2016AJ....152..213S

Query : 2016AJ....152..213S

2016AJ....152..213S - Astron. J., 152, 213-213 (2016/December-0)

Orbits, distance, and stellar masses of the massive triple star σ Orionis.

SCHAEFER G.H., HUMMEL C.A., GIES D.R., ZAVALA R.T., MONNIER J.D., WALTER F.M., TURNER N.H., BARON F., TEN BRUMMELAAR T., CHE X., FARRINGTON C.D., KRAUS S., STURMANN J. and STURMANN L.

Abstract (from CDS):

We present interferometric observations of the σ Orionis triple system using the CHARA Array, NPOI, and VLTI. Using these measurements, we spatially resolve the orbit of the close spectroscopic binary (Aa,Ab) for the first time and present a revised orbit for the wide pair (A,B). Combining the visual orbits with previously published radial velocity measurements and new radial velocities measured at CTIO, we derive dynamical masses for the three massive stars in the system of MAa = 16.99 ± 0.20 M☉, MAb = 12.81 ± 0.18 M☉, and MB = 11.5 ± 1.2 M☉. The inner and outer orbits in the triple are not coplanar, with a relative inclination of 120○-127○. The orbital parallax provides a precise distance of 387.5 ± 1.3 pc to the system. This is a significant improvement over previous estimates of the distance to the young σ Orionis cluster.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: spectroscopic - binaries: visual - stars: fundamental parameters - stars: individual: σ Orionis - techniques: interferometric - techniques: interferometric

VizieR on-line data: <Available at CDS (J/AJ/152/213): table3.dat table5.dat table6.dat table7.dat table8.dat>

Simbad objects: 48

goto Full paper

goto View the references in ADS

Number of rows : 48
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 * gam Peg bC* 00 13 14.1523490172 +15 11 00.954346538 1.75 2.61 2.84 2.94 3.13 B2IV 720 0
2 * mu. And PM* 00 56 45.2090751570 +38 29 57.603377713 4.14 3.99 3.87 3.72 3.64 A6V 227 0
3 * chi Cet PM* 01 49 35.1027660619 -10 41 11.070999501 5.04 5.00 4.68 4.38 4.22 F0V 215 0
4 * 41 Ari ** 02 49 59.0332406 +27 15 37.826018   3.498 3.594     B8Vn 170 0
5 * bet Per SB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1265 1
6 * 94 Cet PM* 03 12 46.4365677072 -01 11 45.955808988   5.631 5.070     F8.5V 478 1
7 * v Eri * 03 30 37.0583178770 -05 04 30.532729396   4.631 4.725     B9III 89 0
8 * psi Per Be* 03 36 29.3797327450 +48 11 33.484405927 3.60 4.17 4.23     B5Ve 431 0
9 * 20 Tau PM* 03 45 49.6081548365 +24 22 03.877565838 3.40 3.80 3.87 3.85 3.90 B7III 451 1
10 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 494 0
11 * eps Per bC* 03 57 51.2393818140 +40 00 36.719213615 1.71 2.71 2.89 2.96 3.14 B0.5III 533 0
12 * nu. Tau * 04 03 09.3791463041 +05 59 21.482527209   3.924 3.883     A0.5Va 138 0
13 * c Per Be* 04 08 39.6935695869 +47 42 45.038007366 3.45 4.00 4.03 3.91 3.93 B3Ve 394 0
14 * 68 Eri PM* 05 08 43.6987121400 -04 27 22.349830176   5.546 5.119     F5.5VkF4mF2 245 0
15 HD 34137 * 05 15 11.8776787152 +01 33 22.134332268   8.64 7.19     K2III 20 0
16 HD 36059 * 05 28 42.4883459088 -08 22 36.017788080   7.58 6.75     G8IV 18 0
17 * del Ori ** 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 O9.5IINwk 796 0
18 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 281 0
19 * eps Ori s*b 05 36 12.81335 -01 12 06.9089 0.48 1.51 1.69 1.76 1.93 B0Ia 921 0
20 * sig Ori C Y*? 05 38 44.1189397296 -02 36 06.310060884   8.77 8.79   9.63 A2Vn 33 0
21 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 855 0
22 * sig Ori D Y*O 05 38 45.6253355112 -02 35 58.894678824 5.7 6.51 6.69   6.98 B2V 67 0
23 * sig Ori E Y*O 05 38 47.2050040320 -02 35 40.521424812 5.66 6.38 6.46 6.84 7.08 B2IV-Vp_He 486 0
24 * zet Ori ** 05 40 45.52666 -01 56 33.2649 0.50 1.56 1.77 1.85 2.05 O9.7Ib+B0III 375 0
25 HD 43318 PM* 06 15 34.2651318984 -00 30 43.880774652   6.15 5.65     F5V 196 0
26 * tet Gem PM* 06 52 47.3388625619 +33 57 40.524337771 3.84 3.70 3.60 3.50 3.42 A2IV 144 0
27 * del Mon * 07 11 51.8604729967 -00 29 33.961811515   4.14 4.15     A0IV 101 0
28 * lam Gem PM* 07 18 05.5789195368 +16 32 25.389581244   3.674 3.559     A4IV 269 0
29 * 21 Lyn PM* 07 26 42.8522129445 +49 12 41.497452754   4.594 4.610     A0.5Vs 121 0
30 * bet CMi Be* 07 27 09.0417373 +08 17 21.536745 2.52 2.80 2.89 2.90 2.96 B8Ve 400 0
31 * 27 Lyn PM* 08 08 27.4509245177 +51 30 23.993952533   4.819 4.797   4.71 A2V 83 0
32 * ups02 Hya V* 10 05 07.4696107864 -13 03 52.655374811 4.22 4.500 4.588     B8V 89 0
33 * eta Leo sg* 10 07 19.9523915176 +16 45 45.587968398 3.17 3.39 3.41 3.32 3.35 A0Ib 351 0
34 * alf Sex * 10 07 56.2837668024 -00 22 18.013326564   4.45 4.49     A0III 105 0
35 * rho Leo s*b 10 32 48.6703908997 +09 18 23.705339948 2.780 3.720 3.870 3.90 4.06 B1Iab 550 0
36 * tet Leo PM* 11 14 14.4056705348 +15 25 46.455911128 3.40 3.33 3.35 3.32 3.34 A2IV 353 0
37 * phi Leo PM* 11 16 39.6997760978 -03 39 05.771550444   4.654 4.450     A5V 135 0
38 * sig Leo PM* 11 21 08.1937792083 +06 01 45.558012784   3.984 4.040     B9.5Vs 148 0
39 * alf02 CVn a2* 12 56 01.6655889007 +38 19 06.155170512 2.44 2.76 2.88 2.98 3.05 A0VpSiEu 707 0
40 BD+09 2882 ** 14 23 22.69526 +08 26 47.8351 4.89 4.92 4.87     ~ 113 0
41 BD+09 2882A PM* 14 23 22.6954782600 +08 26 47.826605184   5.027 5.037     A0V 25 0
42 * pi.01 Boo * 14 40 43.5589117488 +16 25 05.975961096 4.18 4.792 4.893 4.47 4.49 B9IIIpHgMnSi 212 0
43 * 109 Vir PM* 14 46 14.9234473441 +01 53 34.381780831 3.69 3.72 3.73 3.66 3.68 A0IIInn 346 0
44 * nu. Cap * 20 20 39.8157949497 -12 45 32.690284207 4.61 4.72 4.76 4.75 4.81 B9IV 279 0
45 * 42 Peg PM* 22 41 27.7207176 +10 49 52.907917 3.10 3.33 3.41 3.43 3.50 B8.5IV 320 0
46 * psi02 Aqr Be* 23 17 54.2137206 -09 10 57.067524 3.72 4.26 4.40 4.47 4.60 B5V 157 0
47 * iot And Pu* 23 38 08.2003054524 +43 16 05.062997840 3.90 4.18 4.29 4.29 4.38 B8V 169 0
48 * lam Psc PM* 23 42 02.8053593984 +01 46 48.151697051 4.79 4.72 4.51 4.33 4.23 A7V 163 0

To bookmark this query, right click on this link: simbad:objects in 2016AJ....152..213S and select 'bookmark this link' or equivalent in the popup menu