J/A+A/560/A106 NLTE spectral analysis of white dwarf G191-B2B (Rauch+, 2013)
The virtual observatory service TheoSSA:
Establishing a database of synthetic stellar flux standards.
I. NLTE spectral analysis of the DA-type white dwarf G191-B2B.
Rauch T., Werner K., Bohlin R., Kruk J.W.
<Astron. Astrophys. 560, A106 (2013)>
=2013A&A...560A.106R 2013A&A...560A.106R
ADC_Keywords: Stars, white dwarf ; Spectroscopy
Keywords: standards - stars: abundances - stars: atmospheres -
stars: individual: G191-B2B - virtual observatory tools -
stars: white dwarfs
Abstract:
Hydrogen-rich, DA-type white dwarfs are particularly suited as primary
standard stars for flux calibration. State-of-the-art NLTE models
consider opacities of species up to trans-iron elements and provide
reliable synthetic stellar-atmosphere spectra to compare with
observation.
We will establish a database of theoretical spectra of stellar flux
standards that are easily accessible via a web interface.
Description:
In the framework of the Virtual Observatory, the German Astrophysical
Virtual Observatory developed the registered service TheoSSA. It
provides easy access to stellar spectral energy distributions (SEDs)
and is intended to ingest SEDs calculated by any model-atmosphere
code. In case of the DA white dwarf G191-B2B, we demonstrate that
the model reproduces not only its overall continuum shape but also the
numerous metal lines exhibited in its ultraviolet spectrum.
Objects:
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RA (2000) DE Designation(s)
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05 05 30.61 +52 49 52.0 G191-B2B = BD+52 913
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 36 1994 Identified lines in the FUSE and STIS
observations of G191-B2B
list.dat 47 4 List of spectra
sp/* . 4 Individual spectrum
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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- 8 F8.3 0.1nm lam.0 [913/1873] Wavelength in stellar rest frame (1)
9- 18 A10 --- Ion Name of ion (2)
19- 29 F11.3 0.1nm lam.th ? Theoretical wavelength (3)
30- 36 A7 --- Comm Comment
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Note (1): wavelength in Å for iron-group elements as given by Kurucz
Note (2): The V, Cr, Mn, and Co line identifications are uncertain.
Note (3): for lines with ISM origin
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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- 10 A10 --- FileName Name of the file in subdirectory sp
14- 47 A34 --- Title Title of the file
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Acknowledgements:
Thomas Rauch, rauch(at)astro.uni-tuebingen.de
(End) Patricia Vannier [CDS] 29-Aug-2013