ADC/CDS Standard Document for Catalog:/journal_tables/A+A/275/101/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/A+A/275/101 The chemical evolution of the galactic disk I. (Edvardsson 1993)
================================================================================
The chemical evolution of the galactic disk I. Analysis and results
Edvardsson B., Andersen J., Gustafsson B., Lambert D.L., Nissen P.E.,
Tomkin J.
<Astron. Astrophys. 275, 101 (1993)>
=1993A&A...275..101E
================================================================================
ADC_Keywords: Abundances ; Equivalent widths ; Stars, ages
Keywords: Galaxy: evolution - Galaxy: structure -
Galaxy: kinematics and dynamics
Stars: abundances - Stars: atmospheres - Stars: fundamental parameters
Description:
From high resolution, high S/N spectroscopic observations of carefully
selected northern and southern stars, abundances of O, Na, Mg, Al, Si,
Ca, Ti, Fe, Ni, Y, Zr, Ba and Nd, as well as photometric ages, are
derived for 189 nearby field F and G stars.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table8.dat 44 86 Atomic line data and solar equivalent
widths
stars.dat 180 189 Fundamental data and chemical abundances
of 14 species for the programme stars
--------------------------------------------------------------------------------
See also:
J/A+AS/102/603 : Chemical evolution of galactic disk II. (Edvardsson+ 1993)
Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Element Line identification: chemical element and
ionization stage
7- 13 F7.2 0.1nm Lambda Wavelength (Angstroms)
15- 19 F5.2 eV E Line excitation energy
21- 25 F5.2 --- log.gf Log gf (oscillator strength)
27- 29 F3.1 --- Factor Enhancement factor to the
"classical van der Waals damping Gamma_6"
31- 36 E6.1 Hz Damping Radiation damping constant
38- 42 F5.1 0.1pm W Solar flux spectrum equivalent width
(milliAngstrom). (1)
44 A1 --- Source for Solar equivalent width:
E=ESO spectrum,
M=McDonald spectrum
--------------------------------------------------------------------------------
Note (1): the measured equivalent widths were corrected for 1%
scattered light by multiplication by the factor 1.01 as
described in Sect.2 of Paper (1993A&AS..102..603E)
Byte-by-byte Description of file: stars.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Star catalogue, HR or HD
11- 14 I4 K Teff Effective temperature
16- 19 F4.2 cm/s2 log.g Logarithmic surface gravity
21- 25 F5.2 --- [Me/H] overall photometric metallicity derived for
the stars, normalized on the Sun
([Me/H] values closer to the resulting
[Fe/H] values were used for the models
of 15 stars, cf. Sect.3.1.1.
[Me/H] values for these 15 are given with
a colon corresponding to parantheses in
the printed version)
26 A1 --- u_[Me/H] Uncertainty flag (:) on Me/H
(Note: values are within parantheses in
the printed version)
27- 32 F6.2 --- [Fe/H] resulting spectroscopic iron abundance
(derived from lines of Fe I),
normalized to the Sun
34- 38 F5.1 pc R Heliocentric distance
40- 45 F6.1 km/s U Heliocentric velocity (U is positive towards
the galactic anti-centre),
47- 52 F6.1 km/s V Heliocentric velocity (V is positive in the
direction of circular motion)
54- 59 F6.1 km/s W Heliocentric velocity (W is positive towards
the galactic north pole)
61- 65 F5.2 kpc Rp Perigalactic distance
67- 71 F5.2 kpc Rm Straight mean of the perigalactic and the
apogalactic distances
73- 76 F4.2 kpc Zmax Maximum distance from the galactic plane
78- 81 F4.2 --- e Orbital eccentricity as projected on the
galactic plane
83- 86 F4.2 Ga log.age Logarithm of the stellar age (in Gigayears)
determined from isochrones
NOTE that this parameter is missing
for 7 stars
88- 90 A3 --- Rem Remarks:
SB = spectroscopic binaries (with possibly
uncertain distances),
pm = stars with uncertainties in proper
motions significantly
above 0.005 arcsecs per year
h = possible hook stars (for which the ages
may be underestimated by 0.15 dex).
92- 96 F5.2 --- [FeI/H] Chemical abundance (normalized to the Sun)
98-102 F5.2 --- [OI/H] Chemical abundance (normalized to the Sun)
104-108 F5.2 --- [NaI/H] Chemical abundance (normalized to the Sun)
110-114 F5.2 --- [MgI/H] Chemical abundance (normalized to the Sun)
116-120 F5.2 --- [AlI/H] Chemical abundance (normalized to the Sun)
122-126 F5.2 --- [SiI/H] Chemical abundance (normalized to the Sun)
128-132 F5.2 --- [CaI/H] Chemical abundance (normalized to the Sun)
134-138 F5.2 --- [TiI/H] Chemical abundance (normalized to the Sun)
140-144 F5.2 --- [FeII/H] Chemical abundance (normalized to the Sun)
146-150 F5.2 --- [NiI/H] Chemical abundance (normalized to the Sun)
152-156 F5.2 --- [YII/H] Chemical abundance (normalized to the Sun)
158-162 F5.2 --- [ZrII/H] Chemical abundance (normalized to the Sun)
164-168 F5.2 --- [BaII/H] Chemical abundance (normalized to the Sun)
170-174 F5.2 --- [NdII/H] Chemical abundance (normalized to the Sun)
176-180 F5.2 --- [alpha/H] = 0.25([Mg/H] + [Si/H] + [Ca/H] + [Ti/H])
--------------------------------------------------------------------------------
================================================================================
(End) [CDS] 18-May-1993