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J/A+A/337/183     V1046 Ori uvby photometry and radial velocities (Bolton+ 1998)

HD 37017 = V1046 Ori. A double-lined spectroscopic binary with a B2e He-strong magnetic primary Bolton C.T., Harmanec P., Lyons R.W., Odell A.P., Pyper D.M. <Astron. Astrophys. 337, 183 (1998)> =1998A&A...337..183B (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic ; Photometry, uvby ; Radial velocities Keywords: stars: binaries: spectroscopic - stars: fundamental parameters - stars: oscillations - stars: individual: HD 37017 = V1046 Ori Abstract: We report on a detailed spectroscopic and photometric study of V1046 Orionis undertaken to resolve uncertainties about the period(s) and causes of the spectroscopic and photometric variations of this helium-strong star. We have detected the lines of the secondary star in an extensive series of photographic and electronic spectra. This eliminates any doubt about the duplicity of this star. The orbital elements we derive from our measures of these spectra confirm the unusually large orbital eccentricity, e=0.433, for the short, P=18.65612d, orbital period. The line profiles, V/R ratio of the double Hα emission, residuals of the primary radial velocities from the orbital velocity curve, brightness and colour of the object, magnetic field, and radio emission of this system all vary with a period of 0.9011836d. We tentatively follow earlier investigators in interpreting this as the rotational period of the primary and summarize the evidence of the phase shifts among the different phenomena, using the accurate value of the 0.9d period, to put tight constraints on any future model of these changes. We postpone our own attempt at a quantitative modelling of the variations with the 0.9d period for a separate study. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 05 35 21.8 -04 29 38 V1046 Ori = HD 37017 = HR 1890 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 59 77 V1046 Ori individual uvby photometric observations from several stations table5.dat 57 29 V1046 Ori radial velocities measured on David Dunlap photographic spectra tables.tex 82 197 LaTeX version of the tables 72 403 PostScript version of the tables
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 12 F12.4 d HJD Heliocentric Julina date 14- 18 F5.3 mag ymag y magnitude 20- 24 F5.3 mag bmag ? b magnitude 26- 30 F5.3 mag umag u magnitude 32- 36 F5.3 mag vmag ? v magnitude 38- 42 F5.3 mag b-v ? b-v colour index 44- 47 F4.3 mag u-b ? u-b colour index 49- 52 F4.3 mag c1 ? c1 colour index 54- 57 F4.3 mag m1 ? m1 colour index 59 I1 --- Obs Observing station code (1)
Note (1): Numbers in column `Obs" correspond to those in column "Instrument" of Table 2: 1: Catalina station of Lunar and Planetary Lab. Johnson et al. 1966, Cat. II/5 2: 0.5-m reflector, Sutherland, South Africa (Balona, priv. com.) 4: Danish 0.5-m reflector, La Silla (Maitzen, 1981, 6: 0.8-m Four College Automatic photoelectric telescope, USA
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 11 F11.3 d HJD Heliocentric Julian date 13- 17 F5.1 km/s RV1(H+He) Measured radial velocity for mean H+He 19- 23 F5.1 km/s RV1(HeI) Measured radial velocity for HeI 25- 29 F5.1 km/s RV1(He416.9) ? Measured radial velocity for He 416.9 31- 35 F5.1 km/s RV2(MgII) ? Measured radial velocity for Mg II 37- 40 F4.1 km/s RV(CaII) ? Measured radial velocity for Ca II 42- 45 F4.2 nm FWHM Full widths at half maximum of He 447.1 47- 51 F5.3 --- Ic Central intensity of He 447.1 53- 57 F5.3 nm EW Equivalent width of He 447.1
Acknowledgements: Petr Harmanec C. Tom Bolton
(End) Patricia Bauer [CDS] 12-Jun-1998
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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