2007ApJ...664.1102K

Query : 2007ApJ...664.1102K

2007ApJ...664.1102K - Astrophys. J., 664, 1102-1120 (2007/August-1)

A radial velocity survey of the Cyg OB2 association.

KIMINKI D.C., KOBULNICKY H.A., KINEMUCHI K., IRWIN J.S., FRYER C.L., BERRINGTON R.C., UZPEN B., MONSON A.J., PIERCE M.J. and WOOSLEY S.E.

Abstract (from CDS):

We conducted a radial velocity survey of the Cyg OB2 association over a 6 yr (1999-2005) time interval to search for massive close binaries. During this time we obtained 1139 spectra on 146 OB stars to measure mean systemic radial velocities and radial velocity variations. We spectroscopically identify 73 new OB stars for the first time, the majority of which are likely to be association members. Spectroscopic evidence is also presented for a B3 Iae classification and temperature class variation (B3-B8) on the order of 1 yr for Cyg OB2 No. 12. Calculations of the initial mass function with the current spectroscopic sample yield Γ=-2.2±0.1. Of the 120 stars with the most reliable data, 36 are probable and 9 are possible single-lined spectroscopic binaries. We also identify three new and eight candidate double-lined spectroscopic binaries. These data imply a lower limit on the massive binary fraction of 30%-42%. The calculated velocity dispersion for Cyg OB2 is 2.44±0.07 km/s, which is typical of open clusters. No runaway OB stars were found.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Close - Stars: Binaries: General - Stars: Binaries: Spectroscopic - Stars: Early-Type - Stars: Kinematics - Surveys - Techniques: Radial Velocities

VizieR on-line data: <Available at CDS (J/ApJ/664/1102): table2.dat table3.dat table4.dat table5.dat>

Errata: erratum vol. 681, p. 735 (2008)

Simbad objects: 157

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Number of rows : 157
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HD 1174 * 00 15 40.9405317336 -71 25 33.971031228   9.91 8.77     K1/2III 13 0
2 * alf Ari PM* 02 07 10.40570 +23 27 44.7032 4.29 3.17 2.01 1.15 0.54 K2-IIIbCa-1 622 2
3 * mu. Tau * 04 15 32.0568707393 +08 53 32.491567629 3.74 4.205 4.279     B3IV 149 0
4 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2330 0
5 * ome Sco bC* 16 06 48.4249866846 -20 40 09.079866331 3.10 3.92 3.97 3.91 3.99 B1V 470 0
6 HD 164402 s*b 18 01 54.3809958600 -22 46 49.059228432 4.88 5.77 5.77 5.74 5.69 B0Iab/b 173 0
7 HD 171391 PM* 18 35 02.3926287840 -10 58 37.942910580   6.027 5.119     G8II/III 133 0
8 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 490 0
9 * omi Aql PM* 19 51 01.6436960928 +10 24 56.592457524   5.66   4.8   F8V 455 0
10 GSC 03161-01264 * 20 30 39.8050574280 +41 36 50.632151976 15.11 14.57 12.93     O6.5V 23 0
11 RLP 1520 SB* 20 30 50.7333660192 +41 35 06.639049932 15.23 15.04 13.74     B1.5V+B+? 17 0
12 GSC 03161-01224 * 20 30 51.1144819416 +41 20 21.764885280 17.28 16.66 14.48     B0V 16 0
13 GSC 03161-00706 * 20 30 59.383 +41 35 59.94   15 13.73     B2V 10 0
14 Schulte 1 SB* 20 31 10.544472 +41 31 53.52024 12.82 12.69 11.09 10.57   O8V+B 65 0
15 RLP 1592 SB* 20 31 18.3295427976 +41 21 21.703264884 15.88 15.09 12.99     O9III+ 27 0
16 Schulte 2 V* 20 31 22.0268518920 +41 31 28.365740076 12.01 11.82 10.64     B1Ib: 65 0
17 2MASS J20313055+4137159 * 20 31 30.5455693344 +41 37 15.901609728   15.78 14.56     B2V 10 0
18 RLP 582 SB* 20 31 33.3769187472 +41 22 49.014033456 16.52 15.81 13.81     B1V+B2V: 20 0
19 2MASS J20313364+4136046 * 20 31 33.6418510320 +41 36 04.668424776   15.89 14.60     B3V 10 0
20 2MASS J20313415+4131082 * 20 31 34.1481969360 +41 31 08.186201328   16.14 14.88     B3IV 7 0
21 2MASS J20314163+4128209 * 20 31 41.6293813680 +41 28 20.916711732   15.74 14.40     B3V 10 0
22 RLP 593 * 20 31 45.3998073432 +41 18 26.728678620 14.91 14.25 12.26     O8V 31 0
23 Schulte 20 SB* 20 31 49.6575031512 +41 28 26.510600388 12.67 12.63 11.52     O9III+B 46 0
24 2MASS J20315540+4135276 * 20 31 55.4022789624 +41 35 27.530995560   16.32 15.07     B3V 8 0
25 [MT91] 170 * 20 31 56.2299658231 +41 35 12.055789973   16.26 15.21     B5:V 7 0
26 GSC 03161-01016 * 20 31 56.3690544360 +41 33 04.995050292 15.38 15.11 13.90     B1.5V 13 0
27 RLP 210 SB* 20 31 56.9461566120 +41 31 47.764616124 13.99 13.76 12.55     B2III+G-B 22 0
28 GSC 03161-00887 * 20 31 59.9614054272 +41 37 14.085624216   15.46 14.00     B3V 10 0
29 NAME Cyg Complex reg 20 32 +45.0           ~ 600 0
30 2MASS J20320311+4132302 * 20 32 03.1061515488 +41 32 30.239553552   15.34 14.14     B2Ve 10 0
31 RLP 545 SB* 20 32 03.7666533504 +41 25 10.443609084 15.15 14.76 13.24     B0.5V 20 0
32 2MASS J20320465+4127483 * 20 32 04.6475605320 +41 27 48.308287284   15.94 14.77     B6:V 3 0
33 GSC 03161-00885 * 20 32 04.8045585936 +41 28 44.084705556   14.85 13.81     B3IV 10 0
34 2MASS J20320565+4127489 * 20 32 05.6483352216 +41 27 48.964755204   16.12 14.81     B6V 8 0
35 GEN# +9.00030603 * 20 32 06.8731854672 +41 17 56.967519984   15.92 13.94     B0:II 11 0
36 RLP 615 SB* 20 32 07.9695369168 +41 21 59.849287740   15.81 14.46     B2V+A-B 12 0
37 [MT91] 213 Psr 20 32 13.1247390384 +41 27 24.346666440 13.12 13.08 11.266     B0Vp 290 0
38 [MT91] 215 * 20 32 13.5181557696 +41 27 29.986649172   13.93 12.97     B1V 11 0
39 RLP 527 * 20 32 13.8078585168 +41 27 41.414129244   14.2 13.02     B1.5V 13 0
40 BD+40 4219 * 20 32 13.8219154968 +41 27 12.006516060 11.50 11.40 10.22     O7III((f)) 113 0
41 ALS 15167 * 20 32 14.5997206848 +41 22 33.096770112 16.36 15.86 14.34     B1V 14 0
42 [MT91] 221 * 20 32 14.6955487680 +41 27 39.686180652   14.92 13.62     B2V 14 0
43 2MASS J20321504+4119303 * 20 32 15.0387020568 +41 19 30.424269828   16.29 14.9     B3V 10 0
44 Schulte 14 Em* 20 32 16.5622071096 +41 25 35.670679176 12.84 12.27 11.47     O9V 48 0
45 RLP 619 SB* 20 32 19.6472111832 +41 20 38.899179780 14.79 14.53 13.25     B1.5V+B 15 0
46 ALS 15187 * 20 32 21.3466446144 +41 18 35.477965044 17.31 16.71 14.91     B1V 13 0
47 GSC 03161-01342 * 20 32 21.7501948560 +41 34 25.027112892   15.47 14.33     B4V 9 0
48 RLP 530 SB* 20 32 22.1197789656 +41 27 42.085617228   14.58 13.88     B1.5V+B 12 0
49 GSC 03161-01109 * 20 32 25.4843793648 +41 24 52.124339520 14.99 14.67 13.36     B2V 17 0
50 GSC 03161-01003 * 20 32 26.0775184320 +41 29 39.333966612 14.1 13.94 12.88     B1V 17 0
51 RLP 631 SB* 20 32 26.5055734776 +41 19 13.836357012 16.11 15.7 14.15     B2III+B1V 20 0
52 GSC 03161-01143 * 20 32 27.2345395008 +41 21 56.631173220   16.2 14.82     B2III 11 0
53 Schulte 15 SB* 20 32 27.6544131144 +41 26 22.073616744 12.39 12.30 11.10     O8V+B 52 0
54 Schulte 21 * 20 32 27.7375852104 +41 28 52.248099612 12.39 12.01 11.30 11.05   B0Ib 45 0
55 GSC 03157-01112 * 20 32 30.8858373048 +41 07 03.622397484   13.80 12.66 12.33   B2III 11 0
56 RLP 497 SB* 20 32 31.4083592352 +41 30 51.602419368   15.81 14.38     B2.5V 11 0
57 2MASS J20323233+4122578 * 20 32 32.3197776144 +41 22 57.794705436   16.17 14.68     B4V 11 0
58 ALS 15186 * 20 32 32.5377656160 +41 26 46.815246960 16.82 16.48 14.91     B5:V 9 0
59 ALS 15143 * 20 32 32.6575447728 +41 27 04.595697396 14.71 14.57 13.47     B2V 14 0
60 RLP 492 SB* 20 32 37.0177286328 +41 23 05.186805072 15.01 14.59 13.08     B2V+B-F 22 0
61 RLP 494 SB* 20 32 37.7595818832 +41 26 15.394216992 15.18 14.92 13.71     B1.5V+G-B 18 0
62 2MASS J20323835+4128567 * 20 32 38.3435626200 +41 28 56.719109964   15.68 14.43     B3V 13 0
63 Schulte 16 * 20 32 38.5694704320 +41 25 13.776724056 12.05 11.88 11.12     O7.5IV(n) 51 0
64 ALS 15135 * 20 32 38.8624280376 +41 25 20.817913620 14.29 14.26 13.05     B1V 15 0
65 Schulte 12 s*b 20 32 40.9572199728 +41 14 29.279036940 16.1 14.45 11.702     B3-4Ia+ 424 0
66 RLP 644 SB* 20 32 42.8884391784 +41 20 16.477275012   15.26 13.87     B2V+B3V 19 0
67 BD+40 4221 * 20 32 45.4494231552 +41 25 37.543209348 12.06 11.93 10.68     O8.5V(n) 61 0
68 ALS 21110 * 20 32 46.4541809184 +41 24 22.390164468   16.24 14.91     B2.5V 11 0
69 2MASS J20324675+4126160 * 20 32 46.7554583832 +41 26 16.005248736   15.67 14.30     B1.5III 11 0
70 [MT91] 336 SB* 20 32 49.6802921976 +41 25 36.457180680   15.3 14.13     B2V+B-M 12 0
71 Schulte 17 SB* 20 32 50.0160775512 +41 23 44.684507976 13.15 12.43 11.33     O8V+O-G 44 0
72 ALS 15170 * 20 32 50.7471146328 +41 15 02.183388768 17.2 16.42 14.44     B1V 16 0
73 Schulte 37 * 20 32 54.4064649768 +41 15 21.849647796 17.76 16.97 14.81     B3V 15 0
74 ALS 15156 * 20 32 56.6636273064 +41 23 40.890896304 15.41 15.09 13.81     B1V 16 0
75 RLP 994 SB* 20 32 58.9203050976 +41 04 30.012303288 18.01 17.14 14.958   12.580 B0V+B2:V 25 0
76 GSC 03161-01218 * 20 32 59.1773346576 +41 24 25.491471588 13.47 13.26 11.91     O8V 33 0
77 Schulte 41 SB* 20 32 59.6317342392 +41 15 14.679727632 16.54 15.59 13.49     O9.7III(n) 34 0
78 RLP 666 SB* 20 33 02.9131259304 +41 17 43.161301572 15.67 15.06 12.94 12.18   O8V+G-O 35 0
79 Schulte 54 * 20 33 04.4144078688 +41 17 08.958424344 16.58 15.89 14.14     B1V 18 0
80 GSC 03161-01357 * 20 33 05.1877575840 +41 17 51.239205816 16.28 15.77 14.15     B1V 18 0
81 RLP 107 SB* 20 33 05.2620969456 +41 43 36.748888104 14.9 14.43 12.94     B1V+B 24 0
82 ALS 15165 * 20 33 06.6113074032 +41 21 13.128687648 16.58 15.97 14.21     B0.5V 16 0
83 Schulte 22 SB* 20 33 08.799 +41 13 18.21 14.33 13.59 11.55     O3If*+O6V((f)) 72 0
84 Schulte 50 SB* 20 33 09.60288 +41 13 00.5520 15.52 14.82 12.86 12.32   O9V+B9V-A0V 34 1
85 Schulte 51 * 20 33 10.1211775920 +41 13 10.168704480 16.29 15.56 13.62     O9.5Vn 24 1
86 ALS 15190 * 20 33 10.2850243200 +41 23 44.600309880 16.67 16.36 14.97     B4II-III 13 0
87 ALS 15161 * 20 33 10.34 +41 13 06.4 16.63 16 14.05     BOV 14 0
88 ALS 21113 * 20 33 10.4640116712 +41 20 57.371779536   15.83 14.06     B1V 18 0
89 RLP 678 EB* 20 33 10.5041613984 +41 22 22.405661292 14.97 14.54 12.958     B0V+(B3V+B6V) 40 0
90 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O5I+O4III 232 0
91 ALS 15181 * 20 33 11.0607015672 +41 10 32.027017008 17.82 16.97 14.78     B0V 17 0
92 ALS 15168 * 20 33 11.3739563424 +41 17 58.553509524 16.36 15.9 14.38     B2III: 16 0
93 2MASS J20331182+4124054 * 20 33 11.8143520176 +41 24 05.411799324   15.6 14.12     B5V 9 0
94 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 943 0
95 RLP 853 SB* 20 33 13.2612575376 +41 13 28.656230412 16.63 15.76 13.61     O6.5V((f)) 36 0
96 2MASS J20331336+4126397 * 20 33 13.3579462512 +41 26 39.674315220   15.59 14.45     B5:V 13 0
97 GSC 03157-00872 * 20 33 13.6906302984 +41 13 05.770090668 15.27 14.73 12.92     O8V 33 0
98 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 145 0
99 ALS 15175 * 20 33 14.3372675616 +41 19 33.126329208 17.15 16.46 14.67     B5: 12 0
100 BD+40 4227B * 20 33 14.7561575856 +41 18 41.750437968 11.99 11.64 10.70     O6II(f) 80 0
101 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) 246 0
102 GSC 03161-01087 * 20 33 15.3141210600 +41 29 56.765628888 15.49 15.02 13.43     B1V 17 0
103 ALS 15150 * 20 33 15.4898271312 +41 27 33.088374504 15.4 15.06 13.65     B1III 13 0
104 Schulte 23 * 20 33 15.7083033168 +41 20 17.174193540 14.21 14.07 12.61     O9V 38 0
105 Schulte 8D SB* 20 33 16.3364502072 +41 19 01.883101584 13.66 13.47 12.02     O8.5V+O9V+A2V-O 44 0
106 ALS 15169 * 20 33 17.4051695952 +41 12 38.725251624 17.11 16.34 14.43     B0:V 19 0
107 Schulte 24 * 20 33 17.4825784080 +41 17 09.350977524 13.85 13.47 11.88     O8V(n) 47 0
108 Schulte 8C * 20 33 17.9820761856 +41 18 31.194812988 12.2 11.43 10.19     O4.5III(fc) 83 0
109 RLP 680 SB* 20 33 18.0338622552 +41 21 36.661612428 13.9 12.72 11.82     O8V+B-O 38 0
110 Schulte 64 Be* 20 33 18.5309527200 +41 15 35.149489128 18.17 17.24 14.88     B1Ve-B3Ve 27 0
111 ALS 15180 * 20 33 18.5863677984 +41 24 49.347699948 16.75 16.29 14.76     B0: 13 0
112 ALS 15184 * 20 33 19.1423803776 +41 17 44.986739532 17.04 16.53 14.85     B1V 15 0
113 ALS 15192 * 20 33 19.2666413880 +41 24 44.823537180 17.05 16.6 14.99     B5IV 12 0
114 V* V2189 Cyg EB* 20 33 20.8955598254 +41 18 01.350819236   18.06       ~ 7 0
115 ALS 15177 * 20 33 20.9918123376 +41 35 51.817116372 17.08 16.51 14.72     B0III-IV 13 0
116 GSC 03161-01385 * 20 33 21.0165110136 +41 17 40.120725840 14.57 14.24 12.70     O9V 32 0
117 ALS 15166 * 20 33 22.4490987024 +41 22 16.932211788 16.1 15.68 14.26     B2V 18 0
118 Schulte 66 * 20 33 23.2325429760 +41 13 42.026795400 17.68 16.69 14.66     B1V 15 0
119 ALS 15155 * 20 33 23.3393716008 +41 20 17.192174676 15.67 15.24 13.74     B1V 19 0
120 RLP 841 ** 20 33 23.472072 +41 09 12.90312 14.97 14.23 11.83 10.98   O6IV((f)) 41 0
121 V* V2190 Cyg Pu* 20 33 24.7399778520 +41 22 04.473811524     14.06     B2Ve: 17 0
122 Schulte 25 * 20 33 25.564 +41 33 27.00 13.52 13.15 11.58     O8Vz 30 0
123 GSC 03157-00327 * 20 33 26.7558420864 +41 10 59.437772256 15.48 14.87 13.00     O8Vz 34 0
124 [D75b] Em* 20+118 Em* 20 33 27.1248707400 +41 35 58.448082300 17.21 16.9 14.61     Be 13 0
125 Schulte 74 SB* 20 33 30.3173970432 +41 35 57.893152056 15.04 14.41 12.51     O8V+B2-O 29 0
126 RLP 721 EB* 20 33 30.515 +41 20 17.13   16.06 14.41 13.81   B4Ve 13 0
127 Schulte 18 * 20 33 30.7901427336 +41 15 22.693080852 13.38 12.54 10.860     B1I 49 0
128 RLP 724 SB* 20 33 31.6396483032 +41 21 45.972551592 15.34 15.03 13.73     B2V+B-O 19 0
129 ALS 15179 * 20 33 33.3500051064 +41 08 36.400701228 17.78 16.92 14.76     B3V 11 0
130 GSC 03161-01254 * 20 33 33.939 +41 19 38.25 15.95 15.49 13.87     B3I 19 0
131 EM* AS 427 Em* 20 33 34.3352362680 +41 18 11.427242760 15.61 15.18 13.41     B2Ve 27 0
132 ALS 15176 * 20 33 34.5590633544 +41 21 37.274390712 16.39 16.1 14.71     B7:V 13 0
133 Schulte 70 SB* 20 33 36.9940107864 +41 16 11.325832716 14.46 14.06 12.40     O9.5IV(n) 36 0
134 Schulte 19 s*b 20 33 39.1040288712 +41 19 25.992295824 12.91 12.77 10.944 10.38   B0Iab+B-O 70 0
135 EM* AS 428 SB* 20 33 39.7935831360 +41 22 52.188298860 13.17 12.21 11.38     B1V+B1: 35 0
136 GSC 03161-01086 * 20 33 40.8633896328 +41 30 18.953823168 14.61 14.32 12.77     O7V 27 0
137 GSC 03157-01100 * 20 33 42.3404625144 +41 11 45.547805292 16.22 15.71 13.89     B0V 19 0
138 ALS 15188 * 20 33 42.5364294456 +41 14 56.650040124 17.41 16.84 14.93     B1V: 16 0
139 BD+41 3804 s*b 20 33 46.1145474912 +41 33 00.991426968 11.82 11.41 9.88     O9.7Iab 103 0
140 ALS 15158 * 20 33 46.8086403840 +41 08 01.822162056 16.06 15.53 13.81     B1III 17 0
141 GSC 03161-01190 * 20 33 47.5736777208 +41 29 58.104710124   15.78 14.27     B5V: 8 0
142 2MASS J20334758+4109064 * 20 33 47.5864735272 +41 09 06.418488996   16.14 14.21     B2V 14 0
143 Schulte 26 * 20 33 47.8316875224 +41 20 41.377739100 13.77 13.33 11.78     B1III 31 0
144 ALS 15173 * 20 33 48.3548742888 +41 13 13.759164012 17.09 16.52 14.65     B2III 14 0
145 ALS 15189 * 20 33 48.7935041088 +41 37 40.082862576 16.7 16.47 14.94     B2Ve: 14 0
146 Schulte 71 SB* 20 33 48.8417931672 +41 19 40.566513900 15.12 14.73 13.34     B1V+B1.5V 20 0
147 GSC 03157-00193 * 20 33 59.2509364128 +41 05 38.094030708 15.76 15.3 13.61     B0V 22 0
148 Schulte 27 SB* 20 33 59.5281120792 +41 17 35.477936340 14.44 13.97 12.203   10.250 O9.7V(n)+O9.7V(n) 50 0
149 GSC 03157-01008 * 20 34 04.3480515480 +41 08 07.924191792 16.06 15.46 13.66     B1III 17 0
150 GSC 03157-00727 * 20 34 04.8605977224 +41 05 12.915621852 15.88 15.34 13.50     O8.5V 20 0
151 RLP 814 SB* 20 34 06.0155486352 +41 08 09.132034596 16.37 15.64 13.415     B0-B1+B1-B2 30 0
152 BD+41 3807 SB* 20 34 08.5147948176 +41 36 59.408503092 11.74 11.52 10.03     O5.5Ifc 128 0
153 Schulte 75 * 20 34 09.5115755136 +41 34 13.732080096 14.51 14.25 12.79     O9.5IV 27 0
154 Schulte 29 SB* 20 34 13.5108732672 +41 35 02.859602280 13.59 13.41 11.91     O7V+B-O 42 0
155 ALS 15174 * 20 34 24.6201342744 +41 26 25.138048272 16.74 16.32 14.65     B1V 16 0
156 RLP 335 SB* 20 34 29.5987121592 +41 31 45.516383076 14.72 13.30 11.64     O7V+O9V 45 0
157 Schulte 30 Em* 20 34 43.5995109360 +41 29 04.799547924 14.13 13.83 12.240     B1.5III 35 0

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