2003A&A...405..571C


Query : 2003A&A...405..571C

2003A&A...405..571C - Astronomy and Astrophysics, volume 405, 571-575 (2003/7-2)

LSS 1135: An O-type spectroscopic binary in the galactic OB association Bochum 7.

CORTI M., NIEMELA V. and MORRELL N.

Abstract (from CDS):

From radial velocities derived from optical spectroscopic observations performed at CTIO, Chile, and CASLEO, Argentina, we have discovered that LSS 1135 is a single-lined O-type binary system with an orbital period of 2.7532 days. We present an analysis of the orbital elements of this system based on radial velocities of the He absorption lines. We classify the spectrum of LSS 1135 as O6.5V((f)). We also present spectral classifications and radial velocities for other seven OB stars in the region of Bochum 7, an OB association to which LSS 1135 belongs. Our data indicate a distance of 5.0kpc for this star group.

Abstract Copyright:

Journal keyword(s): Galaxy: open clusters and associations: individual: Bochum 7 (Vela OB 3) - stars: binaries: spectroscopic - stars: early-type

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 CD-45 4447 * 08 43 24.1537949616 -46 08 28.658569200 10.76 11.26 10.77 11.02   O7.5V 18 0
2 CD-45 4451 * 08 43 32.3194034976 -45 53 36.418869276 9.96 10.45 10.09 10.14   O7.5V 15 0
3 CPD-45 2920 EB* 08 43 49.8047993256 -46 07 08.757379416 10.6 11.36 10.99 10.91   O6.5V(n)((f)) 36 1
4 CD-45 4462 ** 08 43 51.0870877776 -46 03 46.278754344 11.31 11.87 11.36 11.30   OB- 12 0
5 CD-45 4472 * 08 44 25.0614061680 -45 53 34.556812908 11.45 11.90 11.29 11.21   OB 13 0
6 Cl Bochum 7 OpC 08 44 34 -45 57.1   6.94 6.8     ~ 44 0
7 CD-45 4482 WR* 08 44 47.2901340000 -45 58 55.417387548 10.95 11.29 10.74 10.58   WN8h+? 101 0
8 CPD-45 2961 * 08 44 51.0383617176 -46 10 10.760075112 11.55 12.07 11.53 11.45   OB 11 0
9 CD-45 4494 Em* 08 45 06.4409226072 -46 09 04.631970636 11.57 12.03 11.44 11.21   B1Ve 15 0
10 Ass Vel OB 3 As* ~ ~           ~ 8 0

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2023.02.04-13:13:58

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