2017A&A...600A..33M


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.18CEST22:05:27

2017A&A...600A..33M - Astronomy and Astrophysics, volume 600A, 33-33 (2017/4-1)

Physical properties of seven binary and higher-order multiple OB systems.

MAYER P., HARMANEC P., CHINI R., NASSERI A., NEMRAVOVA J.A., DRECHSEL H., CATALAN-HURTADO R., BARLOW B.N., FREMAT Y. and KOTKOVA L.

Abstract (from CDS):

Analyses of multi-epoch, high-resolution (R∼50000) optical spectra of seven early-type systems provided various important new insights with respect to their multiplicity. First determinations of orbital periods were made for HD 92206 C (2.022d), HD 112244 (27.665d), HD 164438 (10.25d), HD 123056 A (∼1314d) and HD 123056 B (<2d); the orbital period of HD 318015 could be improved (23.445975d). Concerning multiplicity, a third component was discovered for HD 92206 C by means of HeI line profiles. For HD 93146 A, which was hitherto assumed to be SB1, lines of a secondary component could be discerned. HD 123056 turns out to be a multiple system consisting of a high-mass component A (~=O8.5) displaying a broad HeII 5411Å feature with variable radial velocity, and of an inner pair B (~=B0) with double HeI lines. The binary HD 164816 was revisited and some of its system parameters were improved. In particular, we determined its systemic velocity to be -7km/s, which coincides with the radial velocity of the cluster NGC 6530. This fact, together with its distance, suggests the cluster membership of HD 164816. The OB system HD 318015 (V1082 Sco) belongs to the rare class of eclipsing binaries with a supergiant primary (B0.5/0.7). Our combined orbital and light-curve analysis suggests that the secondary resembles an O9.5III star. Our results for a limited sample corroborate the findings that many O stars are actually massive multiple systems.

Abstract Copyright: © ESO, 2017

Journal keyword(s): binaries: spectroscopic - stars: massive - stars: fundamental parameters - stars: general - stars: general

Simbad objects: 23

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Number of rows : 23

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 50846 Al* 06 54 54.7083961175 -01 22 32.849416553   8.46 8.43     B5/7Ib 132 0
2 CD-57 3378 * 10 37 18.6297276078 -58 37 41.769143576 8.4 9.085 8.966 9.59   O8Vz+O9.7V 30 1
3 NGC 3324 OpC 10 37 20 -58 38.5   6.91 6.7     ~ 99 1
4 HD 92206 ** 10 37 22.245 -58 37 22.86 7.46 8.35 8.23 9.01   O6.5V((f))+O6.5V((f)) 69 0
5 HD 93146B * 10 43 59.4516729429 -60 05 13.423825268 9.07 9.86 9.864     O9.7IV 15 0
6 Cl Collinder 228 OpC 10 44 00 -60 05.2   4.58 4.4     ~ 183 0
7 HD 93146A * 10 44 00.1578 -60 05 09.863 7.57 8.48 8.45     O7V((f))z 78 0
8 HD 93146 ** 10 44 00.159 -60 05 09.88   8.25 8.24 9.28   O6V+O9.5V 80 0
9 HD 112244 s*b 12 55 57.1346044550 -56 50 08.891958192 4.49 5.33 5.32 5.21 5.21 O8.5Iab(f)p 191 0
10 CD-61 3757 s*b 13 23 01.7973955863 -62 26 32.242972325 10.74 10.95 10.12 10.02   B1Ia 24 0
11 HD 123056 * 14 07 25.6377162147 -60 28 14.148538108 7.54 8.28 8.14 9.00   O9.5IV(n) 53 0
12 HD 152246 SB* 16 54 05.2978513877 -41 04 46.116620285 6.69 7.45 7.29 8.19   O9IV 110 1
13 NGC 6231 OpC 16 54 08.51 -41 49 36.0   2.83 2.6     ~ 473 0
14 Cl Trumpler 27 OpC 17 36 20 -33 31.0   8.24 6.7     ~ 90 1
15 V* V1082 Sco EB* 17 36 27.3944940961 -33 29 35.837363897 11.79 11.56 10.09 9.91   B0.7Ia 30 0
16 HD 164438 * 18 01 52.2806721008 -19 06 22.082791988 7.37 8.89 8.76 8.28   O9.2IV 74 1
17 HD 164816 Be* 18 03 56.8425960137 -24 18 45.119229391 6.17 7.06 6.986 8.08 6.989 O9.5V+B0V 132 0
18 NGC 6530 OpC 18 04 31 -24 21.5   4.74 4.6     ~ 337 1
19 Ass Sgr OB 1 As* 18 06 -22.8           ~ 111 0
20 IRAS 18449-0115 cor 18 47 34.4947 -01 12 40.269           ~ 291 0
21 V* V1182 Aql bL* 18 55 23.1253977999 +09 20 48.087039876 8.73 9.10 8.64     O7V(n)((f))z+B 103 0
22 V* V1765 Cyg bL* 19 48 50.5978949920 +33 26 14.220574360 5.99 6.578 6.463     B0.5II 135 0
23 V* Y Cyg Al* 20 52 03.5773450587 +34 39 27.481355846 6.31 7.23 7.32     O9.5IV+O9.5IV 350 1

    Equat.    Gal    SGal    Ecl

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2019.10.18-22:05:27

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