J/A+A/593/A112 LHA 120-S 73 optical and NIR spectra (Kraus+, 2016)
Inhomogeneous molecular ring around the B[e] supergiant LHA 120-S 73.
Kraus M., Cidale L.S., Arias M.L., Maravelias G., Nickeler D.H.,
Torres A.F., Fernandes M.Borges , Aret A., Cure M., Vallverdu R., Barba R.H.
<Astron. Astrophys. 593, A112 (2016)>
=2016A&A...593A.112K 2016A&A...593A.112K (SIMBAD/NED BibCode)
ADC_Keywords: Stars, emission ; Stars, supergiant ; Line Profiles ;
Spectroscopy ; Spectra, infrared
Keywords: circumstellar matter - stars: early-type - supergiants -
stars: individual: LHA 120-S 73 - infrared: stars
Abstract:
B[e] supergiants are evolved massive stars, enshrouded in a dense wind
and surrounded by a molecular and dusty disk. The mechanisms that
drive phases of enhanced mass loss and mass ejections, responsible for
the shaping of the circumstellar material of these objects, are still
unclear.
We aim to improve our knowledge on the structure and dynamics of the
circumstellar disk of the Large Magellanic Cloud B[e] supergiant
LHA 120-S 73.
High-resolution optical and near-infrared spectroscopic data were
obtained over a period of 16 and 7 yr, respectively. The spectra cover
the diagnostic emission lines from [CaII] and [OI], as well as
the CO bands. These features trace the disk at different distances
from the star. We analyzed the kinematics of the individual emission
regions by modeling their emission profiles. A low-resolution
mid-infrared spectrum was obtained as well, which provides information
on the composition of the dusty disk.
Description:
Optical and infrared spectroscopic data of the B[e] supergiant star
LHA 120-S 73 in the Large Magellanic Cloud have been obtained during
different season using various telescopes and instruments. The data
were reduced and telluric correction as well as correction with
respect to heliocentric and the systemic velocity of 261km/s were
performed. Provided are the infrared spectra and the emission lines in
the optical region that were discussed in the paper.
Objects:
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RA (2000) DE Designation(s)
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04 56 47.08 -69 50 24.8 LHA 120-S 73 = HD 268835
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 56 48 List of spectra
spn/* . 3 NIR Phoenix spectra
spt/* . 1 MIR T-ReCS spectrum
sph/* . 20 H-lines spectra
spo/* . 24 [OI], [CaII], HeI and TiO spectra
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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- 20 A20 --- Title Title of the spectrum file
22- 31 A10 "date" Obs.date Observation date
33- 36 I4 --- Nlines Number of lines in the spectrum file
38- 53 A16 --- FileName Name of the spectrum file
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Byte-by-byte Description of file: spn/*
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Bytes Format Units Label Explanations
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1- 7 F7.5 um lambda Wavelength
8- 21 F14.10 -- NFlux Normalized flux
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Byte-by-byte Description of file: spt/*
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Bytes Format Units Label Explanations
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1- 9 F9.3 um lambda Wavelength
10- 19 F10.3 Jy Flux Flux calibrated spectrum
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Byte-by-byte Description of file: sph/*
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Bytes Format Units Label Explanations
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1- 16 F16.10 km/s Vrad Radial velocity
17- 32 F16.10 -- NFlux Normalized flux
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Byte-by-byte Description of file: spo/*
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Bytes Format Units Label Explanations
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1- 16 F16.10 0.1nm lambda Wavelength
17- 32 F16.10 -- NFlux Normalized flux
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Acknowledgements:
Michaela Kraus, kraus(at)sunstel.asu.cas.cz
(End) Michaela Kraus [Ondrejov Observatory], Patricia Vannier [CDS] 28-Jun-2016