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J/A+A/495/231       Multiwavelength study of Cyg OB2 5           (Linder+, 2009)

A multiwavelength investigation of the massive eclipsing binary Cyg OB2 #5. Linder N., Rauw G., Manfroid J., Damerdji Y., De Becker M., Eenens P., Royer P., Vreux J.-M. <Astron. Astrophys. 495, 231 (2009)> =2009A&A...495..231L
ADC_Keywords: Binaries, eclipsing ; Photometry, CCD Keywords: stars: binaries: close - stars: binaries: eclipsing - stars: early-type - stars: distances - stars: winds, outflows Abstract: The properties of the early-type binary Cyg OB2 #5 have been debated for many years and spectroscopic and photometric investigations yielded conflicting results. We have attempted to constrain the physical properties of the binary by collecting new optical and X-ray observations. The optical light curves obtained with narrow-band continuum and line-bearing filters are analysed and compared. Optical spectra are used to map the location of the He II 4686 and H-alpha line-emission regions in velocity space. New XMM-Newton as well as archive X-ray spectra are analysed to search for variability and constrain the properties of the hot plasma in this system. Description: Photometric time series in different narrow-band filters are given for the eclipsing binary systems Cyg OB2 #5 = V729 Cyg = BD+40 4220. The data were obtained with the CCD camera at the 1.2m telescope at the Observatoire de Haute Provence. Objects: ------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------- 20 32 22.4 +41 18 19 Cyg OB2 #5 = V* V729 Cyg ------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 32 1282 Photometric time series of Cyg OB2 #5
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Filter Filter Name (c1, c2, HeII, CIV, HeI) (1) 6- 17 F12.4 d HJD Heliocentric Julian Day 19- 25 F7.4 mag mag Magnitude in Filter 27- 32 F6.4 mag e_mag Uncertainty on the magnitude
Note (1): Narrow-band filters designed for the study of WR stars (Royer et al. 1998A&AS..130..407R). The central wavelength are in Å(0.1nm): c1=5057 c2=6051 HeII=4686 CIV=5801-5812, HeI=5876.
Acknowledgements: Gregor Rauw, rauw(at)astro.ulg.ac.be
(End) Gregor Rauw [IAGL, Belgium], Patricia Vannier [CDS] 19-Dec-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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