J/A+A/420/183 Spectroscopic survey in solar neighborhood (Allende Prieto+ 2004)
S4N: A Spectroscopic Survey of Stars in the Solar Neighborhood.
Allende Prieto C., Barklem P.S., Lambert D.L., Cunha K.
<Astron. Astrophys. 420, 183 (2004)>
=2004A&A...420..183A 2004A&A...420..183A
ADC_Keywords: Stars, nearby ; Spectroscopy ; Radial velocities ; Abundances
Space velocities ; Proper motions ; Parallaxes, trigonometric
Keywords: surveys - stars: fundamental parameters - stars: abundances -
Galaxy: solar neighbourhood
Abstract:
We report the results of a high-resolution spectroscopic survey of all
the stars more luminous than MV=6.5mag within 14.5pc from the Sun.
The Hipparcos catalog's completeness limits guarantee that our survey
is comprehensive and free from some of the selection effects in other
samples of nearby stars. The resulting spectroscopic database, which
we have made publicly available, includes spectra for 118 stars
obtained with a resolving power of R∼50000, continuous spectral
coverage between ∼362-921nm, and typical signal-to-noise ratios in the
range 150-600. We derive stellar parameters and perform a preliminary
abundance and kinematic analysis of the F-G-K stars in the sample. The
inferred metallicity ([Fe/H]) distribution is centered at about
-0.1dex, and shows a standard deviation of 0.2dex.
Description:
Tables with kinematic data and chemical abundances for the
sample. The atomic line data are also provided.
The data in FITS are available in the internet from the project site
S4N (Spectrsocopic Survey of Stars in the Solar Neighborhood) at
http://hebe.as.utexas.edu/s4n/ and at its mirror
http://www.astro.uu.se/~s4n/
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 66 119 Stellar parameters
table3.dat 191 118 Kinematics
table4.dat 62 275 Atomic line data
table5.dat 467 118 Chemical abundances
sp/* . 119 Individual spectra (including the Sun)
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
http://hebe.as.utexas.edu/s4n : S4N Home page
http://www.astro.uu.se/~s4n : S4N Home page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number (0 stands for the Sun)
9- 12 I4 K Teff ? Effective temperature
15- 17 I3 K e_Teff ? Mean error on Teff
19- 23 F5.3 [cm/s2] logg ? Surface Gravity
25- 29 F5.3 [cm/s2] e_logg ? Mean error on logg
32- 35 F4.2 [] [Fe/H] ? Metallicity (H=12)
38- 41 F4.2 km/s xi ? Microturbulence velocity
44- 48 F5.2 km/s eta ? Macroturbulence velocity
50- 66 A17 --- spFile Name of spectrum file, in subdirectory "sp"
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number (Cat. I/239)
8- 15 F8.4 deg RAdeg Right ascension (ICRS J1991.25)
17- 24 F8.4 deg DEdeg Declination (ICRS J1991.25)
26- 33 F8.4 mas Plx Trigonometric parallax
35- 44 F10.4 mas/yr pmRA Proper motion in RA*cos(DE)
46- 55 F10.4 mas/yr pmDE Proper motion in DE
57- 66 F10.4 km/s RV ?=-1000 Radial velocity
68- 77 F10.4 km/s Uvel ?=-1000 U galactic velocity
79- 88 F10.4 km/s Vvel ?=-1000 V galactic velocity
90- 99 F10.4 km/s Wvel ?=-1000 W galactic velocity
101-111 E11.5 deg e_RAdeg Uncertainty in RA
113-123 E11.5 deg e_DEdeg Uncertainty in DE
125-131 F7.4 mas e_Plx Uncertainty in Plx
133-139 F7.4 mas/yr e_pmRA Uncertainty in pmRA
141-147 F7.4 mas/yr e_pmDE Uncertainty in pmDE
149-158 F10.4 km/s e_RV ?=-1000 Uncertainty in RV
160-169 F10.4 km/s e_Uvel ?=-1000 Uncertainty in Uvel
171-180 F10.4 km/s e_Vvel ?=-1000 Uncertainty in Vvel
182-191 F10.4 km/s e_Wvel ?=-1000 Uncertainty in Wvel
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Index Index
6- 7 I2 --- Z Atomic number
10 I1 --- Ion [1/2] Ionization stage
(1=neutral, 2=singly ionized)
14- 23 F10.4 0.1nm Lambda Central wavelength
27- 31 F5.3 eV EP Lower excitation potential
34- 39 F6.3 --- log(gf) Decimal logarithm of the product (g*f)
41- 45 F5.0 2.8x10-21m2 sigma H-collision broadening cross-section
in atomic units (1)
47- 51 F5.3 --- alpha Velocity parameter alpha (2)
54- 62 E9.3 rad/s Gammarad FWHM for Natural broadening (3)
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Note (1): When sigma set to unity and alpha to zero,
Unsold's approximation is used.
Note (2): alpha is defined as σ(V)=σ(Vo)(V/Vo)-α,
where V is the velocity and sigma the cross-section.
Note (3): When set to unity, natural broadening is neglected
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number (Cat. I/239)
8 A1 --- l_[C/H] Limit flag on [O/H]
9- 16 F8.2 [Sun] [C/H] ?=-1000.00 [C/H] abundance (1)
18 A1 --- l_[O/H] Limit flag on [O/H]
19- 26 F8.2 [Sun] [O/H] ?=-1000.00 [O/H] abundance (1)
28- 35 F8.2 [Sun] [Mg/H] ?=-1000.00 [Mg/H] abundance (1)
37- 44 F8.2 [Sun] [Si/H] ?=-1000.00 [Si/H] abundance (1)
46- 53 F8.2 [Sun] [Ca/H] ?=-1000.00 [Ca/H] abundance (1)
55- 62 F8.2 [Sun] [Sc/H] ?=-1000.00 [Sc/H] abundance (1)
64- 71 F8.2 [Sun] [Ti/H] ?=-1000.00 [Ti/H] abundance (1)
73- 80 F8.2 [Sun] [Fe/H] ?=-1000.00 [Fe/H] abundance (1)
82- 89 F8.2 [Sun] [Co/H] ?=-1000.00 [Co/H] abundance (1)
91- 98 F8.2 [Sun] [Ni/H] ?=-1000.00 [Ni/H] abundance (1)
100-107 F8.2 [Sun] [Cu/H] ?=-1000.00 [Cu/H] abundance (1)
109-116 F8.2 [Sun] [Zn/H] ?=-1000.00 [Zn/H] abundance (1)
118-125 F8.2 [Sun] [Y/H] ?=-1000.00 [Y/H] abundance (1)
127-134 F8.2 [Sun] [Ba/H] ?=-1000.00 [Ba/H] abundance (1)
136-143 F8.2 [Sun] [Ce/H] ?=-1000.00 [Ce/H] abundance (1)
145-152 F8.2 [Sun] [Nd/H] ?=-1000.00 [Nd/H] abundance (1)
154-161 F8.2 [Sun] [Eu/H] ?=-1000.00 [Eu/H] abundance (1)
163-170 F8.2 [Sun] e_[C/H] ?=-1000.00 Internal uncertainty in [C/H] (2)
172-179 F8.2 [Sun] e_[O/H] ?=-1000.00 Internal uncertainty in [O/H] (2)
181-188 F8.2 [Sun] e_[Mg/H] ?=-1000.00 Internal uncertainty in [Mg/H] (2)
190-197 F8.2 [Sun] e_[Si/H] ?=-1000.00 Internal uncertainty in [Si/H] (2)
199-206 F8.2 [Sun] e_[Ca/H] ?=-1000.00 Internal uncertainty in [Ca/H] (2)
208-215 F8.2 [Sun] e_[Sc/H] ?=-1000.00 Internal uncertainty in [Sc/H] (2)
217-224 F8.2 [Sun] e_[Ti/H] ?=-1000.00 Internal uncertainty in [Ti/H] (2)
226-233 F8.2 [Sun] e_[Fe/H] ?=-1000.00 Internal uncertainty in [Fe/H] (2)
235-242 F8.2 [Sun] e_[Co/H] ?=-1000.00 Internal uncertainty in [Co/H] (2)
244-251 F8.2 [Sun] e_[Ni/H] ?=-1000.00 Internal uncertainty in [Ni/H] (2)
253-260 F8.2 [Sun] e_[Cu/H] ?=-1000.00 Internal uncertainty in [Cu/H] (2)
262-269 F8.2 [Sun] e_[Zn/H] ?=-1000.00 Internal uncertainty in [Zn/H] (2)
271-278 F8.2 [Sun] e_[Y/H] ?=-1000.00 Internal uncertainty in [Y/H] (2)
280-287 F8.2 [Sun] e_[Ba/H] ?=-1000.00 Internal uncertainty in [Ba/H] (2)
289-296 F8.2 [Sun] e_[Ce/H] ?=-1000.00 Internal uncertainty in [Ce/H] (2)
298-305 F8.2 [Sun] e_[Nd/H] ?=-1000.00 Internal uncertainty in [Nd/H] (2)
307-314 F8.2 [Sun] e_[Eu/H] ?=-1000.00 Internal uncertainty in [Eu/H] (2)
316-323 F8.2 [Sun] D[C/H] ?=-1000.00 Change in [C/H] (3)
325-332 F8.2 [Sun] D[O/H] ?=-1000.00 Change in [O/H] (3)
334-341 F8.2 [Sun] D[Mg/H] ?=-1000.00 Change in [Mg/H] (3)
343-350 F8.2 [Sun] D[Si/H] ?=-1000.00 Change in [Si/H] (3)
352-359 F8.2 [Sun] D[Ca/H] ?=-1000.00 Change in [Ca/H] (3)
361-368 F8.2 [Sun] D[Sc/H] ?=-1000.00 Change in [Sc/H] (3)
370-377 F8.2 [Sun] D[Ti/H] ?=-1000.00 Change in [Ti/H] (3)
379-386 F8.2 [Sun] D[Fe/H] ?=-1000.00 Change in [Fe/H] (3)
388-395 F8.2 [Sun] D[Co/H] ?=-1000.00 Change in [Co/H] (3)
397-404 F8.2 [Sun] D[Ni/H] ?=-1000.00 Change in [Ni/H] (3)
406-413 F8.2 [Sun] D[Cu/H] ?=-1000.00 Change in [Cu/H] (3)
415-422 F8.2 [Sun] D[Zn/H] ?=-1000.00 Change in [Zn/H] (3)
424-431 F8.2 [Sun] D[Y/H] ?=-1000.00 Change in [Y/H] (3)
433-440 F8.2 [Sun] D[Ba/H] ?=-1000.00 Change in [Ba/H] (3)
442-449 F8.2 [Sun] D[Ce/H] ?=-1000.00 Change in [Ce/H] (3)
451-458 F8.2 [Sun] D[Nd/H] ?=-1000.00 Change in [Nd/H] (3)
460-467 F8.2 [Sun] D[Eu/H] ?=-1000.00 Change in [Eu/H] (3)
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Note (1): The bracket notation for the abundance of an element 'El'
relative to the solar value is used throughout:
[El/H]=log10{N(El)/N(H)}-log10{N(El)/N(H)}sun
with N=number density.
This is set to -1000.00 when the abundance is not available.
Note (2): When more than one transition is used, e(El) corresponds to
the standard deviation. It is set to zero when only one line was
employed.
A value -1000.00 indicates that the abundance is not available.
Note (3): D(El) is the change in [El/H] when the effective temperature
is increased by 3*sigma (see Tables 2-4 in the paper).
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Acknowledgements: C. Allende Prieto
(End) Patricia Bauer [CDS] 05-Mar-2004