J/ApJS/266/11 Stellar sp. libraries in Opt-NIR. I. UVES-POP (Borisov+, 2023)
New generation stellar spectral libraries in the optical and near-infrared.
I. The recalibrated UVES-POP library for stellar population synthesis.
Borisov S.B., Chilingarian I.V., Rubtsov E.V., Ledoux C., Melo C.,
Grishin K.A., Katkov I.Y., Goradzhanov V.S., Afanasiev A.V.,
Kasparova A.V., Saburova A.S.
<Astrophys. J. Suppl. Ser., 266, 11 (2023)>
=2023ApJS..266...11B 2023ApJS..266...11B
ADC_Keywords: Spectra, optical; Stars, ages; Stars, masses; Abundances;
Radial velocities; Rotational velocities; Spectral types
Keywords: Stellar atmospheres ; Stellar abundances ;
Stellar effective temperatures ; Stellar populations ;
Astronomy databases ; Star atlases ; Astronomical reference materials
Abstract:
We present reprocessed flux-calibrated spectra of 406 stars from the
UVES-POP stellar library in the wavelength range 320-1025nm, which can
be used for stellar population synthesis. The spectra are provided in
the two versions having spectral resolving power R=20000 and R=80000.
Raw spectra from the ESO data archive were re-reduced using the latest
version of the UVES data reduction pipeline with some additional
algorithms that we developed. The most significant improvements in
comparison with the original UVES-POP release are (i) an updated
echelle order merging, which eliminates "ripples" present in the
published spectra; (ii) a full telluric correction; (iii) merging of
nonoverlapping UVES spectral setups taking into account the global
continuum shape; (iv) a spectrophotometric correction and absolute
flux calibration; and (v) estimates of the interstellar extinction.
For 364 stars from our sample, we computed atmospheric parameters
Teff, surface gravity logg, metallicity [Fe/H], and α-element
enhancement [α/Fe] by using a full-spectrum fitting technique
based on a grid of synthetic stellar atmospheres and a novel
minimization algorithm. We also provide projected rotational velocity
vsini and radial velocity vrad estimates. The overall absolute flux
uncertainty in the reprocessed data set is better than 2%, with
subpercent accuracy for about half of the stars. A comparison of the
recalibrated UVES-POP spectra with other spectral libraries shows a
very good agreement in flux; at the same time, Gaia DR3 BP/RP spectra
are often discrepant with our data, which we attribute to
spectrophotometric calibration issues in Gaia DR3.
Description:
The original Ultraviolet and Visual Echelle Spectrograph Paranal
Observatory Project (UVES-POP) stellar spectral library
(Bagnulo+ 2003Msngr.114...10B 2003Msngr.114...10B) contains spectra of around 400 stars
with a resolving power of R=80000. The stars were observed with UVES
using a 0.5"-wide slit in two instrument modes, combining Dichroic #1
and Dichroic #2, in order to cover the wavelength range from 300 to
1040nm contiguously with only a few narrow gaps. Observations were
carried out between 2001 February and 2003 March under ESO program
266.D-5655(A). We selected all stars from the UVES ESO archive for
that program and downloaded the original unprocessed data.
In total, the new recalibrated UVES-POP library contains spectra of
406 stars, 262 of which have spectra covering the full optical
wavelength range.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table6.dat 611 406 Spectrum fitting results
sp/* . 812 Individual recalibrated UVES-POP spectra
in FITS format at R20000 and R80000
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See also:
B/pastel : The PASTEL catalogue (Soubiran+, 2016-)
B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)
II/84 : 13-color photometry of 1380 bright stars (Johnson+ 1975)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
III/218 : ELODIE archive (Prugniel+, 2001)
III/232 : STELIB: A library of stellar spectra at R∼2000 (Le Borgne+, 2003)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/A+AS/146/217 : Library of Spectra (0.5-2.5um) of Cool Stars (Lancon+ 2000)
J/A+A/407/1157 : UVES sky atlas (Hanuschik+, 2003)
J/A+A/418/551 : Gal. disk stars abundances and velocities (Mishenina+, 2004)
J/ApJS/152/251 : Indo-US library of coude feed stellar sp. (Valdes+, 2004)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/A+A/523/A48 : Gaia photometry (Jordi+, 2010)
J/MNRAS/404/1639 : MILES base models & new line index system (Vazdekis+, 2010)
J/A+A/565/A117 : X-Shooter Spectral Library (XSL). DR1 (Chen+, 2014)
J/ApJ/836/77 : A library of high-S/N optical sp. of FGKM stars (Yee+, 2017)
J/A+A/616/A10 : 46 open clusters GaiaDR2 HR diag. (Gaia Collaboration, 2018)
J/A+A/627/A138 : XSL atmospheric parameters (Arentsen+, 2019)
J/ApJ/883/175 : The MaNGA Stellar Library (MaStar) release 1 (Yan+, 2019)
J/A+A/634/A133 : X-Shooter Spectral Library (XSL). DR2 (Gonneau+, 2020)
J/MNRAS/506/150 : The GALAH+ Survey DR3 (Buder+, 2021)
J/A+A/660/A34 : X-Shooter Spectral Library (XSL). DR3 (Verro+, 2022)
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- Name UVES-POP identifier
14- 25 A12 --- SName SIMBAD identifier (1)
27- 32 A6 --- HD HD identifier
34- 37 I4 --- HR [6/9103]? HR identifier
39- 44 I6 --- HIP [154/117629]? Hipparcos identifier
46- 56 A11 --- TYC Tycho identifier
58- 76 I19 --- GaiaDR2 ? Gaia DR2 identifier
78- 96 I19 --- GaiaDR3 ? Gaia DR3 identifier
98- 179 A82 --- urlr20 Link to download the spectrum R=20000
with analysis results
181- 265 A85 --- urlr80 Link to download the spectrum R=80000
267- 276 F10.6 deg RAdeg Simbad Right Ascension (J2000)
278- 286 F9.5 deg DEdeg Simbad Declination (J2000)
288- 310 A23 "datime" Date Full date and time of observation
(YYYY-MM-DDThh:mm:ss.sss)
312- 318 F7.2 s Exptime [0.5/3600] Total integration time
320- 339 A20 --- SpClass Spectral class
341- 347 F7.5 Msun Mass [0.6/8.9]? Stellar mass
349- 355 F7.5 Msun e_Mass [0.0003/1.2]? Uncertainty in mass
357- 364 F8.5 Gyr Age [0.0001/13.8]? Stellar age
366- 372 F7.5 Gyr e_Age [9e-05/3]? Uncertainty in age
374- 379 F6.4 mag ebv [0.001/0.5]? Color excess E(B-V) from fit
381- 385 F5.3 mag e_ebv [0.03/0.3]? Uncertainty in ebv
387- 392 F6.4 mag ebv-map [0.009/1.6]? Color excess E(B-V) from
DUSTMAPS (2018JOSS....3..695G 2018JOSS....3..695G)
394 I1 --- Nseg [1/6] Number of segments of spectrum
396 I1 --- Var [0/1] Variance flag; true/false
398- 406 A9 --- GCVS GCVS identifier
408- 410 A3 --- gcvs-n GCVS indicator
412- 417 A6 --- gcvs-Type Type of variance from GCVS
419- 425 F7.2 d gcvs-Per [0.01/2335]? Period of variance from GCVS
427- 435 A9 --- gcvs-Name Name of variance from GCVS
437- 444 F8.3 km/s RVel [-171.1/284.2]? Radial velocity
446- 450 F5.3 km/s e_RVel [0.1/8.6]? Uncertainty in RVel
452- 458 F7.3 km/s vsini [0.16/321.3]? Projection of the rotation
velocity
460- 465 F6.3 km/s e_vsini [0/19]? Uncertainty in vsini
467- 473 F7.1 K Teff [2892/69670]? Effective temperature
475- 480 F6.1 K e_Teff [33/1140]? Uncertainty in Teff
482- 488 F7.4 [cm/s2] log(g) [-0.5/5.1]? Log surface gravity
490- 494 F5.3 [cm/s2] e_log(g) [0.03/0.8]? Uncertainty in log (g)
496- 502 F7.4 [Sun] [Fe/H] [-3.1/1]? Metallicity
504- 508 F5.3 [Sun] e_[Fe/H] [0.03/0.5]? Uncertainty in [Fe/H]
510- 516 F7.4 [Sun] [a/Fe] [-0.4/1.2]? Log Alpha-elements abundance
relative to Fe
518- 522 F5.3 [Sun] e_[a/Fe] [0.03/0.8]? Uncertainty in [a/Fe]
524- 532 F9.4 --- chi2dof [1/2608]? Normalized χ2
534 I1 km/s lit-v ? Radial velocity from literature (2)
536 I1 km/s e_lit-v ? Uncertainty in lit-v (2)
538- 542 F5.1 km/s lit-vsini [4.4/250]? Projection of the rotation
velocity from literature
544- 548 F5.1 km/s e_lit-vsini [4.4/250]? Uncertainty in lit-vsini
550- 556 F7.1 K lit-teff [2830/89000]? Effective temperature from
literature
558- 563 F6.1 K e_lit-teff [100/2000]? Uncertainty in lit-teff
565- 569 F5.3 [cm/s2] lit-log(g) [0/5]? Surface gravity from literature
571- 574 F4.2 [cm/s2] e_lit-log(g) [0.05/1]? Uncertainty in lit-log (g)
576- 582 F7.4 [Sun] lit-[Fe/H] [-2.32/0.9]? Metallicity [Fe/H] from
literature
584- 587 F4.2 [Sun] e_lit-[Fe/H] [0.05/0.3]? Uncertainty in lit-[Fe/H]
589 I1 [Sun] lit-[a/Fe] ? Alpha-elements abundance relative to
Fe from literature (2)
591 I1 [Sun] e_lit-[a/Fe] ? Uncertainty in lit-[a/Fe] (2)
593- 611 A19 --- lit-ref Literary source bibcode of measurements
--------------------------------------------------------------------------------
Note (1): Few cross-identifications are really likely incorrect:
NGC6475-JJ08 is not HD 320755; NGC6475-JJ10 is not CD-34 12148 and
NGC6475-JJ22 is not CD-34 12160. Note added by CDS.
Note (2): These columns have no values for any row.
--------------------------------------------------------------------------------
Acknowledgements:
Maria Messineo [maria.messineo2 at unibo.it]
History:
From electronic version of the journal (spectra downloaded from URLs)
18-Sep-2023: Insert into VizieR
* 07-Oct-2024: Column SimbadName updated (thanks to M. Messineo) and
Note on col. SName added.
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 27-Jul-2023