2008ApJ...679.1478K

Query : 2008ApJ...679.1478K

2008ApJ...679.1478K - Astrophys. J., 679, 1478-1489 (2008/June-1)

New massive binaries in the Cygnus OB2 association.

KIMINKI D.C., McSWAIN M.V. and KOBULNICKY H.A.

Abstract (from CDS):

As part of an ongoing study to determine the distribution of orbital parameters for massive binaries in the Cyg OB2 association, we present the orbital solutions for two new single-lined spectroscopic binaries, MT 059 (O8 V) and MT 258 (O8 V), and one double-lined eclipsing binary (Schulte 3). We also constrain the orbital elements of three additional double-lined systems (MT 252, MT 720, and MT 771). Periods for all systems range from 1.5 to 19 days, and eccentricities range from 0 to 0.11. The six new OB binary systems bring the total number of multiple systems within the core region of Cyg OB2 to 11. The current sample does not show evidence for a ``twin-heavy'' binary distribution.

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

Simbad objects: 17

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Number of rows : 17
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 * iot Ori SB* 05 35 25.9861932063 -05 54 35.598684624 1.45 2.53 2.77     O9IIIvar 793 0
2 V* V661 Car SB* 10 44 00.3711575208 -59 52 27.521778900 7.60 8.31 8.04 8.75   O6.5III(f) 148 0
3 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
4 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 522 0
5 * omi Aql PM* 19 51 01.6436960928 +10 24 56.592457524   5.66   4.8   F8V 481 0
6 Schulte 1 SB* 20 31 10.544472 +41 31 53.52024 12.82 12.69 11.09 10.57   O8V+B 70 0
7 Schulte 2 V* 20 31 22.0268518920 +41 31 28.365740076 12.01 11.82 10.64     B1Ib: 68 0
8 BD+40 4212 SB* 20 31 37.5053189952 +41 13 21.001757520 12.46 11.5 10.214     O6IV:+O9III 83 1
9 BD+40 4220 s*b 20 32 22.4238071594 +41 18 18.942475904 11.32 10.61 9.185     O7Iafep 414 0
10 RLP 631 SB* 20 32 26.5055734776 +41 19 13.836357012 16.11 15.7 14.15     B2III+B1V 23 0
11 Schulte 15 SB* 20 32 27.6544131144 +41 26 22.073616744 12.39 12.30 11.10     O8V+B 55 0
12 Schulte 50 SB* 20 33 09.60288 +41 13 00.5520 15.52 14.82 12.86 12.32   O9V+B9V-A0V 38 1
13 RLP 678 EB* 20 33 10.5041613984 +41 22 22.405661292 14.97 14.54 12.958     B0V+(B3V+B6V) 44 0
14 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
15 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
16 RLP 814 SB* 20 34 06.0155486352 +41 08 09.132034596 16.37 15.64 13.415     B0-B1+B1-B2 35 0
17 RLP 335 SB* 20 34 29.5987121592 +41 31 45.516383076 14.72 13.30 11.64     O7V+O9V 47 0

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