J/A+A/542/A95 9 Sgr spectra 1999-2011 (Rauw+, 2012)
9 Sgr: uncovering an O-type spectroscopic binary with an 8.6 year period.
Rauw G., Sana H., Spano M., Gosset E., Mahy L., De Becker M., Eenens P.
<Astron. Astrophys. 542, A95 (2012)>
=2012A&A...542A..95R 2012A&A...542A..95R
ADC_Keywords: Binaries, spectroscopic ; Spectroscopy
Keywords: stars: early-type - binaries: spectroscopic -
stars: fundamental parameters - stars: massive -
stars: individual: 9 Sgr
Abstract:
The O-type object 9 Sgr is a well-known synchrotron radio emitter.
This feature is usually attributed to colliding-wind binary systems,
but 9 Sgr was long considered a single star.
We have conducted a long-term spectroscopic monitoring of this star to
investigate its multiplicity and search for evidence for wind-wind
interactions.
Description:
The best quality wavelength-calibrated and normalized spectra of 9 Sgr
are provided. These data were obtained with the FEROS, UVES and
Coralie spectrographs. The wavelengths are given in the heliocentric
frame of reference.
Objects:
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RA (2000) DE Designation(s)
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18 03 52.44 -24 21 38.6 9 Sgr = HD 164794
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
files.dat 44 67 List of spectra
sp/* . 67 Individual spectra
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Byte-by-byte Description of file: files.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- FileName Name of the spectrum file in subdirectory sp
14- 26 F13.5 d HJD Observation date of the spectrum
28- 34 A7 --- Inst Instrument used
36- 44 A9 --- Com Comments (blue or red part)
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Byte-by-byte Description of file: sp/*
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Bytes Format Units Label Explanations
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3- 13 E11.5 0.1nm lambda [3769/6867] Wavelength
15- 25 E11.5 -- Flux Normalized flux
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Acknowledgements:
Gregor Rauw, rauw(at)astro.ulg.ac.be
(End) Gregor Rauw [Liege University], Patricia Vannier [CDS] 01-Jun-2012