2012ApJ...747...41K

Query : 2012ApJ...747...41K

2012ApJ...747...41K - Astrophys. J., 747, 41 (2012/March-1)

Additional massive binaries in the Cygnus OB2 association.

KIMINKI D.C., KOBULNICKY H.A., EWING I., BAGLEY KIMINKI M.M., LUNDQUIST M., ALEXANDER M., VARGAS-ALVAREZ C., CHOI H. and HENDERSON C.B.

Abstract (from CDS):

We report the discovery and orbital solutions for two new OB binaries in the Cygnus OB2 Association, MT311 (B2V + B3V) and MT605 (B0.5V + B2.5:V). We also identify the system MT429 as a probable triple system consisting of a tight eclipsing 2.97 day B3V+B6V pair and a B0V at a projected separation of 138 AU. We further provide the first spectroscopic orbital solutions to the eclipsing, double-lined, O-star binary MT696 (O9.5V + B1:V), the double-lined, early B binary MT720 (B0-1V + B1-2V), and the double-lined, O-star binary MT771 (O7V + O9V). These systems exhibit orbital periods between 1.5 days and 12.3 days, with the majority having P <6 days. The two new binary discoveries and six spectroscopic solutions bring the total number of known massive binaries in the central region of the Cygnus OB2 Association to 20, with all but two having full orbital solutions.

Abstract Copyright: ∼

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

Simbad objects: 32

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Number of rows : 32
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 * ups Ori SB* 05 31 55.8599595648 -07 18 05.535884975 3.30 4.36 4.63 4.75 5.01 O9.7V 426 0
2 HD 36960 * 05 35 02.6823091513 -06 00 07.308349203 3.52 4.50 4.72     B0.5V 283 0
3 V* V1388 Ori EB* 06 10 59.1666130080 +11 59 41.484558444 6.67 7.44 7.50     B2V 70 0
4 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
5 HD 46202 bC* 06 32 10.4706981304 +04 57 59.764912343 7.60 8.332 8.269 7.98 7.86 O9.2V 300 0
6 * eta Hya bC* 08 43 13.4757536071 +03 23 55.182801587 3.380 4.100 4.300 4.37 4.56 B3V 418 1
7 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 204 0
8 * ome Sco bC* 16 06 48.4249866846 -20 40 09.079866331 3.10 3.92 3.97 3.91 3.99 B1V 492 0
9 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
10 NGC 6231 OpC 16 54 14.4 -41 48 53           ~ 562 0
11 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
12 [CPR2002] A45 SB* 20 29 46.6721589624 +41 05 08.338345224           B0.5V+B1V:-B2V: 21 0
13 V* V1827 Cyg s*b 20 30 27.3018237840 +41 13 25.130220744     13.053     O6Iaf+O9Ia 42 0
14 Schulte 1 SB* 20 31 10.544472 +41 31 53.52024 12.82 12.69 11.09 10.57   O8V+B 70 0
15 BD+40 4212 SB* 20 31 37.5053189952 +41 13 21.001757520 12.46 11.5 10.214     O6IV:+O9III 83 1
16 Schulte 20 SB* 20 31 49.6575031512 +41 28 26.510600388 12.67 12.63 11.52     O9III+B 50 0
17 BD+40 4220 s*b 20 32 22.4238071594 +41 18 18.942475904 11.32 10.61 9.185     O7Iafep 414 0
18 RLP 631 SB* 20 32 26.5055734776 +41 19 13.836357012 16.11 15.7 14.15     B2III+B1V 23 0
19 Schulte 15 SB* 20 32 27.6544131144 +41 26 22.073616744 12.39 12.30 11.10     O8V+B 55 0
20 RLP 644 SB* 20 32 42.8884391784 +41 20 16.477275012   15.26 13.87     B2V+B3V 21 0
21 RLP 994 SB* 20 32 58.9203050976 +41 04 30.012303288 18.01 17.14 14.958   12.580 B0V+B2:V 30 0
22 Schulte 50 SB* 20 33 09.60288 +41 13 00.5520 15.52 14.82 12.86 12.32   O9V+B9V-A0V 38 1
23 RLP 678 EB* 20 33 10.5041613984 +41 22 22.405661292 14.97 14.54 12.958     B0V+(B3V+B6V) 44 0
24 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O5I+O4III 243 0
25 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
26 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) 253 0
27 EM* AS 428 SB* 20 33 39.7935831360 +41 22 52.188298860 13.17 12.21 11.38     B1V+B1: 38 0
28 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) 58 0
29 RLP 814 SB* 20 34 06.0155486352 +41 08 09.132034596 16.37 15.64 13.415     B0-B1+B1-B2 35 0
30 Schulte 73 SB* 20 34 21.9323730840 +41 17 01.655524788   14.13 12.40     O8Vz+O8Vz 34 0
31 RLP 335 SB* 20 34 29.5987121592 +41 31 45.516383076 14.72 13.30 11.64     O7V+O9V 47 0
32 V* V2550 Cyg SB* 20 34 58.7802708120 +41 36 17.359091316   13.591 11.470 10.671   B0Ib+B0III 31 0

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