III/131 Spectroscopic Stellar Abundance Analyses (Koeppen 1988)
A Critical Catalogue of Spectroscopic Stellar Abundance Analyses
Koeppen J.
=1988BICDS..34..143K 1988BICDS..34..143K
ADC_Keywords: Abundances
Description:
The original catalogue (files *.ori) contains condensed descriptions
of all spectroscopic abundance analyses (as far as the metallicity is
derived) are given for normal stars (chemically peculiar stars are not
included). Based on these descriptions, the "best" abundance
determination(s) have been selected and indicated by a quality code.
Index files and software tools are included in the catalog.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 68 730 *The main index of analyzed stars
intro.ori 72 735 Explanations concerning the next files:
hdstars.ori 72 17205 Detailed results about HD stars
dmstars.ori 72 751 Detailed results about Durchmusterung stars
cluster.ori 72 2085 Detailed results about cluster stars not in HD
otherst.ori 72 90 Detailed results Other stars
indexst.ori 72 4864 Indexes
refs.ori 72 2646 References (383), List of stars with extensive
line lists (2227), Some more line lists (37)
programs.ori 72 3733 *Software Tools (FORTRAN programs)
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Note on stars.dat: file created in March 1997 at CDS from indexst.ori
Note on programs.ori: the programs were used to generate the indexes
in 1987 on a mainframe; they were not adapted to PCs or
workstations.
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See also:
III/165 : Catalogue of [Fe/H] determinations (Cayrel et al., 1992)
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- 31 A15 --- SpType Spectral classification
34- 35 I2 h RAh [0/23]? Right Ascension 1950 (hours)
37- 40 F4.1 min RAm [0/60[? Right Ascension 1950 (minutes)
43 A1 --- DE- Declination 1950 (sign)
44- 45 I2 deg DEd [0/90[? Declination 1950 (degrees)
47- 48 I2 arcmin DEm [0/60[? Declination 1950 (minutes)
52- 56 F5.2 mag Vmag ? Visual magnitude (from SIMBAD)
59- 62 A4 --- FeClass *[-+0? ] Iron abundance given in classes (1)
65- 68 A4 --- Qual *[RLI? ()] Quality of best analysis (2)
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Note (1): The iron abundance is given in classes of [Fe/H]
(log(Fe/H) relative to the abundance of the Sun) :
+ [Fe/H] ≥ +0.3 overabundance
0 -0.3 < [Fe/H] ≤ +0.3 solar abund.
- -0.6 < [Fe/H] ≤ -0.3 under abund.
-- -1.0 < [Fe/H] ≤ -0.6 ditto
--- -2.0 < [Fe/H] ≤ -1.0 ditto
---- [Fe/H] ≤ -2.0 ditto
? Fe/H either not determined (e.g. in hot stars) or
the abundances from the available analyses differ
wildly from each other, e.g. in Vega and Deneb.
As a consequence those studies which use such a star
as a reference, also inherit this question mark!
Note (2): the codes are:
R = "RECOMMENDABLE"
State-of-the-art analysis or nearly so:
use of models to take fully into account the temperature
stratification in the atmosphere, use of appropriate
line-blanketing and NLTE-effects where necessary.
Use of the broadest possible observational data, both
in respect of wavelengths (IR...UV where appropriate),
and variety (scans, photometry, line profiles).
L = "LIMITATIONS":
Not quite the best possible analysis by today's(1987)
means. The analysis is recommendable despite some
limitations. Examples:
* using un-blanketed models for cool stars, for which
line-blanketed models are necessary and available;
* using only optical data for hot stars, where the most
important part of the spectrum lies in the ultraviolet;
* using single slab models('coarse analysis') though
model atmospheres are available -- J. Koeppen accepts
only differential studies.
I = "IMPROVEMENT NEEDED":
Analysis with serious limitations, such as:
* absolute curve-of-growth analysis;
* very limited observational base.
Therefore it could be desirable to have this star re-observed
or the data re-analyzed with more modern techniques.
( ) = Brackets indicate that this is the only analysis available
? = Question mark indicates that information about the analysis
method was found to be insufficient to make a definitive
choice of the quality grade, e.g.:
paper mentions analysis only very briefly.
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(End) Joachim Koeppen, Francois Ochsenbein [Strasbourg Obs.] 05-Mar-1997