2021MNRAS.504.5221T

Query : 2021MNRAS.504.5221T

2021MNRAS.504.5221T - Mon. Not. R. Astron. Soc., 504, 5221-5230 (2021/July-2)

The orbit and stellar masses of the archetype colliding-wind binary WR 140.

THOMAS J.D., RICHARDSON N.D., ELDRIDGE J.J., SCHAEFER G.H., MONNIER J.D., SANA H., MOFFAT A.F.J., WILLIAMS P., CORCORAN M.F., STEVENS I.R., WEIGELT G., ZAINOL F.D., ANUGU N., LE BOUQUIN J.-B., TEN BRUMMELAAR T., CAMPOS F., COUPERUS A., DAVIES C.L., ENNIS J., EVERSBERG T., GARDE O., GARDNER T., GUARRO FLO J., KRAUS S., LABDON A., LANTHERMANN C., LEADBEATER R., LESTER T., MAKI C., McBRIDE B., OZUYAR D., RIBEIRO J., SETTERHOLM B., STOBER B., WOOD M. and ZURMUHL U.

Abstract (from CDS):

We present updated orbital elements for the Wolf-Rayet (WR) binary WR 140 (HD 193793; WC7pd + O5.5fc). The new orbital elements were derived using previously published measurements along with 160 new radial velocity measurements across the 2016 periastron passage of WR 140. Additionally, four new measurements of the orbital astrometry were collected with the CHARA Array. With these measurements, we derive stellar masses of M_ WR_ = 10.31±0.45 M_☉and M_ O_ = 29.27±1.14 M☉. We also include a discussion of the evolutionary history of this system from the Binary Population and Spectral Synthesis model grid to show that this WR star likely formed primarily through mass-loss in the stellar winds, with only a moderate amount of mass lost or transferred through binary interactions.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): binaries: general - stars: fundamental parameters - stars: Wolf-Rayet - stars: winds - outflows - stars: individual: WR 140

Simbad objects: 17

goto Full paper

goto View the references in ADS

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 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 951 0
2 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0
3 HD 178538 * 19 07 33.8145150912 +34 23 35.145129336   7.49 7.14     F0 19 0
4 * pi. Dra * 19 20 40.0914694319 +65 42 52.314729157 4.67 4.61 4.59 4.55 4.58 A0III 103 0
5 HD 190918 WR* 20 05 57.3244526328 +35 47 18.150756792 6.11 6.88 6.75     WN5+O9I 385 0
6 HD 191703 * 20 09 50.4102979560 +39 08 12.826372380 7.560 7.430 7.130     F0V 25 0
7 HD 192641 WR* 20 14 31.7666855880 +36 39 39.598210224 7.80 8.20 7.91     WC7pd+O9V 347 0
8 HD 193077 WR* 20 17 00.0260987184 +37 25 23.785483116 7.82 8.32 8.01 8.71   WN5o+B? 297 0
9 HD 228852 * 20 18 33.4740708744 +39 36 24.352482528   9.837 8.37     K3II 24 0
10 HD 193793 WR* 20 20 27.9757908696 +43 51 16.286840244 6.90 7.25 6.85 4.58   WC7pd+O5.5fc 754 0
11 * ome01 Cyg Pu* 20 30 03.5409459288 +48 57 05.640569208 4.23 4.835 4.936     B2.5IV 117 2
12 HD 197176 PM* 20 40 50.0327504160 +35 02 24.096776064   7.668 7.218     F2 23 0
13 HD 201614 * 21 09 42.2194495608 +35 48 15.613840404 9.990 9.160 8.150     K0 15 0
14 HD 204050 * 21 24 39.5649820536 +44 17 30.692183712   9.22 8.05     K1II-III 19 0
15 * iot Peg SB* 22 07 00.6655101792 +25 20 42.356386464 4.190 4.200 3.770 3.36 3.11 F5V 468 1
16 * lam Cep s*b 22 11 30.5765111040 +59 24 52.154264880 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 705 1
17 * 30 Cep * 22 38 39.0517588680 +63 35 04.096947876   5.254 5.188     A0IV 67 0

To bookmark this query, right click on this link: simbad:objects in 2021MNRAS.504.5221T and select 'bookmark this link' or equivalent in the popup menu