2005A&A...437..769B

Query : 2005A&A...437..769B

2005A&A...437..769B - Astronomy and Astrophysics, volume 437, 769-774 (2005/7-2)

Photometric study of the eclipsing binary V1034 Sco.

BOUZID M.Y., STERKEN C. and PRIBULLA T.

Abstract (from CDS):

We present multi-colour Stroemgren photometry of the eclipsing binary V1034 Sco in the galactic open cluster NGC 6231, providing for the first time a full coverage of the orbital period (P=2.44-days) and a complete analysis of the orbit. This extensive new photometry was analyzed together with multiband spectroscopy and results in an improved ephemeris, photometric elements and absolute parameters of the components. The system is close, but clearly detached. The masses of the components M1=16.8±0.5M☉ and M2=9.4±0.3M☉ do not correspond to the published spectral classification (O9III + B1III). The parameters of the components are consistent with the main-sequence luminosity class. We independently derive a distance modulus V0-MV=10.73±0.02.

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Journal keyword(s): instrumentation: photometers - binaries: eclipsing - methods: data analysis - methods: observational - techniques: photometric - Hertzspring-Russell and C-M diagrams

Simbad objects: 11

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Number of rows : 11
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 CD-41 11027A Y*? 16 54 06.7182176904 -41 51 06.979097448 8.108 8.848 8.720   8.439 O9.7V 34 0
2 CD-41 11032 SB* 16 54 06.9496123464 -41 49 23.360333088 8.93 9.60 9.512 10.81 9.256 B0.5V 40 0
3 CPD-41 7727 SB* 16 54 09.2737061088 -41 48 41.072216580 8.964 9.564 9.424   9.134 B1V 37 0
4 HD 152248 Y*O 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 259 0
5 NGC 6231 OpC 16 54 10.8 -41 48 43           ~ 538 0
6 CD-41 11034 Y*? 16 54 11.3119116264 -41 48 53.965557072 8.878 9.546 9.335 9.744 8.943 B1V 42 0
7 Cl* NGC 6231 SS 90 Y*O 16 54 13.0608704424 -41 49 17.478418656 11.422 11.784 11.537   11.159 ~ 6 0
8 NGC 6231 236 Y*? 16 54 14.7168894120 -41 51 11.012092416 11.199 11.614 11.385   11.020 B2.5V 18 0
9 NGC 6231 365 Y*? 16 54 19.5344073660 -41 50 10.340626026   12.23 12.215   11.737 ~ 11 0
10 CD-41 11042 Y*O 16 54 19.8364084848 -41 50 09.378605616 7.733 9.02 8.80 9.23 7.859 O9.5IV 101 0
11 HD 326332 Y*O 16 54 35.8130819496 -41 50 12.216189984 9.275 9.903 9.669 9.96 9.275 B2IVe+ 51 0

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