J/AJ/129/1063 Abundances of stars within 15pc of the Sun (Luck+, 2005)
Stars within 15 parsecs: abundances for a northern sample.
Luck R.E., Heiter U.
<Astron. J., 129, 1063-1083 (2005)>
=2005AJ....129.1063L 2005AJ....129.1063L
ADC_Keywords: Abundances ; Stars, nearby
Keywords: stars: abundances
Abstract:
We present an abundance analysis for stars within 15pc of the Sun
located north of -30° declination. We have limited our abundance
sample to absolute magnitudes brighter than +7.5 and have eliminated
several A stars in the local vicinity. Our final analysis list numbers
114 stars. Unlike Allende Prieto et al. (2004, Cat. J/A+A/420/183)
in their consideration of a very similar sample, we have enforced
strict spectroscopic criteria in the determination of atmospheric
parameters. Nevertheless, our results are very similar to theirs. We
determine the mean metallicity of the local region to be
<[Fe/H]≥-0.07 using all stars and -0.04 when interlopers from the
thick disk are eliminated.
Description:
High signal-to-noise spectra were obtained during several observing
runs between 1997 and 2003. For all observations we used the Sandiford
Cassegrain Echelle Spectrograph attached to the 2.1m telescope at
McDonald Observatory. The spectra continuously cover a wavelength
range from about 484 to 700nm, with a resolving power of about 60,000.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 69 118 Sample of 15pc stars
table2.dat 43 267 Observation log
table3.dat 69 38 Parameters and iron abundances, for stars in
common with Heiter & Luck (2003AJ....126.2015H 2003AJ....126.2015H)
table4.dat 60 77 Parameters and iron abundances, for "new" stars
table5.dat 186 114 Abundances for the 15pc sample
table7.dat 57 2917 Detailed abundances for the 15pc sample
--------------------------------------------------------------------------------
See also:
V/32 : Stars within 25 pc of the Sun (Woolley+ 1970)
V/117 : Geneva-Copenhagen Survey of Solar neighbourhood (Nordstrom+, 2004)
J/AJ/121/2189 : Stars within 8 pc of the Sun (Oppenheimer+, 2001)
J/AJ/126/1996 : 100 brightest X-ray stars within 50pc of the Sun
(Makarov+, 2003)
J/A+A/420/183 : Spectroscopic survey in solar neighborhood
(Allende Prieto+ 2004)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD number
9- 12 I4 --- HR ? HR number
13 A1 --- m_HR Multiplicity index on HR number
15- 24 A10 --- SpType MK Spectral type
26- 30 F5.2 mag Vmag V magnitude
32- 35 F4.2 mag B-V ? B-V color index
37- 42 F6.2 mas Plx ? Parallax
44- 48 F5.2 pc d ? Distance
50- 54 F5.2 --- VMAG Absolute V magnitude
56 A1 --- --- [Y] In Heiter & Luck (2003AJ....126.2015H 2003AJ....126.2015H)
58- 69 A12 --- Com Comment
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD number
9- 18 A10 --- Name Star name
20- 23 I4 0.1nm CWave Central wavelength in Angstroms
25- 34 A10 "MM/DD/YYYY" ObsDate Observation date
36- 39 I4 s Exp Exposure time
41- 43 I3 --- S/N Signal to Noise
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD number
9- 12 I4 --- HR ? HR number
13 A1 --- m_HR Multiplicity index on HR number
15- 22 A8 --- SpType MK Spectral type
24- 27 I4 K Teff1 Previous effective temperature (1)
29- 32 F4.2 [cm/s2] logg1 Previous log of the effective surface
gravity (1)
34- 37 F4.2 km/s VTurb1 Previous microturbulent velocity (1)
39- 43 F5.2 [Sun] [Fe/H]1 Previous abundance Fe/H (1)
45- 48 I4 K Teff2 Current effective temperature
50- 53 F4.2 [cm/s2] logg2 Current surface gravity
55- 58 F4.2 km/s VTurb2 Current microturbulent velocity
60- 64 F5.2 [Sun] [Fe/H]2 Current abundance Fe/H
66- 69 F4.2 [Sun] e_[Fe/H]2 Current standard deviation σ
--------------------------------------------------------------------------------
Note (1): From Heiter & Luck, 2003AJ....126.2015H 2003AJ....126.2015H
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD number
9- 12 I4 --- HR ? HR number
13 A1 --- m_HR Multiplicity index on HR number
15- 24 A10 --- SpType MK Spectral type
26- 29 I4 K Teff1 ? Previous effective temperature (1)
31- 34 F4.2 [cm/s2] logg1 ? Previous log of the effective surface
gravity (1)
36- 39 I4 K Teff2 Final effective temperature
41- 44 F4.2 [cm/s2] logg2 Final surface gravity
46- 49 F4.2 km/s VTurb2 Final microturbulent velocity
51- 55 F5.2 [Sun] [Fe/H]2 Final abundance Fe/H
57- 60 F4.2 [Sun] e_[Fe/H]2 Final standard deviation σ
--------------------------------------------------------------------------------
Note (1): From Heiter & Luck, 2003AJ....126.2015H 2003AJ....126.2015H
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD number
9- 18 A10 --- Name Source name
20- 24 F5.2 [Sun] [C/H] ? Mean abundance [C/H]
26- 30 F5.2 [Sun] [O/H] ? Mean abundance [O/H]
32- 36 F5.2 [Sun] [Na/H] ? Mean abundance [Na/H]
38- 42 F5.2 [Sun] [Mg/H] ? Mean abundance [Mg/H]
44- 48 F5.2 [Sun] [Al/H] ? Mean abundance [Al/H]
50- 54 F5.2 [Sun] [Si/H] ? Mean abundance [Si/H]
56- 60 F5.2 [Sun] [S/H] ? Mean abundance [S/H]
62- 66 F5.2 [Sun] [Ca/H] ? Mean abundance [Ca/H]
68- 72 F5.2 [Sun] [Sc/H] ? Mean abundance [Sc/H]
74- 78 F5.2 [Sun] [Ti/H] ? Mean abundance [Ti/H]
80- 84 F5.2 [Sun] [V/H] ? Mean abundance [V/H]
86- 90 F5.2 [Sun] [Cr/H] ? Mean abundance [Cr/H]
92- 96 F5.2 [Sun] [Mn/H] ? Mean abundance [Mn/H]
98-102 F5.2 [Sun] [Fe/H] ? Mean abundance [Fe/H]
104-108 F5.2 [Sun] [Co/H] ? Mean abundance [Co/H]
110-114 F5.2 [Sun] [Ni/H] ? Mean abundance [Ni/H]
116-120 F5.2 [Sun] [Cu/H] ? Mean abundance [Cu/H]
122-126 F5.2 [Sun] [Zn/H] ? Mean abundance [Zn/H]
128-132 F5.2 [Sun] [Sr/H] ? Mean abundance [Sr/H]
134-138 F5.2 [Sun] [Y/H] ? Mean abundance [Y/H]
140-144 F5.2 [Sun] [Zr/H] ? Mean abundance [Zr/H]
146-150 F5.2 [Sun] [Ba/H] ? Mean abundance [Ba/H]
152-156 F5.2 [Sun] [La/H] ? Mean abundance [La/H]
158-162 F5.2 [Sun] [Ce/H] ? Mean abundance [Ce/H]
164-168 F5.2 [Sun] [Pr/H] ? Mean abundance [Pr/H]
170-174 F5.2 [Sun] [Nd/H] ? Mean abundance [Nd/H]
176-180 F5.2 [Sun] [Sm/H] ? Mean abundance [Sm/H]
182-186 F5.2 [Sun] [Eu/H] ? Mean abundance [Eu/H]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD number
9- 18 A10 --- Name Star name
20- 26 F7.2 K Teff Effective temperature
28- 31 F4.2 [cm/s2] log(g) Log of the surface gravity
33- 36 F4.2 km/s VTurb Turbulent velocity
38- 42 A5 --- El Element
44- 48 F5.2 [Sun] log[El/H] ? Log of the mean element abundance
50- 53 F4.2 [Sun] e_log[El/H] ? Standard deviation in Element
55- 57 I3 --- o_log[El/H] ? Number of observations in Element
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 23-Jan-2006