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 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:
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RA (2000) DE Designation(s)
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05 35 21.8 -04 29 38 V1046 Ori = HD 37017 = HR 1890
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File Summary:
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FileName Lrecl Records Explanations
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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
tables.ps 72 403 PostScript version of the tables
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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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)
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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, priv.com.)
6: 0.8-m Four College Automatic photoelectric telescope, USA
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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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
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Acknowledgements: Petr Harmanec
C. Tom Bolton
(End) Patricia Bauer [CDS] 12-Jun-1998