Al* 06 41 19.0820839974 +82 16 02.435978987       9.0   G2IV-V 348 0
67 V* RX Gem Al* 06 50 11.5419700316 +33 14 20.734054574   9.42 9.24     A0+K2 82 0
68 V* AF Gem EB* 06 50 39.6479385886 +21 21 55.959707220   11.05 10.82 10.64   A0 57 0
69 V* HS Aur Al* 06 51 18.4767847402 +47 40 24.176583816   10.85 10.05     G5(N) 83 0
70 HD 50846 Al* 06 54 54.7083961175 -01 22 32.849416553   8.46 8.43     B5/7Ib 136 0
71 V* AL Gem Al* 06 57 38.5568736367 +20 53 32.339750317   10.30 9.89     F6V 61 0
72 V* FZ CMa Al* 07 02 42.6144514495 -11 27 11.571990512 7.71 8.28 8.14     B2IVn 100 1
73 V* AO Mon Al* 07 06 36.3002058793 -04 37 24.505277598   9.65 9.72     B3+B5 64 1
74 V* SS Cam RS* 07 16 24.7383612742 +73 19 56.916338849   11.01 10.20     G1+F5e 105 0
75 V* R CMa Al* 07 19 28.1782479807 -16 23 42.900652548 6.09 6.05 5.70     F2III/IV 264 0
76 V* AR Mon RS* 07 20 48.4540808090 -05 15 35.799308532   9.84 8.79   7.608 G6IV 162 0
77 V* FS Mon Al* 07 24 42.3030424644 -05 09 14.553577665   10.07 9.68     F2 40 0
78 V* RY Gem Al* 07 27 24.1734420156 +15 39 34.698736995   8.88 8.68     A0V:e+K0II 135 0
79 V* BF CMi Al* 07 30 18.9333526120 +04 31 21.797821557   11.12 11.02 10.89   ~ 18 0
80 V* YY Gem BY* 07 34 37.4475372002 +31 52 10.181030942 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 822 0
81 V* Y Cam Al* 07 41 11.0044924697 +76 04 26.090361755   10.93 10.60     A9IV+K1IV 154 0
82 V* UZ Pup bL* 07 41 46.1146412270 -13 23 37.829393868   9.96 9.54     A5/7+A5/7 41 0
83 V* TU Mon Al* 07 53 19.7487311074 -03 02 31.137321033   9.21 9.24     B2-6Vn 82 0
84 V* FW Mon Al* 07 57 38.3576181354 -07 11 22.023536777   10.08 9.97     B5/7III 29 0
85 V* V Pup bL* 07 58 14.4391988 -49 14 41.680272 3.28 4.24 4.41     B1Vp+B2: 228 0
86 V* V635 Mon Al* 08 01 44.5021301 -08 35 35.337418   7.98 7.32     G8III+A2III/IV 55 0
87 V* YY CMi bL* 08 06 38.5584655695 +01 55 46.482141575   9.15 8.70     F3V 52 0
88 V* XZ Pup Al* 08 13 31.0553137297 -23 57 11.387528645   7.88 7.84     B9.5IV/V 54 0
89 V* WY Hya WU* 08 14 10.9391222246 +00 29 43.563870353   11.22 10.61     A5/7 36 0
90 V* FG Hya EB* 08 27 03.9413981176 +03 30 52.329514882   10.62 10.04   9.401 G0 173 0
91 V* VZ Hya Al* 08 31 41.4132669170 -06 19 07.562306697   9.48 9.06     F3/5V 103 0
92 V* TX Cnc EB* 08 40 01.7039481625 +18 59 59.422657649   10.71 9.97 9.88   G0-G1V 205 0
93 V* EU Hya Al* 08 42 03.5666456266 -06 43 49.399393926   10.71 10.26     F6(N) 34 0
94 V* S Cnc Al* 08 43 56.1366893706 +19 02 03.039551802   8.44 8.35     B9/A0V+K:III 178 0
95 V* AC Cnc EB* 08 44 27.1122164614 +12 52 31.996499274   13.80 14.15     K1-3V 124 0
96 V* AD Cnc EB* 08 46 20.1002033642 +10 20 07.363744039   13.80 13.06     K0V 83 0
97 Cl* NGC 2682 SAND 1282 EB* 08 51 37.8473687335 +11 50 57.092630015 13.964 13.89 13.333   12.634 F7V 144 0
98 V* TY Pyx RS* 08 59 42.7216317719 -27 48 58.694776546 7.82 7.56 6.87     G5V 246 0
99 V* UV Lyn EB* 09 03 24.1260387911 +38 05 54.597326087   10.23 9.56     G0 93 0
100 V* RX Hya Al* 09 05 41.1657625108 -08 15 39.727879187   9.78 9.56     A5III 92 0
101 V* EZ Hya EB* 09 26 41.0598329207 -13 45 06.408988323   11.39 10.56   9.842 G2 48 0
102 V* S Ant EB* 09 32 18.3865325173 -28 37 39.967890838   6.77 6.45     F3V 129 0
103 V* S Vel Al* 09 33 13.2033580571 -45 12 30.870601506   8.05 7.81     A5(m)A5-A8 76 0
104 V* Y Leo Al* 09 36 51.8058091054 +26 13 57.643190421   10.31 10.07     A3 122 0
105 V* VV UMa Al* 09 38 06.7194183867 +56 01 07.289041687   10.42 10.28 10.135   A2V 128 0
106 V* W UMa EB* 09 43 45.4704899627 +55 57 09.066718574   8.54 7.75     G2Vn 636 1
107 V* T LMi Al* 09 48 28.4654034135 +33 17 19.585403886   11.09 11.06 10.89   A0 73 0
108 V* XX Leo bL* 09 59 29.3405021011 +13 47 06.384590104   11.2 10.7     A8 27 0
109 V* XY Leo EB* 10 01 40.4149118298 +17 24 32.578710513   10.66 9.68   8.474 K0V 261 0
110 V* Y Sex WU* 10 02 47.9689716565 +01 05 40.183887562   10.38 9.95 9.875   F3/5V 100 0
111 V* HS Hya Al* 10 24 36.7671181066 -19 05 32.957289219   8.53 8.12     F5V 106 0
112 V* UV Leo EB* 10 38 20.7689543921 +14 16 03.664614856   9.62 8.92 9.188 8.194 G0V(N) 255 0
113 V* RW Leo EB* 10 39 38.5209226184 +08 59 40.122833845   12.34 12.97 12.73   F4 31 0
114 HD 93206 bL* 10 44 22.9117286732 -59 59 35.978252992 5.53 6.37 6.24 7.42   O9.7Ibn 195 0
115 V* TX UMa Al* 10 45 20.5033114027 +45 33 58.703967287   6.99 6.98     B8V+G0III-IV 274 0
116 V* AC Vel bL* 10 46 18.3781838907 -56 49 45.818051053   9.04 9.00     B3III/V 21 0
117 V* AM Leo EB* 11 02 10.8845725849 +09 53 42.658542812   9.86 9.33   8.417 F8Vn 179 0
118 V* AP Leo EB* 11 05 05.0210506008 +05 09 06.407478312   10.07 9.57   8.849 F8V 112 0
119 V* BM UMa EB* 11 11 20.4771435569 +46 25 47.237595074     14.03 14.02   K0V 55 0
120 V* TT Hya Al* 11 13 12.4975968306 -26 27 54.251048400   7.43 7.31     F0IV:kA2mA3:_sh 175 0
121 V* TU Mus bL* 11 31 10.9242217305 -65 44 32.098796901 7.58 9.52 9.34 9.25   O8V(n)z+B0V(n) 153 0
122 V* BH Cen bL* 11 39 10.1856165413 -63 25 15.089500639 9.74 10.43 10.13 10.45   B5 77 0
123 V* TV Mus WU* 11 39 57.7650431238 -64 48 59.218089690   11.48 10.75   9.712 F2 63 0
124 V* RW UMa RS* 11 40 46.3524713336 +51 59 53.419318092   10.77 10.22     F8 114 0
125 V* Z Dra Al* 11 45 29.2100442996 +72 14 58.332487233   11.11 10.67     A5V 141 0
126 V* SV Cen EB* 11 47 57.2195336815 -60 33 57.757259516 7.98 9.71 9.70 9.46 8.810 B1/3 134 0
127 V* AG Vir WU* 12 01 03.5038236924 +13 00 30.018273805   8.78 8.52     A7V 153 0
128 HD 106400 EB* 12 14 20.99618 +11 49 09.3870   9.94 9.22 9.37 8.390 G8V 217 0
129 V* RW Com EB* 12 33 00.2841958714 +26 42 58.362399221   12.33 11.682 10.929   G8e 145 0
130 V* RZ Com EB* 12 35 05.0595716847 +23 20 14.030368274   11.09 10.57     G0Vn 178 0
131 V* RV Crv bL* 12 37 40.7106798062 -19 34 40.034437690   9.13 8.76     F0V 60 0
132 BD-07 3477 HS* 12 44 20.2386520980 -08 40 16.848587212   10.46 10.594 10.895   sdB2VIIHe3 252 1
133 V* EK Com EB* 12 51 21.4424870663 +27 13 46.999661678   13.00 12.166 12.175   K0V 58 0
134 V* UX Com RS* 13 01 33.0178454449 +28 37 54.177676774   10.86 10.01 8.15   B7+K0III 84 0
135 V* BI CVn EB* 13 03 16.4093211549 +36 37 00.645296050   10.99 10.31     F9V 81 0
136 V* RS CVn RS* 13 10 36.9078781154 +35 56 05.587686902 8.57 8.51 7.93 7.7   F6IV+G8IV 686 0
137 V* UW Vir Al* 13 15 20.7356374680 -17 28 16.924256898   9.36 9.13     A8IV/V 67 0
138 V* V814 Cen EB* 13 27 44.0322297567 -47 26 09.712309669 14.505 14.271 14.295 13.991 13.838 K2.5 32 0
139 V* V701 Cen bL* 13 31 37.67379 -51 46 17.7458   9.14       A0V+F? 30 1
140 V* RU UMi EB* 13 38 56.8159201076 +69 48 11.169368678   10.39 10.040     A2 87 0
141 V* RV CVn EB* 13 40 18.1619295118 +28 18 21.543001766   15.02 13.84 13.57   F8 32 0
142 V* BF Vir bL* 13 47 52.5952124063 -00 35 40.697811132   10.27 10.2     A1IV 58 0
143 V* SZ Cen Al* 13 50 35.0927038963 -58 29 57.099764696   8.89 8.59     A6III 97 0
144 V* DL Vir Al* 13 52 38.8116520680 -18 42 32.517360285   7.61 6.99     A2V+F6:III 93 1
145 V* V758 Cen EB* 13 52 42.9334251762 -55 32 27.792302766   9.72 9.68     B9IV 35 0
146 V* ZZ Boo Al* 13 56 09.5178151997 +25 55 07.354689717   7.158 6.781     F3V 152 0
147 V* BH Vir RS* 13 58 24.8603932736 -01 39 38.953813515   10.29 9.68   9.047 F6/8V 190 0
148 V* DM Vir Al* 14 07 52.4285219533 -11 09 07.476503346   9.25 8.79     F5V 91 0
149 V* RR Cen EB* 14 16 57.2205732062 -57 51 15.655885175 7.70 7.65 7.29     A9/F0V 135 0
150 V* SU Boo EB* 14 29 20.9696002381 +32 08 03.803975337   12.04 11.865 12.180   A4V 46 0
151 V* GR Vir EB* 14 45 20.2633088053 -06 44 04.130465519   8.54 8.00   7.34 G2/3V 123 0
152 * del Lib Al* 15 00 58.3457837926 -08 31 08.246917426 4.82 4.93 4.93 4.85 4.84 A0V 281 0
153 * i Boo EB* 15 03 47.29565 +47 39 14.6228           G0Vn 525 0
154 V* BW Dra WU* 15 11 50.0992475613 +61 51 41.230539303   9.39   8.3   B0 119 2
155 V* BV Dra WU* 15 11 50.3595172449 +61 51 25.282913496   8.54   7.7   F9V+F8V 145 2
156 V* SS Boo RS* 15 13 32.5313815658 +38 34 05.557651289   10.95 10.19     G8V 131 0
157 V* U CrB Al* 15 18 11.3525714546 +31 38 49.412035589   7.79 7.83     B6V 250 0
158 V* VZ Lib EB* 15 31 51.7489607517 -15 41 10.187285001   11.04 10.27     F5 57 0
159 HD 139319 ** 15 33 51.05705 +63 54 25.6950           ~ 234 0
160 HD 139319A SB* 15 33 51.0598928122 +63 54 25.706692279   7.75 7.46     A5m 239 0
161 V* RT CrB RS* 15 38 03.0317560540 +29 29 13.959880396   10.97 10.22     G0 89 0
162 V* AS Ser EB* 15 38 49.0208398942 +02 15 30.211602563   12.17 11.39 11.49   F2 22 0
163 V* RW CrB Al* 15 39 15.2334460158 +29 37 19.615261861   10.67 10.22     A8Vv(N) 113 0
164 V* W UMi Al* 16 08 27.2727942531 +86 11 59.551056069   8.92 8.65     A2V 109 0
165 V* CM Dra BY* 16 34 20.3299130309 +57 09 44.365524588   14.50 12.87 10.85 9.26 M4.5V 406 0
166 V* V899 Her EB* 16 35 01.9571762585 +33 12 47.770434591   8.33 7.88     F8 48 0
167 V* WW Dra RS* 16 39 03.9798563875 +60 41 58.777764456   9.34 8.61     G5Vn 181 0
168 V* V502 Oph EB* 16 41 20.8609964438 +00 30 27.383882425   9.15 8.50   7.865 G2V+F9V 176 0
169 V* V1010 Oph bL* 16 49 27.6691070212 -15 40 04.682104216   6.40 6.19     A3V 143 0
170 V* AI Dra Al* 16 56 18.1529784032 +52 41 54.349600598   7.18 7.13     A0V 172 0
171 V* UU Oph Al* 16 57 22.6406171761 -25 47 58.563465917   10.58 10.44     A1IV 52 0
172 V* RT UMi Al* 17 04 05.6011618192 +80 19 44.998203416   11.14 10.89     F0 23 0
173 V* WZ Oph Al* 17 06 39.0448308226 +07 46 57.800270428   9.66 9.12     F8 115 0
174 V* AK Her EB* 17 13 57.8235712254 +16 21 00.617382214   9.04 8.51   7.874 F8Vv 247 0
175 V* U Oph Al* 17 16 31.7132736201 +01 12 37.996480495   5.941 5.921     B3V 367 1
176 V* TX Her Al* 17 18 36.4458928433 +41 53 17.102359797   8.38 8.12     kA5mA8/F0 172 0
177 V* V819 Her Al* 17 21 43.6153979332 +39 58 28.658827060   6.222 5.561     F7V 167 0
178 V* V701 Sco WU* 17 34 24.5123986407 -32 30 15.986162640   9.08 8.97     B5 106 0
179 V* RV Oph Al* 17 34 34.9475480152 +07 14 49.208255600   9.89 9.66     A2/3V 61 0
180 V* SZ Her Al* 17 39 36.8074737663 +32 56 46.752971578   10.40 10.05 10.213   F0Vv 119 0
181 V* V743 Sgr WU* 17 43 56.0996885411 -28 29 51.671907033           G8-K0 19 0
182 * mu.01 Her ** 17 46 27.5266778 +27 43 14.437984 4.56 4.17 3.42 2.89 2.51 G5IV 654 0
183 V* V338 Her Al* 17 53 12.7355998894 +43 46 23.168281956   10.47 10.20     F2V 61 0
184 V* UX Her Al* 17 54 07.8540731444 +16 56 37.842560109   9.12 8.97     A0V 117 0
185 V* V566 Oph WU* 17 56 52.4104254187 +04 59 15.324800914   8.03 7.58     F5V 240 0
186 V* MM Her RS* 17 58 38.5192261661 +22 08 46.786202620   9.24 9.563 8.01 8.574 G0 129 0
187 V* DQ Her No* 18 07 30.2510755201 +45 51 32.564649735   12.99 15.16 11.46   M3+Ve 966 1
188 V* PW Her RS* 18 10 24.1114372953 +33 24 11.199929658   11.04 10.13 8.31   K0IV-V 65 0
189 V* RS Sgr Al* 18 17 36.2448638107 -34 06 26.155122298 5.45 5.94 6.03     B3/4IV/V 106 0
190 V* TZ CrA Al* 18 18 48.2156910076 -43 21 37.107895275   10.32 10.14     A1III/IV 32 0
191 V* XZ Sgr Al* 18 22 06.7704634239 -25 14 23.840994391   9.29 8.94     A2/3(IV) 81 0
192 V* RY Sct Be* 18 25 31.4772031860 -12 41 24.196044092 10.25 10.38 9.12 9.46   O9.7Ibep 286 1
193 V* AW Her RS* 18 25 38.7221269349 +18 17 40.207883327   10.52 9.69 7.94 8.537 G0 79 0
194 V* EG Ser Al* 18 26 02.1986202807 -01 40 51.349447275   8.41 8.24     A0IV/V 44 0
195 V* RZ Sct Al* 18 26 33.5234774335 -09 12 05.988849324 8.09 8.24 7.53     B2/3Ib/II 161 0
196 V* RX Her Al* 18 30 39.2602554603 +12 36 40.324578754   7.35 7.29     A0Vv 176 0
197 V* EW Lyr Al* 18 33 15.6138639071 +37 45 12.868945933   11.83 11.65 12.014   F0 43 0
198 V* RR Dra Al* 18 41 47.4012704566 +62 40 34.944133995   10.013 9.831     A2 64 0
199 V* KO Aql Al* 18 47 10.7414847866 +10 45 49.248230525   8.51 8.40     A0V 108 0
200 HD 349425 Al* 18 50 00.3000285255 +20 43 16.509748939   10.08 9.72 9.77   A5 66 0
201 * bet Lyr EB* 18 50 04.7952472 +33 21 45.609978 2.85 3.42 3.42 3.31 3.29 B8.5Ib-II 890 0
202 V* V803 Aql EB* 19 00 44.1854268626 -07 28 53.972949617           ~ 33 0
203 V* V337 Aql bL* 19 04 10.1937458004 -02 01 47.062901501 8.58 9.315 8.890 9.51   B0.5V 63 0
204 V* V805 Aql Al* 19 06 18.1993407183 -11 38 57.339316517   7.88 7.59     A3m 89 0
205 V* FL Lyr EB* 19 12 04.8626931872 +46 19 26.866598156   9.91 9.36     F8V 193 0
206 V* V342 Aql EB* 19 17 03.4768330101 +09 20 38.546517594   9.00 8.68   6.565 A4II 49 0
207 V* RS Vul Al* 19 17 39.9925694084 +22 26 28.358153731   6.91 6.85     B2-5V-IV 170 0
208 * U Sge Al* 19 18 48.4083830662 +19 36 37.720011635 6.23 6.61 6.58     B7III+K1III 363 0
209 V* Z Vul Al* 19 21 39.1060131049 +25 34 29.438979012 6.96 7.40 7.33     B3/5+A3IV? 199 0
210 V* V865 Cyg WU* 19 27 24.8221534342 +33 03 09.474682095           ~ 26 0
211 V* TT Lyr Al* 19 27 36.3131941431 +41 42 05.528076290   11.10 10.88     B2V 46 0
212 V* V417 Aql EB* 19 35 24.1195541620 +05 50 17.659050699   11.23 10.63     G0V+F9V 112 0
213 LF 2 +28 153 Al* 19 35 53.1935975899 +28 16 44.265765596   9.72 9.57     A0 41 0
214 V* V505 Sgr Al* 19 53 06.3822777147 -14 36 11.478076816   6.62 6.48     A2IV-V 201 0
215 V* BS Dra Al* 19 56 28.7704782049 +73 36 57.518195948   9.58 9.14     F5 78 0
216 V* BO Vul Al* 19 56 29.0711863438 +23 54 45.011830604   10.45 10.12     F0 36 0
217 V* V548 Cyg bL* 19 56 58.3060910805 +54 47 58.280580154   8.71 8.61     A1V 96 0
218 V* WW Cyg Al* 20 04 02.7111846702 +41 35 16.462678290   10.163 10.10   9.875 B8k:+G? 105 0
219 V* V448 Cyg bL* 20 06 09.9485954895 +35 23 09.614693894 7.89 8.45 8.16     O9.5V+B1Ib 143 0
220 V* SW Cyg Al* 20 06 57.9310468060 +46 17 58.147253224   9.57 9.35     A2 153 0
221 V* KR Cyg bL* 20 09 05.5961020272 +30 33 01.374018589   9.50 9.34     A0 80 0
222 V* QY Aql Al* 20 09 28.8293497548 +15 18 44.718941939   11.73 11.40 11.89   F0 63 0
223 HD 191515 Al* 20 09 59.5683042343 +10 20 59.010894808   9.14 9.14     A0V 96 0
224 V* UZ Sge Al* 20 12 16.2310996057 +19 20 55.393927653           A0 35 0
225 V* KU Cyg Al* 20 12 45.1081733782 +47 23 41.370993244   11.70 11.04     F4Iae+M0III 84 0
226 V* VW Cyg Al* 20 15 12.2846922130 +34 30 48.319560295   10.58 10.27     A3 75 0
227 V* EG Cep EB* 20 15 56.8243910118 +76 48 35.764648017   9.75 9.49     A7V 118 0
228 V* RW Cap Al* 20 17 56.0706312841 -17 40 23.375993983   10.56 10.30     A1III/IV 31 0
229 V* V382 Cyg bL* 20 18 47.2203014045 +36 20 26.091543194 9.35 9.19 8.65     O6IVn+O5Vn 174 0
230 V* UW Cyg Al* 20 23 02.8402519709 +43 14 32.482737638   11.09 10.86     A5(N) 44 0
231 V* ZZ Cyg Al* 20 23 52.9068858704 +46 55 14.534183852   11.56 10.98     F7: 93 0
232 V* TY Cap Al* 20 24 29.6874504139 -12 57 55.364981741   10.580 10.356     A5III 30 0
233 V* BE Vul Al* 20 25 33.6370490858 +27 22 09.098319958   9.92 9.79     A0 55 0
234 BD+40 4220 EB* 20 32 22.4241357648 +41 18 18.942382590 11.32 10.79 9.185     O6.5-7f+O5.5-6f 372 0
235 V* AY Vul Al* 20 35 38.8869869190 +22 37 27.076055306   11.90 11.52     F0 27 0
236 V* TT Del Al* 20 36 02.3470502096 +08 27 03.123015948   11.82 11.58 11.46   A1 31 0
237 V* GO Cyg bL* 20 37 20.1282846896 +35 26 10.290541847   8.64 8.62     A0V 109 0
238 V* VW Cep EB* 20 37 21.6248469581 +75 36 01.889162699   8.13   7.0   G8V+K0V 526 0
239 V* W Del Al* 20 37 40.0857987034 +18 17 03.752794100   9.89 9.81     A0 141 0
240 V* S Equ Al* 20 57 12.8404519070 +05 04 49.422864634   8.43 8.37     B8/9IV/V 121 1
241 HD 200391 Ae* 21 02 25.9068825509 +27 48 26.439773330   7.93 7.374   6.624 G0V+G5V 340 0
242 V* TY Del Al* 21 04 21.9802265024 +13 12 53.553552826   10.27 10.08 10.144   A0 51 0
243 HD 203069 Al* 21 20 16.0200764001 -10 48 08.125320777   9.258 8.874     A7V 75 0
244 V* EI Cep Al* 21 28 28.2054637198 +76 24 12.583727867   7.94 7.61     F3V+F1m 122 0
245 V* GK Cep bL* 21 30 59.1547492504 +70 49 23.626786254   7.08 7.00     A0V 79 0
246 V* AQ Peg Al* 21 37 20.9053669895 +13 28 28.496349129   10.57 10.47     A7: 70 0
247 V* EE Peg Al* 21 40 01.8784962647 +09 11 05.116891931   7.09 6.98     A1III 162 0
248 V* AW Peg Al* 21 52 20.6906609358 +24 00 44.326653451   7.99 7.65     A3III 96 0
249 HD 208392 Be* 21 53 48.0971722883 +62 36 51.899417888 6.74 7.20 7.03     B1Vn 153 0
250 V* DK Cep Al* 21 58 34.1848742194 +60 57 01.780587493   12.32 11.93     ~ 31 0
251 V* MR Cyg Al* 21 58 56.5896057253 +47 58 59.998507667   8.89 8.91     B3V 119 0
252 V* UZ Cyg Al* 21 59 14.3302963516 +44 21 34.753217950   10.66 10.24     A3 40 0
253 V* CM Lac Al* 22 00 04.4502413302 +44 33 07.733687353   8.40 8.21     A3m 155 0
254 V* RT Lac RS* 22 01 30.7407751260 +43 53 25.640188873   10.092 8.84     G9+K1IVIV 264 0
255 V* AR Lac RS* 22 08 40.8180372773 +45 44 32.104045703 7.09 6.83 6.11     K0IVe+G5IV 697 0
256 V* AT Peg Al* 22 13 23.5167248011 +08 25 30.852347587   9.21 9.02     A6IV 111 0
257 V* TW Lac Al* 22 30 26.2638056185 +54 37 06.445211740   11.90 11.85     A2 44 1
258 V* WX Cep Al* 22 31 15.7898100011 +63 31 21.553531992   9.38 9.00     A5V+A2V 98 0
259 HD 214419 WR* 22 36 53.9549498582 +56 54 20.985957352 8.68 9.21 8.80     WN6o+O9Ib/II 364 1
260 V* VX Lac Al* 22 41 00.5642487757 +38 19 19.999539085   10.87 10.51     F0(N) 60 0
261 HD 215661 ** 22 45 02.61048 +68 07 58.3879           ~ 93 0
262 V* ZZ Cep Al* 22 45 02.6136026745 +68 07 58.468275839   9.29 9.05 9.12   B7+F0V 94 0
263 V* AH Cep bL* 22 47 52.9411821102 +65 03 43.797787196 6.53 7.10 6.88     B0.2V+B2V 206 0
264 V* SW Lac WU* 22 53 41.6541327083 +37 56 18.604271966   9.65 8.51     K0Vv 352 0
265 V* GT Cep Al* 22 57 47.3130620664 +68 24 26.029233523   8.49 8.25     B5II 62 0
266 V* CR Cas bL* 23 04 52.0262570627 +59 33 56.712593029 11.95 11.80 11.70     K8 25 0
267 V* IR Cas bL* 23 06 52.3741697923 +54 04 52.228539731   11.75 11.14     F4: 54 0
268 V* AB And EB* 23 11 32.0860884375 +36 53 35.107206154   10.62 9.50     G5+G5V 254 0
269 V* TT And Al* 23 13 22.9024191646 +46 08 51.079240598   11.78 11.36     A0: 29 0
270 V* SZ Psc RS* 23 13 23.7750023418 +02 40 31.587196900   8.19 7.44   6.390 G5Vp 304 1
271 V* X Gru Al* 23 19 42.3634730518 -55 36 41.485820185   10.726 10.616 10.54   A1V 31 0
272 V* DI Peg Al* 23 32 14.6735672777 +14 58 08.750442842   10.00 9.513     F0IVn 138 0
273 V* Y Psc Al* 23 34 25.3848119966 +07 55 28.524974048   9.62 9.40     A3V+K0 99 0
274 V* AD And bL* 23 36 45.0065676368 +48 40 15.573275531   11.34 11.14     A0V 59 0
275 V* XX Cep Al* 23 38 20.2850415119 +64 20 02.699227113   9.47 9.18     A7V 152 0
276 V* BK Peg Al* 23 47 08.4666003233 +26 33 59.968086314   10.46 10.04     F8 69 0
277 * sig Phe * 23 47 15.9970144927 -50 13 35.252950570   5.000 5.166     B3V 58 0
278 V* IV Cas Al* 23 49 31.5278453652 +53 08 04.642268488   11.61 11.34     A2 44 0
279 V* XY Cep Al* 23 52 32.9295299120 +68 56 01.643607261   10.43 9.94     B8 48 0
280 V* U Peg EB* 23 57 58.4767547238 +15 57 10.083936262   10.26 9.63   8.970 G2V 236 0

    Equat.    Gal    SGal    Ecl

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2020.11.30-22:47:49

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