2014ApJS..213...34K


Query : 2014ApJS..213...34K

2014ApJS..213...34K - Astrophys. J., Suppl. Ser., 213, 34 (2014/August-0)

Toward complete statistics of massive binary stars: penultimate results from the Cygnus OB2 radial velocity survey.

KOBULNICKY H.A., KIMINKI D.C., LUNDQUIST M.J., BURKE J., CHAPMAN J., KELLER E., LESTER K., ROLEN E.K., TOPEL E., BHATTACHARJEE A., SMULLEN R.A., VARGAS ALVAREZ C.A., RUNNOE J.C., DALE D.A. and BROTHERTON M.M.

Abstract (from CDS):

We analyze orbital solutions for 48 massive multiple-star systems in the Cygnus OB2 association, 23 of which are newly presented here, to find that the observed distribution of orbital periods is approximately uniform in log P for P < 45 days, but it is not scale-free. Inflections in the cumulative distribution near 6 days, 14 days, and 45 days suggest key physical scales of ≃0.2, ≃0.4, and ≃1 A.U. where yet-to-be-identified phenomena create distinct features. No single power law provides a statistically compelling prescription, but if features are ignored, a power law with exponent β ≃ -0.22 provides a crude approximation over P = 1.4-2000 days, as does a piece-wise linear function with a break near 45 days. The cumulative period distribution flattens at P > 45 days, even after correction for completeness, indicating either a lower binary fraction or a shift toward low-mass companions. A high degree of similarity (91% likelihood) between the Cyg OB2 period distribution and that of other surveys suggests that the binary properties at P ≲ 25 days are determined by local physics of disk/clump fragmentation and are relatively insensitive to environmental and evolutionary factors. Fully 30% of the unbiased parent sample is a binary with period P < 45 days. Completeness corrections imply a binary fraction near 55% for P < 5000 days. The observed distribution of mass ratios 0.2 < q < 1 is consistent with uniform, while the observed distribution of eccentricities 0.1 < e < 0.6 is consistent with uniform plus an excess of e ≃ 0 systems. We identify six stars, all supergiants, that exhibit aperiodic velocity variations of ∼30 km/s attributed to atmospheric fluctuations.

Abstract Copyright:

Journal keyword(s): binaries: close - binaries: general - binaries: spectroscopic - stars: early-type - stars: kinematics and dynamics - stars: massive - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/ApJS/213/34): table1.dat table7.dat table8.dat table9.dat apvar.dat>

Simbad objects: 96

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Number of rows : 96
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16252 1
2 [CPR2002] A45 SB* 20 29 46.6721589624 +41 05 08.338345224           B0.5V+B1V:-B2V: 16 0
3 [CPR2002] B17 s*b 20 30 27.3018237840 +41 13 25.130220744     13.053     O6Iaf+O9Ia 30 0
4 GSC 03161-01264 * 20 30 39.8050574280 +41 36 50.632151976 15.11 14.57 12.93     O6.5V 22 0
5 RLP 1520 SB* 20 30 50.7333660192 +41 35 06.639049932 15.23 15.04 13.74     B1.5V+B+? 15 0
6 GSC 03161-01224 * 20 30 51.1144819416 +41 20 21.764885280 17.28 16.66 14.48     B0V 14 0
7 Schulte 1 SB* 20 31 10.544472 +41 31 53.52024 12.82 12.69 11.09 10.57   O8V+B 61 0
8 RLP 1592 SB* 20 31 18.3295427976 +41 21 21.703264884 15.88 15.09 12.99     O9III+ 24 0
9 Schulte 2 V* 20 31 22.0268518920 +41 31 28.365740076 12.01 11.82 10.64     B1Ib: 60 0
10 RLP 582 SB* 20 31 33.3769187472 +41 22 49.014033456 16.52 15.81 13.81     B1V+B2V: 18 0
11 BD+40 4212 SB* 20 31 37.5053189952 +41 13 21.001757520 12.46 11.5 10.214     O6IV:+O9III 73 1
12 RLP 593 * 20 31 45.3998073432 +41 18 26.728678620 14.91 14.25 12.26     O8V 26 0
13 Schulte 20 SB* 20 31 49.6575031512 +41 28 26.510600388 12.67 12.63 11.52     O9III+B 42 0
14 [MT91] 170 * 20 31 56.23 +41 35 12.3   16.26 15.21     B5:V 5 0
15 RLP 210 SB* 20 31 56.9461566120 +41 31 47.764616124 13.99 13.76 12.55     B2III+G-B 19 0
16 2MASS J20320311+4132302 * 20 32 03.1061515488 +41 32 30.239553552   15.34 14.14     B2Ve 8 0
17 RLP 545 SB* 20 32 03.7666533504 +41 25 10.443609084 15.15 14.76 13.24     B0.5V 18 0
18 2MASS J20320465+4127483 * 20 32 04.6475605320 +41 27 48.308287284   15.94 14.77     B6:V 3 0
19 2MASS J20320565+4127489 * 20 32 05.6483352216 +41 27 48.964755204   16.12 14.81     B6V 7 0
20 RLP 615 SB* 20 32 07.9695369168 +41 21 59.849287740   15.81 14.46     B2V+A-B 10 0
21 [MT91] 213 Be* 20 32 13.1247390384 +41 27 24.346666440 13.12 13.08 11.266     B0Vp 251 0
22 BD+40 4219 * 20 32 13.8219154968 +41 27 12.006516060 11.50 11.40 10.22     O7III((f)) 107 0
23 2MASS J20321504+4119303 * 20 32 15.0387020568 +41 19 30.424269828   16.29 14.9     B3V 9 0
24 Schulte 14 Em* 20 32 16.5622071096 +41 25 35.670679176 12.84 12.27 11.47     O9V 42 0
25 RLP 619 SB* 20 32 19.6472111832 +41 20 38.899179780 14.79 14.53 13.25     B1.5V+B 13 0
26 GSC 03161-01215 * 20 32 20.6261209704 +41 21 08.344738980   13.4 12.75     ~ 4 0
27 GSC 03161-01342 * 20 32 21.7501948560 +41 34 25.027112892   15.47 14.33     B4V 8 0
28 RLP 530 SB* 20 32 22.1197789656 +41 27 42.085617228   14.58 13.88     B1.5V+B 10 0
29 BD+40 4220 SB* 20 32 22.4238075360 +41 18 18.942475932 11.32 10.79 9.185     O7Ianfp+Ofpe/WN9 384 0
30 RLP 631 SB* 20 32 26.5055734776 +41 19 13.836357012 16.11 15.7 14.15     B2III+B1V 18 0
31 Schulte 15 SB* 20 32 27.6544131144 +41 26 22.073616744 12.39 12.30 11.10     O8V+B 49 0
32 Schulte 21 * 20 32 27.7375852104 +41 28 52.248099612 12.39 12.01 11.30 11.05   B0Ib 43 0
33 RLP 497 SB* 20 32 31.4083592352 +41 30 51.602419368   15.81 14.38     B2.5V 9 0
34 RLP 887 SB* 20 32 31.5335925286 +41 14 08.189588225   15.44 13.00 12.15   O7.5III-I+O/B 17 0
35 2MASS J20323233+4122578 * 20 32 32.3197776144 +41 22 57.794705436   16.17 14.68     B4V 10 0
36 ALS 15186 * 20 32 32.5377656160 +41 26 46.815246960 16.82 16.48 14.91     B5:V 8 0
37 RLP 492 SB* 20 32 37.0177286328 +41 23 05.186805072 15.01 14.59 13.08     B2V+B-F 20 0
38 RLP 494 SB* 20 32 37.7595818832 +41 26 15.394216992 15.18 14.92 13.71     B1.5V+G-B 16 0
39 Schulte 16 * 20 32 38.5694704320 +41 25 13.776724056 12.05 11.88 11.12     O7.5IV(n) 46 0
40 RLP 644 SB* 20 32 42.8884391784 +41 20 16.477275012   15.26 13.87     B2V+B3V 17 0
41 BD+40 4221 * 20 32 45.4494231552 +41 25 37.543209348 12.06 11.93 10.68     O8.5V(n) 56 0
42 [MT91] 336 SB* 20 32 49.6802921976 +41 25 36.457180680   15.3 14.13     B2V+B-M 11 0
43 Schulte 17 SB* 20 32 50.0160775512 +41 23 44.684507976 13.15 12.43 11.33     O8V+O-G 41 0
44 RLP 994 SB* 20 32 58.9203050976 +41 04 30.012303288 18.01 17.14 14.958     B0V+B2:V 22 0
45 GSC 03161-01218 * 20 32 59.1773346576 +41 24 25.491471588 13.47 13.26 11.91     O8V 30 0
46 Schulte 41 SB* 20 32 59.6317342392 +41 15 14.679727632 16.54 15.59 13.49     O9.7III(n) 30 0
47 RLP 666 SB* 20 33 02.9131259304 +41 17 43.161301572 15.67 15.06 12.94 12.18   O8V+G-O 31 0
48 RLP 107 SB* 20 33 05.2620969456 +41 43 36.748888104 14.9 14.43 12.94     B1V+B 22 0
49 Schulte 22A * 20 33 08.7655811880 +41 13 18.702872112           O3If* 18 0
50 Schulte 22 SB* 20 33 08.799 +41 13 18.21 14.33 13.59 11.55     O3If*+O6V((f)) 69 0
51 Schulte 22B SB* 20 33 08.8427353416 +41 13 17.413536036           O6V+A-O 17 0
52 Schulte 50 SB* 20 33 09.60288 +41 13 00.5520 15.52 14.82 12.86 12.32   O9V+B9V-A0V 32 1
53 ALS 15190 * 20 33 10.2850243200 +41 23 44.600309880 16.67 16.36 14.97     B4II-III 12 0
54 RLP 678 EB* 20 33 10.5041613984 +41 22 22.405661292 14.97 14.54 12.958     B0V+(B3V+B6V) 37 0
55 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O5I+O4III 216 0
56 2MASS J20331182+4124054 * 20 33 11.8143520176 +41 24 05.411799324   15.6 14.12     B5V 8 0
57 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 881 0
58 RLP 853 SB* 20 33 13.2612575376 +41 13 28.656230412 16.63 15.76 13.61     O6V+A-O 33 0
59 2MASS J20331336+4126397 * 20 33 13.3579462512 +41 26 39.674315220   15.59 14.45     B5:V 12 0
60 GSC 03157-00872 * 20 33 13.6906302984 +41 13 05.770090668 15.27 14.73 12.92     O8V 30 0
61 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 138 0
62 ALS 15175 * 20 33 14.3372675616 +41 19 33.126329208 17.15 16.46 14.67     B5: 12 0
63 BD+40 4227B * 20 33 14.7561575856 +41 18 41.750437968 11.99 11.64 10.70     O6II(f) 76 0
64 BD+40 4227A SB* 20 33 15.0781182864 +41 18 50.479292556 10.42 10.27 8.98 8.03 6.83 O6Ib(fc)+O4.5:III:(fc) 235 0
65 Schulte 23 * 20 33 15.7083033168 +41 20 17.174193540 14.21 14.07 12.61     O9V 34 0
66 Schulte 8D SB* 20 33 16.3364502072 +41 19 01.883101584 13.66 13.47 12.02     O8.5V+O9V+A2V-O 40 0
67 Schulte 24 * 20 33 17.4825784080 +41 17 09.350977524 13.85 13.47 11.88     O8V(n) 42 0
68 Schulte 8C * 20 33 17.9820761856 +41 18 31.194812988 12.2 11.43 10.19     O4.5III(fc) 79 0
69 RLP 680 SB* 20 33 18.0338622552 +41 21 36.661612428 13.9 12.72 11.82     O8V+B-O 35 0
70 Schulte 64 Be* 20 33 18.5309527200 +41 15 35.149489128 18.17 17.24 14.88     B1Ve-B3Ve 25 0
71 ALS 15192 * 20 33 19.2666413880 +41 24 44.823537180 17.05 16.6 14.99     B5IV 11 0
72 GSC 03161-01385 * 20 33 21.0165110136 +41 17 40.120725840 14.57 14.24 12.70     O9V 28 0
73 V* V2190 Cyg Pu* 20 33 24.7399778520 +41 22 04.473811524     14.06     B2Ve: 15 0
74 GSC 03157-00327 * 20 33 26.7558420864 +41 10 59.437772256 15.48 14.87 13.00     O8Vz 30 0
75 [D75b] Em* 20+118 Em* 20 33 27.1248707400 +41 35 58.448082300 17.21 16.9 14.61     Be 11 0
76 Schulte 74 SB* 20 33 30.3173970432 +41 35 57.893152056 15.04 14.41 12.51     O8V+B2-O 26 0
77 RLP 721 EB* 20 33 30.515 +41 20 17.13   16.06 14.41 13.81   B4Ve 13 0
78 Schulte 18 * 20 33 30.7901427336 +41 15 22.693080852 13.38 12.54 10.860     B1I 48 0
79 RLP 724 SB* 20 33 31.6396483032 +41 21 45.972551592 15.34 15.03 13.73     B2V+B-O 17 0
80 ALS 15176 * 20 33 34.5590633544 +41 21 37.274390712 16.39 16.1 14.71     B7:V 13 0
81 Schulte 70 SB* 20 33 36.9940107864 +41 16 11.325832716 14.46 14.06 12.40     O9.5IV(n) 33 0
82 Schulte 19 s*b 20 33 39.1040288712 +41 19 25.992295824 12.91 12.77 10.944 10.38   B0Iab+B-O 68 0
83 EM* AS 428 SB* 20 33 39.7935831360 +41 22 52.188298860 13.17 12.21 11.38     B1V+B1: 34 0
84 GSC 03161-01086 * 20 33 40.8633896328 +41 30 18.953823168 14.61 14.32 12.77     O7V 23 0
85 BD+41 3804 s*b 20 33 46.1145474912 +41 33 00.991426968 11.82 11.41 9.88     O9.7Iab 96 0
86 GSC 03161-01190 * 20 33 47.5736777208 +41 29 58.104710124   15.78 14.27     B5V: 7 0
87 ALS 15189 * 20 33 48.7935041088 +41 37 40.082862576 16.7 16.47 14.94     B2Ve: 12 0
88 Schulte 71 SB* 20 33 48.8417931672 +41 19 40.566513900 15.12 14.73 13.34     B1V+B1.5V 18 0
89 Schulte 27 SB* 20 33 59.5281120792 +41 17 35.477936340 14.44 13.97 12.203     O9.7V(n)+O9.7V(n) 46 0
90 RLP 814 EB* 20 34 06.0155486352 +41 08 09.132034596 16.37 15.64 13.415     B0-B1+B1-B2 27 0
91 BD+41 3807 SB* 20 34 08.5147948176 +41 36 59.408503092 11.74 11.52 10.03     O5I+O-B 120 0
92 Schulte 29 SB* 20 34 13.5108732672 +41 35 02.859602280 13.59 13.41 11.91     O7V+B-O 39 0
93 Schulte 73 SB* 20 34 21.9323730840 +41 17 01.655524788   14.13 12.40     O8Vz+O8Vz 27 0
94 RLP 335 SB* 20 34 29.5987121592 +41 31 45.516383076 14.72 13.30 11.64     O7V+O9V 41 0
95 Schulte 30 Em* 20 34 43.5995109360 +41 29 04.799547924 14.13 13.83 12.240     B1.5III 31 0
96 V* V2550 Cyg EB* 20 34 58.7802708120 +41 36 17.359091316   13.591 11.470 10.671   B0Ib+B0III 25 0

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2022.09.28-07:48:11

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