J/A+A/661/A138 Metallicity trend and spread in GCs (Baratella+, 2022)
Prospects of measuring a metallicity trend and spread in globular clusters
from low-resolution spectroscopy.
Baratella M., Prabhu D.S., Lima L., Prugniel P.
<Astron. Astrophys. 661, A138 (2022)>
=2022A&A...661A.138B 2022A&A...661A.138B (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Atomic physics ; Optical
Keywords: methods: data analysis - techniques: spectroscopic -
stars: abundances - stars: fundamental parameters -
globular clusters: individual: NGC 6397
Abstract:
The metallicity spread, or the metallicity trend along the
evolutionary sequence of a globular cluster, is a rich source of
information to help understand the cluster physics (e.g., multiple
populations) and stellar physics (e.g., atomic diffusion).
Low-resolution integral-field-unit spectroscopy in the optical with
the MUSE spectrograph is an attractive prospect if it can provide
these diagnostics because it allows us to efficiently extract spectra
of a large fraction of the cluster stars with only a few telescope
pointings.
We investigate the possibilities of full-spectrum fitting to derive
stellar parameters and chemical abundances at low spectral resolution
(R∼2000).
We reanalysed 1584 MUSE spectra of 1061 stars above the turn-off of
NGC 6397 using FERRE and employing two different synthetic libraries.
We derive the equivalent iron abundance [Fe/H]e for fixed values of
[α/Fe] (solar or enhanced). We find that (i) the interpolation
schema and grid mesh are not critical for the precision, metallicity
spread, and trend; (ii) with the two considered grids, [Fe/H]e
increases by ∼0.2dex along the sub-giant branch, starting from the
turn-off of the main sequence; (iii) restricting the wavelength range
to the optical decreases the precision significantly; and (iv) the
precision obtained with the synthetic libraries is lower than the
precision obtained previously with empirical libraries.
Full-spectrum fitting provides reproducible results that are robust to
the choice of the reference grid of synthetic spectra and to the
details of the analysis. The [Fe/H]e increase along the sub-giant
branch is in stark contrast with the nearly constant iron abundance
previously found with empirical libraries. The precision of the
measurements (0.05dex on [Fe/H]e) is currently not sufficient to
assess the intrinsic chemical abundance spreads, but this may change
with deeper observations. Improvements of the synthetic spectra are
still needed to deliver the full possibilities of full-spectrum
fitting.
Description:
The table contains the atmospheric parameters determined for a sample
of 1061 stars lying above the main sequence turn-off point in the
globular cluster NGC 6397 using spectroscopic observations from
VLT/MUSE. We present a re-analysis of the data which was analysed
previously by Husser et al. (2016A&A...588A.148H 2016A&A...588A.148H, Cat. J/A+A/588/A148)
and then by Jain et al. (2020A&A...635A.161J 2020A&A...635A.161J, Cat. J/A+A/635/A161). We
employ the full-spectrum fitting code FERRE and use two different
synthetic spectral grids for our analysis. The Table provides the
results we obtained in our work for each combination of interpolation,
alpha element pattern, and wavelength range used in the full-spectrum
fitting technique. The effective temperature (Teff) and iron abundance
([Fe/H]) are reported with the respective errors, as well as surface
gravity (logg) and identification (id) from Husser et al.
(2016A&A...588A.148H 2016A&A...588A.148H, Cat. J/A+A/588/A148).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table.dat 1449 1584 *Results
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Note on table.dat: The columns employ a prefix name pattern given the setup used
with FERRE:
for original labels :
{grid}{afe}{specrange}{inter}
and {grid}{afe}{specrange}{inter}_e for errors
(in parenthesis at the end of explanation)
for ReadMe labels
{grid}-{afe}-{spec_range}-{inter}
and e{grid}-{afe}-{specrange}-{inter} for errors
grid - The model grid used, it can be:
g : for GSL
ap : for Allende-Prieto finer grids
apc : for Allende-Prieto coarse grids
afe - alpha elements abundance
spec_range - spectral range used
lg : long range : 475 - 930 nm
md : middle range : 475 - 740 nm
sh : short range : 475 - 580 nm
inter - interpolation schema used
lin : linear
qua : quadratic Bezier
cub : cubic Bezier
--------------------------------------------------------------------------------
See also:
J/A+A/588/A148 : NGC 6397 stars MUSE spectra (Husser+, 2016)
J/A+A/635/A161 : Measured atmospheric parameters of NGC6397 stars (Jain+, 2020)
Byte-by-byte Description of file: table.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 36 A36 --- ID Identification of each star, with
the name convention of H16
(id) (1)
38- 45 F8.3 [cm/s2] loggphot ?=-999.999 The photometric logg
provided by H16 (logg_phot)
47- 54 F8.3 --- g-0d4-lg-lin-feh ?=-999.999 Equivalent metallicity
with GSL, linear interpolation,
alpha/Fe=0.4 and 475-930nm
(g0d4lglinfeh)
56- 63 F8.3 K g-0d4-lg-lin-teff ?=-999.999 Effective temperature
with GSL, linear interpolation,
alpha/Fe=0.4 and 475-930nm
(g0d4lglinteff)
65- 72 F8.3 --- e_g-0d4-lg-lin-feh ?=-999.999 Equivalent metallicity
error with GSL, linear
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lglinfeh_e)
74- 81 F8.3 K e_g-0d4-lg-lin-teff ?=-999.999 Effective temperature
error with GSL, linear
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lglinteff_e)
83- 90 F8.3 --- g-0d4-lg-qua-feh ?=-999.999 Equivalent metallicity
with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lgquafeh)
92- 99 F8.3 K g-0d4-lg-qua-teff ?=-999.999 Effective temperature
with GSL, quadratic interpolation
and alpha/Fe=0.4 and 475-930nm
(g0d4lgquateff
101- 108 F8.3 --- e_g-0d4-lg-qua-feh ?=-999.999 Equivalent metallicity
error with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lgquafeh_e)
110- 117 F8.3 K e_g-0d4-lg-qua-teff ?=-999.999 Effective temperature
error with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lgquateff_e)
119- 126 F8.3 --- g-0d4-lg-cub-feh ?=-999.999 Equivalent metallicity
with GSL, cubic interpolation,
alpha/Fe=0.4 and 475-930nm
(g0d4lgcubfeh)
128- 135 F8.3 K g-0d4-lg-cub-teff ?=-999.999 Effective temperature
with GSL, cubic interpolation,
alpha/Fe=0.4 and 475-930nm
(g0d4lgcubteff)
137- 144 F8.3 --- e_g-0d4-lg-cub-feh ?=-999.999 Equivalent metallicity
error with GSL, cubic
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lgcubfeh_e)
146- 153 F8.3 K e_g-0d4-lg-cub-teff ?=-999.999 Effective temperature
error with GSL, cubic
interpolation, alpha/Fe=0.4 and
475-930nm (g0d4lgcubteff_e)
155- 162 F8.3 --- g-0d4-md-lin-feh ?=-999.999 Equivalent metallicity
with GSL, linear interpolation,
alpha/Fe=0.4 and 475-740nm
(g0d4mdlinfeh)
164- 171 F8.3 K g-0d4-md-lin-teff ?=-999.999 Effective temperature
with GSL, linear interpolation,
alpha/Fe=0.4 and 475-740nm
(g0d4mdlinteff)
173- 180 F8.3 --- e_g-0d4-md-lin-feh ?=-999.999 Equivalent metallicity
error with GSL, linear
interpolation, alpha/Fe=0.4
and 475-740nm
(g0d4mdlinfeh_e)
182- 189 F8.3 K e_g-0d4-md-lin-teff ?=-999.999 Effective temperature
error with GSL, linear
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdlinteff_e)
191- 198 F8.3 --- g-0d4-md-qua-feh ?=-999.999 Equivalent metallicity
with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdquafeh)
200- 207 F8.3 K g-0d4-md-qua-teff ?=-999.999 Effective temperature
with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdquateff)
209- 216 F8.3 --- e_g-0d4-md-qua-feh ?=-999.999 Equivalent metallicity
error with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdquafeh_e)
218- 225 F8.3 K e_g-0d4-md-qua-teff ?=-999.999 Effective temperature
error with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdquateff_e)
227- 234 F8.3 --- g-0d4-md-cub-feh ?=-999.999 Equivalent metallicity
with GSL, cubic interpolation,
alpha/Fe=0.4 and 475-740nm
(g0d4mdcubfeh)
236- 243 F8.3 K g-0d4-md-cub-teff ?=-999.999 Effective temperature
with GSL, cubic interpolation,
alpha/Fe=0.4 and 475-740nm
(g0d4mdcubteff)
245- 252 F8.3 --- e_g-0d4-md-cub-feh ?=-999.999 Equivalent metallicity
error with GSL, cubic
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdcubfeh_e)
254- 261 F8.3 K e_g-0d4-md-cub-teff ?=-999.999 Effective temperature
error with GSL, cubic
interpolation, alpha/Fe=0.4 and
475-740nm (g0d4mdcubteff_e)
263- 270 F8.3 --- g-0d4-sh-lin-feh ?=-999.999 Equivalent metallicity
with GSL, linear interpolation,
alpha/Fe=0.4 and 475-580nm
(g0d4shlinfeh)
272- 279 F8.3 K g-0d4-sh-lin-teff ?=-999.999 Effective temperature
with GSL, linear interpolation,
alpha/Fe=0.4 and 475-580nm
(g0d4shlinteff)
281- 288 F8.3 --- e_g-0d4-sh-lin-feh ?=-999.999 Equivalent metallicity
error with GSL, linear
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shlinfeh_e)
290- 297 F8.3 K e_g-0d4-sh-lin-teff ?=-999.999 Effective temperature
error with GSL, linear
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shlinteff_e)
299- 306 F8.3 --- g-0d4-sh-qua-feh ?=-999.999 Equivalent metallicity
with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shquafeh)
308- 315 F8.3 K g-0d4-sh-qua-teff ?=-999.999 Effective temperature
with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shquateff)
317- 324 F8.3 --- e_g-0d4-sh-qua-feh ?=-999.999 Equivalent metallicity
error with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shquafeh_e)
326- 333 F8.3 K e_g-0d4-sh-qua-teff ?=-999.999 Effective temperature
error with GSL, quadratic
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shquateff_e)
335- 342 F8.3 --- g-0d4-sh-cub-feh ?=-999.999 Equivalent metallicity
with GSL, cubic interpolation,
alpha/Fe=0.4 and 475-580nm
(g0d4shcubfeh)
344- 351 F8.3 K g-0d4-sh-cub-teff ?=-999.999 Effective temperature
with GSL, cubic interpolation,
alpha/Fe=0.4 and 475-580nm
(g0d4shcubteff)
353- 360 F8.3 --- e_g-0d4-sh-cub-feh ?=-999.999 Equivalent metallicity
error with GSL, cubic
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shcubfeh_e)
362- 369 F8.3 K e_g-0d4-sh-cub-teff ?=-999.999 Effective temperature
error with GSL, cubic
interpolation, alpha/Fe=0.4 and
475-580nm (g0d4shcubteff_e)
371- 378 F8.3 --- g-0d0-lg-lin-feh ?=-999.999 Equivalent metallicity
with GSL, linear interpolation,
alpha/Fe=0.0 and 475-930nm
(g0d0lglinfeh)
380- 387 F8.3 K g-0d0-lg-lin-teff ?=-999.999 Effective temperature
with GSL, linear interpolation,
alpha/Fe=0.0 and 475-930nm
(g0d0lglinteff)
389- 396 F8.3 --- e_g-0d0-lg-lin-feh ?=-999.999 Equivalent metallicity
error with GSL, linear
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lglinfeh_e)
398- 405 F8.3 K e_g-0d0-lg-lin-teff ?=-999.999 Effective temperature
error with GSL, linear
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lglinteff_e)
407- 414 F8.3 --- g-0d0-lg-qua-feh ?=-999.999 Equivalent metallicity
with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lgquafeh)
416- 423 F8.3 K g-0d0-lg-qua-teff ?=-999.999 Effective temperature
with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lgquateff)
425- 432 F8.3 --- e_g-0d0-lg-qua-feh ?=-999.999 Equivalent metallicity
error with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lgquafeh_e)
434- 441 F8.3 K e_g-0d0-lg-qua-teff ?=-999.999 Effective temperature
error with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lgquateff_e)
443- 450 F8.3 --- g-0d0-lg-cub-feh ?=-999.999 Equivalent metallicity
with GSL, cubic interpolation,
alpha/Fe=0.0 and 475-930nm
(g0d0lgcubfeh)
452- 459 F8.3 K g-0d0-lg-cub-teff ?=-999.999 Effective temperature
with GSL, cubic interpolation,
alpha/Fe=0.0 and 475-930nm
(g0d0lgcubteff)
461- 468 F8.3 --- e_g-0d0-lg-cub-feh ?=-999.999 Equivalent metallicity
error with GSL, cubic
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lgcubfeh_e)
470- 477 F8.3 K e_g-0d0-lg-cub-teff ?=-999.999 Effective temperature
error with GSL, cubic
interpolation, alpha/Fe=0.0 and
475-930nm (g0d0lgcubteff_e)
479- 486 F8.3 --- g-0d0-md-lin-feh ?=-999.999 Equivalent metallicity
with GSL, linear interpolation,
alpha/Fe=0.0 and 475-740nm
(g0d0mdlinfeh)
488- 495 F8.3 K g-0d0-md-lin-teff ?=-999.999 Effective temperature
with GSL, linear interpolation,
alpha/Fe=0.0 and 475-740nm
(g0d0mdlinteff)
497- 504 F8.3 --- e_g-0d0-md-lin-feh ?=-999.999 Equivalent metallicity
error with GSL, linear
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdlinfeh_e)
506- 513 F8.3 K e_g-0d0-md-lin-teff ?=-999.999 Effective temperature
error with GSL, linear
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdlinteff_e)
515- 522 F8.3 --- g-0d0-md-qua-feh ?=-999.999 Equivalent metallicity
with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdquafeh)
524- 531 F8.3 K g-0d0-md-qua-teff ?=-999.999 Effective temperature
with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdquateff)
533- 540 F8.3 --- e_g-0d0-md-qua-feh ?=-999.999 Equivalent metallicity
error with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdquafeh_e)
542- 549 F8.3 K e_g-0d0-md-qua-teff ?=-999.999 Effective temperature
error with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdquateff_e)
551- 558 F8.3 --- g-0d0-md-cub-feh ?=-999.999 Equivalent metallicity
with GSL, cubic interpolation,
alpha/Fe=0.0 and 475-740nm
(g0d0mdcubfeh)
560- 567 F8.3 K g-0d0-md-cub-teff ?=-999.999 Effective temperature
with GSL, cubic interpolation,
alpha/Fe=0.0 and 475-740nm
(g0d0mdcubteff)
569- 576 F8.3 --- e_g-0d0-md-cub-feh ?=-999.999 Equivalent metallicity
error with GSL, cubic
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdcubfeh_e)
578- 585 F8.3 K e_g-0d0-md-cub-teff ?=-999.999 Effective temperature
error with GSL, cubic
interpolation, alpha/Fe=0.0 and
475-740nm (g0d0mdcubteff_e)
587- 594 F8.3 --- g-0d0-sh-lin-feh ?=-999.999 Equivalent metallicity
with GSL, linear interpolation,
alpha/Fe=0.0 and 475-580nm
(g0d0shlinfeh)
596- 603 F8.3 K g-0d0-sh-lin-teff ?=-999.999 Effective temperature
with GSL, linear interpolation,
alpha/Fe=0.0 and 475-580nm
(g0d0shlinteff)
605- 612 F8.3 --- e_g-0d0-sh-lin-feh ?=-999.999 Equivalent metallicity
error with GSL, linear
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shlinfeh_e)
614- 621 F8.3 K e_g-0d0-sh-lin-teff ?=-999.999 Effective temperature
error with GSL, linear
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shlinteff_e)
623- 630 F8.3 --- g-0d0-sh-qua-feh ?=-999.999 Equivalent metallicity
with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shquafeh)
632- 639 F8.3 K g-0d0-sh-qua-teff ?=-999.999 Effective temperature
with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shquateff)
641- 648 F8.3 --- e_g-0d0-sh-qua-feh ?=-999.999 Equivalent metallicity
error with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shquafeh_e)
650- 657 F8.3 K e_g-0d0-sh-qua-teff ?=-999.999 Effective temperature
error with GSL, quadratic
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shquateff_e)
659- 666 F8.3 --- g-0d0-sh-cub-feh ?=-999.999 Equivalent metallicity
with GSL, cubic interpolation,
alpha/Fe=0.0 and 475-580nm
(g0d0shcubfeh)
668- 675 F8.3 K g-0d0-sh-cub-teff ?=-999.999 Effective temperature
with GSL, cubic interpolation,
alpha/Fe=0.0 and 475-580nm
(g0d0shcubteff)
677- 684 F8.3 --- e_g-0d0-sh-cub-feh ?=-999.999 Equivalent metallicity
error with GSL, cubic
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shcubfeh_e)
686- 693 F8.3 K e_g-0d0-sh-cub-teff ?=-999.999 Effective temperature
error with GSL, cubic
interpolation, alpha/Fe=0.0 and
475-580nm (g0d0shcubteff_e)
695- 702 F8.3 --- ap-0d5-lg-lin-feh ?=-999.999 Equivalent metallicity
with AP, linear interpolation,
alpha/Fe=0.5 and 475-930nm
(ap0d5lglinfeh)
704- 711 F8.3 K ap-0d5-lg-lin-teff ?=-999.999 Effective temperature
with AP, linear interpolation,
alpha/Fe=0.5 and 475-930nm
(ap0d5lglinteff)
713- 720 F8.3 --- e_ap-0d5-lg-lin-feh ?=-999.999 Equivalent metallicity
error with AP, linear
interpolation, alpha/Fe=0.5 and
475-930nm (ap0d5lglinfeh_e)
722- 729 F8.3 K e_ap-0d5-lg-lin-teff ?=-999.999 Effective temperature
error with AP, linear
interpolation, alpha/Fe=0.5 and
475-930nm (ap0d5lglinteff_e)
731- 738 F8.3 --- ap-0d5-lg-qua-feh ?=-999.999 Equivalent metallicity
with AP, quadratic interpolation,
alpha/Fe=0.5 and 475-930nm
(ap0d5lgquafeh)
740- 747 F8.3 K ap-0d5-lg-qua-teff ?=-999.999 Effective temperature
with AP, quadratic interpolation,
alpha/Fe=0.5 and 475-930nm
(ap0d5lgquateff)
749- 756 F8.3 --- e_ap-0d5-lg-qua-feh ?=-999.999 Equivalent metallicity
error with AP, quadratic
interpolation, alpha/Fe=0.5 and
475-930nm (ap0d5lgquafeh_e)
758- 765 F8.3 K e_ap-0d5-lg-qua-teff ?=-999.999 Effective temperature
error with AP, quadratic
interpolation, alpha/Fe=0.5 and
475-930nm (ap0d5lgquateff_e)
767- 774 F8.3 --- ap-0d5-lg-cub-feh ?=-999.999 Equivalent metallicity
with AP, cubic interpolation,
alpha/Fe=0.5 and 475-930nm
(ap0d5lgcubfeh)
776- 783 F8.3 K ap-0d5-lg-cub-teff ?=-999.999 Effective temperature
with AP, cubic interpolation,
alpha/Fe=0.5 and 475-930nm
(ap0d5lgcubteff)
785- 792 F8.3 --- e_ap-0d5-lg-cub-feh ?=-999.999 Equivalent metallicity
error with AP, cubic
interpolation, alpha/Fe=0.5 and
475-930nm (ap0d5lgcubfeh_e)
794- 801 F8.3 K e_ap-0d5-lg-cub-teff ?=-999.999 Effective temperature
error with AP, cubic
interpolation, alpha/Fe=0.5 and
475-930nm (ap0d5lgcubteff_e)
803- 810 F8.3 --- ap-0d5-md-lin-feh ?=-999.999 Equivalent metallicity
with AP, linear interpolation,
alpha/Fe=0.5 and 475-740nm
(ap0d5mdlinfeh)
812- 819 F8.3 K ap-0d5-md-lin-teff ?=-999.999 Effective temperature
with AP, linear interpolation,
alpha/Fe=0.5 and 475-740nm
(ap0d5mdlinteff)
821- 828 F8.3 --- e_ap-0d5-md-lin-feh ?=-999.999 Equivalent metallicity
error with AP, linear
interpolation, alpha/Fe=0.5 and
475-740nm (ap0d5mdlinfeh_e)
830- 837 F8.3 K e_ap-0d5-md-lin-teff ?=-999.999 Effective temperature
error with AP, linear
interpolation, alpha/Fe=0.5 and
475-740nm (ap0d5mdlinteff_e)
839- 846 F8.3 --- ap-0d5-md-qua-feh ?=-999.999 Equivalent metallicity
with AP, quadratic interpolation,
alpha/Fe=0.5 and 475-740nm
(ap0d5mdquafeh)
848- 855 F8.3 K ap-0d5-md-qua-teff ?=-999.999 Effective temperature
with AP, quadratic interpolation,
alpha/Fe=0.5 and 475-740nm
(ap0d5mdquateff)
857- 864 F8.3 --- e_ap-0d5-md-qua-feh ?=-999.999 Equivalent metallicity
error with AP, quadratic
interpolation, alpha/Fe=0.5 and
475-740nm (ap0d5mdquafeh_e)
866- 873 F8.3 K e_ap-0d5-md-qua-teff ?=-999.999 Effective temperature
error with AP, quadratic
interpolation, alpha/Fe=0.5 and
475-740nm (ap0d5mdquateff_e)
875- 882 F8.3 --- ap-0d5-md-cub-feh ?=-999.999 Equivalent metallicity
with AP, cubic interpolation,
alpha/Fe=0.5 and 475-740nm
(ap0d5mdcubfeh)
884- 891 F8.3 K ap-0d5-md-cub-teff ?=-999.999 Effective temperature
with AP, cubic interpolation,
alpha/Fe=0.5 and 475-740nm
(ap0d5mdcubteff)
893- 900 F8.3 --- e_ap-0d5-md-cub-feh ?=-999.999 Equivalent metallicity
error with AP, cubic
interpolation, alpha/Fe=0.5 and
475-740nm (ap0d5mdcubfeh_e)
902- 909 F8.3 K e_ap-0d5-md-cub-teff ?=-999.999 Effective temperature
error with AP, cubic
interpolation, alpha/Fe=0.5 and
475-740nm (ap0d5mdcubteff_e)
911- 918 F8.3 --- ap-0d5-sh-lin-feh ?=-999.999 Equivalent metallicity
with AP, linear interpolation,
alpha/Fe=0.5 and 475-580nm
(ap0d5shlinfeh)
920- 927 F8.3 K ap-0d5-sh-lin-teff ?=-999.999 Effective temperature
with AP, linear interpolation,
alpha/Fe=0.5 and 475-580nm
(ap0d5shlinteff)
929- 936 F8.3 --- e_ap-0d5-sh-lin-feh ?=-999.999 Equivalent metallicity
error with AP, linear
interpolation, alpha/Fe=0.5 and
475-580nm (ap0d5shlinfeh_e)
938- 945 F8.3 K e_ap-0d5-sh-lin-teff ?=-999.999 Effective temperature
error with AP, linear
interpolation, alpha/Fe=0.5 and
475-580nm (ap0d5shlinteff_e)
947- 954 F8.3 --- ap-0d5-sh-qua-feh ?=-999.999 Equivalent metallicity
with AP, quadratic interpolation,
alpha/Fe=0.5 and 475-580nm
(ap0d5shquafeh)
956- 963 F8.3 K ap-0d5-sh-qua-teff ?=-999.999 Effective temperature
with AP, quadratic interpolation,
alpha/Fe=0.5 and 475-580nm
(ap0d5shquateff)
965- 972 F8.3 --- e_ap-0d5-sh-qua-feh ?=-999.999 Equivalent metallicity
error with AP, quadratic
interpolation, alpha/Fe=0.5 and
475-580nm (ap0d5shquafeh_e)
974- 981 F8.3 K e_ap-0d5-sh-qua-teff ?=-999.999 Effective temperature
error with AP, quadratic
interpolation, alpha/Fe=0.5 and
475-580nm (ap0d5shquateff_e)
983- 990 F8.3 --- ap-0d5-sh-cub-feh ?=-999.999 Equivalent metallicity
with AP, cubic interpolation,
alpha/Fe=0.5 and 475-580nm
(ap0d5shcubfeh)
992- 999 F8.3 K ap-0d5-sh-cub-teff ?=-999.999 Effective temperature
with AP, cubic interpolation,
alpha/Fe=0.5 and 475-580nm
(ap0d5shcubteff)
1001-1008 F8.3 --- e_ap-0d5-sh-cub-feh ?=-999.999 Equivalent metallicity
error with AP, cubic
interpolation, alpha/Fe=0.5 and
475-580nm (ap0d5shcubfeh_e)
1010-1017 F8.3 K e_ap-0d5-sh-cub-teff ?=-999.999 Effective temperature
error with AP, cubic
interpolation, alpha/Fe=0.5 and
475-580nm (ap0d5shcubteff_e)
1019-1026 F8.3 --- ap-0d0-lg-lin-feh ?=-999.999 Equivalent metallicity
with AP, linear interpolation,
alpha/Fe=0.0 and 475-930nm
(ap0d0lglinfeh)
1028-1035 F8.3 K ap-0d0-lg-lin-teff ?=-999.999 Effective temperature
with AP, linear interpolation,
alpha/Fe=0.0 and 475-930nm
(ap0d0lglinteff)
1037-1044 F8.3 --- e_ap-0d0-lg-lin-feh ?=-999.999 Equivalent metallicity
error with AP, linear
interpolation, alpha/Fe=0.0 and
475-930nm (ap0d0lglinfeh_e)
1046-1053 F8.3 K e_ap-0d0-lg-lin-teff ?=-999.999 Effective temperature
error with AP, linear
interpolation, alpha/Fe=0.0 and
475-930nm (ap0d0lglinteff_e)
1055-1062 F8.3 --- ap-0d0-lg-qua-feh ?=-999.999 Equivalent metallicity
with AP, quadratic interpolation,
alpha/Fe=0.0 and 475-930nm
(ap0d0lgquafeh)
1064-1071 F8.3 K ap-0d0-lg-qua-teff ?=-999.999 Effective temperature
with AP, quadratic interpolation,
alpha/Fe=0.0 and 475-930nm
(ap0d0lgquateff)
1073-1080 F8.3 --- e_ap-0d0-lg-qua-feh ?=-999.999 Equivalent metallicity
error with AP, quadratic
interpolation, alpha/Fe=0.0 and
475-930nm (ap0d0lgquafeh_e)
1082-1089 F8.3 K e_ap-0d0-lg-qua-teff ?=-999.999 Effective temperature
error with AP, quadratic
interpolation, alpha/Fe=0.0 and
475-930nm (ap0d0lgquateff_e)
1091-1098 F8.3 --- ap-0d0-lg-cub-feh ?=-999.999 Equivalent metallicity
with AP, cubic interpolation,
alpha/Fe=0.0 and 475-930nm
(ap0d0lgcubfeh)
1100-1107 F8.3 K ap-0d0-lg-cub-teff ?=-999.999 Effective temperature
with AP, cubic interpolation,
alpha/Fe=0.0 and 475-930nm
(ap0d0lgcubteff)
1109-1116 F8.3 --- e_ap-0d0-lg-cub-feh ?=-999.999 Equivalent metallicity
error with AP, cubic
interpolation, alpha/Fe=0.0 and
475-930nm (ap0d0lgcubfeh_e)
1118-1125 F8.3 K e_ap-0d0-lg-cub-teff ?=-999.999 Effective temperature
error with AP, cubic
interpolation, alpha/Fe=0.0 and
475-930nm (ap0d0lgcubteff_e)
1127-1134 F8.3 --- ap-0d0-md-lin-feh ?=-999.999 Equivalent metallicity
with AP, linear interpolation,
alpha/Fe=0.0 and 475-740nm
(ap0d0mdlinfeh)
1136-1143 F8.3 K ap-0d0-md-lin-teff ?=-999.999 Effective temperature
with AP, linear interpolation,
alpha/Fe=0.0 and 475-740nm
(ap0d0mdlinteff)
1145-1152 F8.3 --- e_ap-0d0-md-lin-feh ?=-999.999 Equivalent metallicity
error with AP, linear
interpolation, alpha/Fe=0.0 and
475-740nm (ap0d0mdlinfeh_e)
1154-1161 F8.3 K e_ap-0d0-md-lin-teff ?=-999.999 Effective temperature
error with AP, linear
interpolation, alpha/Fe=0.0 and
475-740nm (ap0d0mdlinteff_e)
1163-1170 F8.3 --- ap-0d0-md-qua-feh ?=-999.999 Equivalent metallicity
with AP, quadratic interpolation,
alpha/Fe=0.0 and 475-740nm
(ap0d0mdquafeh)
1172-1179 F8.3 K ap-0d0-md-qua-teff ?=-999.999 Effective temperature
with AP, quadratic interpolation,
alpha/Fe=0.0 and 475-740nm
(ap0d0mdquateff)
1181-1188 F8.3 --- e_ap-0d0-md-qua-feh ?=-999.999 Equivalent metallicity
error with AP, quadratic
interpolation, alpha/Fe=0.0 and
475-740nm (ap0d0mdquafeh_e)
1190-1197 F8.3 K e_ap-0d0-md-qua-teff ?=-999.999 Effective temperature
error with AP, quadratic
interpolation, alpha/Fe=0.0 and
475-740nm (ap0d0mdquateff_e)
1199-1206 F8.3 --- ap-0d0-md-cub-feh ?=-999.999 Equivalent metallicity
with AP, cubic interpolation,
alpha/Fe=0.0 and 475-740nm
(ap0d0mdcubfeh)
1208-1215 F8.3 K ap-0d0-md-cub-teff ?=-999.999 Effective temperature
with AP, cubic interpolation,
alpha/Fe=0.0 and 475-740nm
(ap0d0mdcubteff)
1217-1224 F8.3 --- e_ap-0d0-md-cub-feh ?=-999.999 Equivalent metallicity
error with AP, cubic
interpolation, alpha/Fe=0.0 and
475-740nm (ap0d0mdcubfeh_e)
1226-1233 F8.3 K e_ap-0d0-md-cub-teff ?=-999.999 Effective temperature
error with AP, cubic
interpolation, alpha/Fe=0.0 and
475-740nm (ap0d0mdcubteff_e)
1235-1242 F8.3 --- ap-0d0-sh-lin-feh ?=-999.999 Equivalent metallicity
with AP, linear interpolation,
alpha/Fe=0.0 and 475-580nm
(ap0d0shlinfeh)
1244-1251 F8.3 K ap-0d0-sh-lin-teff ?=-999.999 Effective temperature
with AP, linear interpolation,
alpha/Fe=0.0 and 475-580nm
(ap0d0shlinteff)
1253-1260 F8.3 --- e_ap-0d0-sh-lin-feh ?=-999.999 Equivalent metallicity
error with AP, linear
interpolation, alpha/Fe=0.0 and
475-580nm (ap0d0shlinfeh_e)
1262-1269 F8.3 K e_ap-0d0-sh-lin-teff ?=-999.999 Effective temperature
error with AP, linear
interpolation, alpha/Fe=0.0 and
475-580nm (ap0d0shlinteff_e)
1271-1278 F8.3 --- ap-0d0-sh-qua-feh ?=-999.999 Equivalent metallicity
with AP, quadratic interpolation,
alpha/Fe=0.0 and 475-580nm
(ap0d0shquafeh)
1280-1287 F8.3 K ap-0d0-sh-qua-teff ?=-999.999 Effective temperature
with AP, quadratic interpolation,
alpha/Fe=0.0 and 475-580nm
(ap0d0shquateff)
1289-1296 F8.3 --- e_ap-0d0-sh-qua-feh ?=-999.999 Equivalent metallicity
error with AP, quadratic
interpolation, alpha/Fe=0.0 and
475-580nm (ap0d0shquafeh_e)
1298-1305 F8.3 K e_ap-0d0-sh-qua-teff ?=-999.999 Effective temperature
error with AP, quadratic
interpolation, alpha/Fe=0.0 and
475-580nm (ap0d0shquateff_e)
1307-1314 F8.3 --- ap-0d0-sh-cub-feh ?=-999.999 Equivalent metallicity
with AP, cubic interpolation,
alpha/Fe=0.0 and 475-580nm
(ap0d0shcubfeh)
1316-1323 F8.3 K ap-0d0-sh-cub-teff ?=-999.999 Effective temperature
with AP, cubic interpolation,
alpha/Fe=0.0 and 475-580nm
(ap0d0shcubteff)
1325-1332 F8.3 --- e_ap-0d0-sh-cub-feh ?=-999.999 Equivalent metallicity
error with AP, cubic
interpolation, alpha/Fe=0.0 and
475-580nm (ap0d0shcubfeh_e)
1334-1341 F8.3 K e_ap-0d0-sh-cub-teff ?=-999.999 Effective temperature
error with AP, cubic
interpolation, alpha/Fe=0.0 and
475-580nm (ap0d0shcubteff_e)
1343-1350 F8.3 --- apc-0d5-lg-lin-feh ?=-999.999 Equivalent metallicity
with APC, linear interpolation,
alpha/Fe=0.5 and 475-930nm
(apc0d5lglinfeh)
1352-1359 F8.3 K apc-0d5-lg-lin-teff ?=-999.999 Effective temperature
with APC, linear interpolation,
alpha/Fe=0.5 and 475-930nm
(apc0d5lglinteff)
1361-1368 F8.3 --- e_apc-0d5-lg-lin-feh ?=-999.999 Equivalent metallicity
error with APC, linear
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lglinfeh_e)
1370-1377 F8.3 K e_apc-0d5-lg-lin-teff ?=-999.999 Effective temperature
error with APC, linear
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lglinteff_e)
1379-1386 F8.3 --- apc-0d5-lg-qua-feh ?=-999.999 Equivalent metallicity
with APC, quadratic
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lgquafeh)
1388-1395 F8.3 K apc-0d5-lg-qua-teff ?=-999.999 Effective temperature
with APC, quadratic
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lgquateff)
1397-1404 F8.3 --- e_apc-0d5-lg-qua-feh ?=-999.999 Equivalent metallicity
error with APC, quadratic
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lgquafeh_e)
1406-1413 F8.3 K e_apc-0d5-lg-qua-teff ?=-999.999 Effective temperature
error with APC, quadratic
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lgquateff_e)
1415-1422 F8.3 --- apc-0d5-lg-cub-feh ?=-999.999 Equivalent metallicity
with APC, cubic interpolation,
alpha/Fe=0.5 and 475-930nm
(apc0d5lgcubfeh)
1424-1431 F8.3 K apc-0d5-lg-cub-teff ?=-999.999 Effective temperature
with APC, cubic interpolation,
alpha/Fe=0.5 and 475-930nm
(apc0d5lgcubteff)
1433-1440 F8.3 --- e_apc-0d5-lg-cub-feh ?=-999.999 Equivalent metallicity
error with APC, cubic
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lgcubfeh_e)
1442-1449 F8.3 K e_apc-0d5-lg-cub-teff ?=-999.999 Effective temperature
error with APC, cubic
interpolation, alpha/Fe=0.5 and
475-930nm (apc0d5lgcubteff_e)
--------------------------------------------------------------------------------
Note (1): ID as ngc6397idNNNNNNNNNjdNNNNNNNpNNNNfNNN, where
ID is the name of the fits spectrum file,
ngc6397idNNNNNNNNNjdNNNNNNNpNNNNfNNN.fits,
and idNNNNNNNNN corresponds to the star identification number
of Husser et al., 2016A&A...588A.148H 2016A&A...588A.148H, Cat. J/A+A/588/A148
--------------------------------------------------------------------------------
Acknowledgements:
Martina Baratella, mbaratella(at)aip.de
(End) L. Alberico [Univ. Cidade de Sao Paulo], P. Vannier [CDS] 15-Mar-2022