J/A+A/629/A100 MUSE library of stellar spectra (Ivanov+, 2019)
MUSE library of stellar spectra.
Ivanov V.D., Coccato L., Neeser M.J., Selman F., Pizzella A.,
Dalla Bont E., Corsini E.M., Morelli L.
<Astron. Astrophys. 629, A100 (2019)>
=2019A&A...629A.100I 2019A&A...629A.100I (SIMBAD/NED BibCode)
ADC_Keywords: Atlases ; Stars, nearby ; Spectra, optical
Keywords: standards - atlases - stars: atmospheres - stars: general
Abstract:
Empirical stellar spectral libraries have applications in both
extragalactic and stellar studies, and they confer an advantage over
theoretical libraries because they naturally include all relevant
chemical species and physical processes. In recent years we have seen
a stream of new sets of high-quality spectra, but increasing the
spectral resolution and widening the wavelength coverage means
resorting to multi-order echelle spectrographs. Assembling the spectra
from many pieces results in lower fidelity of their shapes.
We aim to offer the community a library of high-signal-to-noise
spectra with reliable continuum shapes. Furthermore, the use of an
integral field unit (IFU) alleviates the issue of slit losses.
Our library was built with the MUSE (Multi-Unit Spectroscopic
Explorer) IFU instrument. We obtained spectra over nearly the entire
visual band (λ∼4800-9300Å).
We assembled a library of 35 high-quality MUSE spectra for a subset of
the stars from the X-shooter Spectral Library. We verified the
continuum shape of these spectra with synthetic broadband colors
derived from the spectra. We also report some spectral indices from
the Lick system, derived from the new observations.
We offer a high-fidelity set of stellar spectra covering the
Hertzsprung-Russell diagram. These can be used for both extragalactic
and stellar studies and demonstrate that the IFUs are excellent tools
for building reliable spectral libraries.
Description:
The data set contains 35 files, each with a MUSE spectrum of one target
star.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 62 35 List of stars with spectrum
sp/* . 35 Individual spectra
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Star name
17- 18 I2 h RAh Simbad right ascension (J2000)
20- 21 I2 min RAm Simbad right ascension (J2000)
23- 27 F5.2 s RAs Simbad right ascension (J2000)
29 A1 --- DE- Simbad declination sign (J2000)
30- 31 I2 deg DEd Simbad declination (J2000)
33- 34 I2 arcmin DEm Simbad declination (J2000)
36- 39 F4.1 arcsec DEs Simbad declination (J2000)
41- 62 A22 --- FileName Name of the spectrum table in subdirectory sp
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Byte-by-byte Description of file: sp/*
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Bytes Format Units Label Explanations
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1- 9 F9.4 0.1nm lambda Wavelength (Å)
11- 20 E10.5 10-2W/m2/nm Flux Flux (in erg/cm^2/s/Å)
22- 31 E10.5 10-2W/m2/nm e_Flux Flux error (in erg/cm^2/s/Å)
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Acknowledgements:
Valentin Ivanov, vivanov(at)eso.org
(End) Patricia Vannier [CDS] 06-Aug-2019