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J/A+A/520/A73   Light curve of V945 Cen in Geneva photometry (Harmanec+, 2010)

V945 Cen = HD 112409: a bright hot short-period binary in a triple system? Harmanec P., Aerts C., Prsa A., Verhoelst T., Kolenberg K. <Astron. Astrophys. 520, A73 (2010)> =2010A&A...520A..73H
ADC_Keywords: Binaries, eclipsing ; Photometry, Geneva Keywords: binaries: close - stars: variables: general - stars: individual: V945 Cen = HD 112409 Abstract: A detailed analysis of multicolour Geneva photometry and high-resolution echelle spectroscopy of the B8.5V star V945 Cen (HD 112409, V=5.2mag) whose short-term periodic variability was first detected from the HIPPARCOS data, led to the finding that the object is an ellipsoidal variable and a close double-lined spectroscopic binary with a 0.6496d orbital period and a circular orbit. The components have spectral types B7 and B8.5 and are both main-sequence objects. The system is detached but close to a contact configuration and is observed at an inclination of ∼23-24°. A notable finding is that the optical spectrum also contains a third system of spectral lines corresponding to a late B spectral type that remained stationary during the 5 days of spectral observations. From several independent lines of reasoning, we tentatively conclude that the third spectrum belongs to a real third body in the system. However, the possibility that it instead originates in circumbinary gas cannot be excluded completely, and additional spectral and interferometric observations are required to help us determine its origin conclusively. Objects: ------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------ 12 57 04.35 -51 11 55.5 V945 Cen = HR 4913 ------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 53 167 Geneva 7-color photometry of V945 Cen
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 11 F11.3 d HJD Heliocentric Julian date 13- 17 F5.3 mag Vmag Geneva V magnitude 19- 23 F5.3 mag V1mag Geneva V1 magnitude 25- 29 F5.3 mag Bmag Geneva B magnitude 31- 35 F5.3 mag B1mag Geneva B1 magnitude 37- 41 F5.3 mag B2mag Geneva B2 magnitude 43- 47 F5.3 mag Umag Geneva U magnitude 49- 53 F5.3 mag Gmag Geneva G magnitude
Acknowledgements: Petr Harmanec, hec(at)
(End) Patricia Vannier [CDS] 05-Jul-2010
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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