2002MNRAS.336.1099A

Query : 2002MNRAS.336.1099A

2002MNRAS.336.1099A - Mon. Not. R. Astron. Soc., 336, 1099-1108 (2002/November-2)

Optical spectroscopy of X-Mega targets - IV. CPD-59°2636: a new O-type multiple system in the Carina Nebula.

ALBACETE COLOMBO J.F., MORRELL N.I., RAUW G., CORCORAN M.F., NIEMELA V.S. and SANA H.

Abstract (from CDS):

High-resolution optical spectroscopy of CPD-59°2636, one of the O-type stars in the open cluster Trumpler 16 in the Carina Nebula, reveals this object to be a multiple system displaying triple lines which we label as components A, B and C of spectral types O7 V, O8 V and O9 V, respectively. From our radial velocity measurements we find that the components A and B form a close binary with a period of 3.6284 d, and we obtain the first circular radial velocity orbit for this system with semi-amplitudes of 184 and 192 km.s–1, leading to minimum masses of 10.1 and 9.7 M☉. We find that the component C is a single lined binary with a period of 5.034 d and semi-amplitude of 48 km s –1. We also analyse the X-ray radiation from CPD-59°2636, finding neither appreciable overluminosity nor phase-related X-ray flux variations.

Abstract Copyright: RAS

Journal keyword(s): binaries: general - stars: early-type - stars: fundamental parameters - stars: individual: CPD-59 2636 - open clusters and associations: individual: Trumpler 16 - X-rays: stars.

Simbad objects: 21

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Number of rows : 21
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 HD 5005C * 00 52 49.5560247120 +56 37 36.823054692   8.87 9.17   8.98 O8.5V(n) 28 0
2 HD 41161 * 06 05 52.4562749544 +48 14 57.417890532 5.66 6.658 6.764     O8Vn 139 0
3 HD 46056 Y*O 06 31 20.8608343776 +04 50 03.842554740 7.60 8.36 8.16 8.16 8.09 O8Vn 242 0
4 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
5 HD 73882 ** 08 39 09.53412 -40 25 09.2608 7.07 7.59 7.19 6.67 6.30 O8.5IV 261 1
6 HD 90273 * 10 23 44.4543211632 -57 38 31.534939032 8.35 9.25 9.05 9.58   ON7V((f)) 91 0
7 HD 91824 SB* 10 34 46.6322493936 -58 09 22.038466896 7.17 8.11 8.14 9.02   O7V((f))z 165 0
8 HD 92504 * 10 39 36.8683124520 -57 27 40.634282304 7.47 8.38 8.46 9.296   O8.5V(n) 79 0
9 HD 92555 * 10 39 40.6531566432 -61 17 31.239474504 8.17 9.23 9.28 9.68   O9V 30 0
10 V* V560 Car SB* 10 44 33.7393258944 -59 44 15.434446956 6.89 7.80 7.75 7.56 7.46 O3.5V((f))+O8V 314 0
11 Cl Trumpler 16 OpC 10 45 01.9 -59 42 00           ~ 510 0
12 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
13 * 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
14 CPD-59 2629 * 10 45 08.2352224872 -59 46 06.976659612 10.780 11.336 10.848   9.971 O8.5Vp 78 0
15 V* V731 Car SB* 10 45 12.7214663496 -59 44 46.149112428 8.739 9.472 9.229 9.65 8.699 O8V(n)+O9.5V 98 0
16 CPD-59 2636 ** 10 45 12.8686809888 -59 44 19.205057544 8.913 9.559 9.218   8.535 O8V+O8V 79 1
17 CD-59 3310 SB* 10 45 16.5181708560 -59 43 37.050828744 8.842 9.542 9.219 9.65 8.585 O6V((fc)) 97 0
18 HD 110360 SB* 12 42 12.7021597968 -60 39 08.707043484 8.69 9.79 9.58 9.77   ON7V 61 0
19 HD 164492 Y*O 18 02 23.5527520992 -23 01 50.999556180 6.49 7.49 6.80 7.52   O7.5Vz 240 0
20 HD 166546 V* 18 11 57.0991622952 -20 25 24.149352324 6.40 7.26 7.22 8.36   O9.5IV 96 0
21 * 68 Cyg SB* 21 18 27.1862219256 +43 56 45.399147864 4.05 4.99 5.00     O7.5IIIn((f)) 383 0

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