1997A&A...319..481M

Query : 1997A&A...319..481M

1997A&A...319..481M - Astronomy and Astrophysics, volume 319, 481-486 (1997/3-2)

Red giants in open clusters. VI. Orbits of ten spectroscopic binaries.

MERMILLIOD J.-C., ANDERSEN J. and MAYOR M.

Abstract (from CDS):

We present new orbits for ten (single-lined) spectroscopic binaries in seven open clusters: NGC 2489, 2567, 3033, 5822, 6134, 6664 and IC 2488 based on 243 individual radial velocities obtained with the southern CORAVEL scanner. The orbital periods range from 98.5 to 3566 days. The shortest-period orbit is circular, as expected. Seven of the binaries are confirmed cluster members, one is a possible member, and two are clearly non-members. Maximum masses from photometric separation and minimum masses from the spectroscopic orbits define the mass of the secondaries within an interval of Mmax-Mmin=0.5M☉. NGC 6664 #54 seems to have a rather massive secondary (M>3M☉), but the UBV colours appear normal for a luminous red giant, while significantly bluer (B-V) and (U-B) colours would be expected. It could be a triple system, the secondary being itself a short period binary. This paper brings the number of orbits published in this programme to 53, 45 of which are confirmed red-giant cluster members and 8 are non-members.

Abstract Copyright: ∼

Journal keyword(s): cluster: open - binaries: spectroscopic - stars: fundamental parameters

VizieR on-line data: <Available at CDS (J/A+A/319/481): table3>

CDS comments: p.486: P25 in IC 2488, not in Pedros'list, NGC 2477#1025 = Cl* NGC 2477 HART 1025

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 2477 OpC 07 52 11.0 -38 32 13   6.64 5.8     ~ 290 0
2 NGC 2477 418 SB* 07 52 17.0942858952 -38 30 08.428208148   13.661 12.469     ~ 15 0
3 NGC 2489 OpC 07 56 15.4 -30 03 36   8.58 7.9     ~ 77 0
4 NGC 2489 25 SB* 07 56 20.1149518272 -30 05 00.085754220   13.273 11.937     ~ 9 0
5 NGC 2567 104 SB* 08 18 18.1258654800 -30 40 17.349707208   11.74 10.79     G2 13 0
6 NGC 2567 OpC 08 18 34.8 -30 37 52   7.77 7.4     ~ 91 0
7 IC 2488 OpC 09 27 25.7 -57 00 14           ~ 65 0
8 NGC 3033 12 SB* 09 48 29.1791107128 -56 24 53.041863780   13.94 12.02     ~ 5 0
9 NGC 3033 OpC 09 48 34.8 -56 24 54   9.24 8.8     ~ 53 0
10 NGC 3033 19 SB* 09 48 42.1794884424 -56 22 56.907897960   12.42 11.35     ~ 5 0
11 NGC 5822 OpC 15 04 12.2 -54 21 58           ~ 208 0
12 CD-53 5838 SB* 15 04 14.1717628224 -54 25 47.306503992 12.10 11.35 10.29 9.725   ~ 22 0
13 CPD-54 6305 SB* 15 04 35.9464869984 -54 33 23.802370524 11.28 10.77 9.90 9.384   ~ 9 0
14 NGC 6134 8 SB* 16 27 44.1382859040 -49 09 48.432138120   13.18 11.770     ~ 8 0
15 NGC 6134 OpC 16 27 48.7 -49 09 40   7.89 7.2     ~ 152 0
16 CD-48 10847 SB* 16 27 55.8374470896 -49 08 10.835499912   12.43 11.28     ~ 15 0
17 BD-08 4647 s*y 18 36 25.6805764632 -08 08 34.578054168   12.32 10.33     G8Ib 14 0
18 NGC 6664 OpC 18 36 30.0 -08 11 38   8.81 7.8     ~ 122 0
19 BD-08 4650 s*r 18 36 32.9557818384 -08 15 31.235000472   12.94 10.81     K4Ib 5 0

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