J/A+A/586/A35 TZ For OIFITS files (Gallenne+, 2016)
The Araucaria Project: High-precision orbital parallax and masses of the
eclipsing binary TZ Fornacis.
Gallenne A., Pietrzyski G., Graczyk D., Konorski P., Kervella P.,
Merand A., Gieren W., Anderson R.I., Villanova S.
<Astron. Astrophys. 586, A35 (2016)>
=2016A&A...586A..35G 2016A&A...586A..35G (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Interferometry
Keywords: stars: fundamental parameters - techniques: spectroscopic -
binaries: close - techniques: interferometric - binaries: eclipsing
Abstract:
Independent distance estimates are particularly useful to check the
precision of other distance indicators, while accurate and precise
masses are necessary to constrain evolution models.
The goal is to measure the masses and distance of the detached
eclipsing-binary TZ For with a precision level lower than 1% using a
fully geometrical and empirical method.
We obtained the first interferometric observations of TZ For with the
VLTI/PIONIER combiner, which we combined with new and precise radial
velocity measurements to derive its three-dimensional orbit, masses,
and distance.
Description:
We collected high-resolution echelle spectra from the instruments
Euler/CORALIE and 3.6m/HARPS located at La Silla Observatory (Chile).
We used the Very Large Telescope Interferometer (VLTI) with the
four-telescope combiner PIONIER to measure the squared visibilities
and the closure phases.
Our observations were spanned during the ESO period P94 using the 1.8m
Auxiliary Telescopes with the configuration K0-A1-G1-J3 (baselines of
57, 80, 91, 129, 132, and 140m) and K0-A1-G1-I1 (baselines of 47, 47,
80, 90, 107, and 129m), providing six projected baselines ranging
from 40 to 140m.
Objects:
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RA (2000) DE Designation(s)
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02 54 30.28 -28 24 01.6 TX For = V* TX For
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 113 11 List of OIFITS files
oifits/* . 11 Individual OIFITS files
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.6 deg RAdeg OI target right ascension (J2000)
11- 19 F9.5 deg DEdeg OI target declination (J2000)
21- 24 I4 km EffWave1 First Effective wavelength
26- 29 I4 km EffWave2 Second Effective wavelength
31- 34 I4 km EffWave3 Third Effective wavelength
36- 39 I4 km EffWave4 ? Fourth Effective wavelength
41- 44 I4 km EffWave5 ? Fith Effective wavelength
46- 49 I4 km EffWave6 ? sixth Effective wavelength
51- 54 F4.1 km EffBand Effective band
56- 65 A10 "date" ObsDate Observation date
67- 69 I3 Kibyte size Size of the file
71-113 A43 --- FileName Name of the OIFITS file in subdirectory oifits
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Acknowledgements:
Alexandre Gallenne, agallenne(at)astro-udec.cl
(End) Patricia Vannier [CDS] 20-Nov-2015