J/AJ/131/2949 Mn abundances in cluster and field stars (Sobeck+, 2006)
Manganese abundances in cluster and field stars.
Sobeck J.S., Ivans I.I., Simmerer J.A., Sneden C., Hoeflich P.,
Fulbright J.P., Kraft R.P.
<Astron. J., 131, 2949-2958 (2006)>
=2006AJ....131.2949S 2006AJ....131.2949S
ADC_Keywords: Abundances ; Clusters, globular ; Stars, population II ;
Effective temperatures
Keywords: Galaxy: abundances - Galaxy: halo - globular clusters: general -
stars: abundances - stars: Population II
Abstract:
We have derived Mn abundances for more than 200 stars in 19 globular
clusters. In addition, Mn abundance determinations have been made for
a comparable number of halo field and disk stars possessing an
overlapping range of metallicities and stellar parameters. Our primary
data set was comprised of high-resolution spectra previously acquired
at the McDonald, Lick, and Keck Observatories. To enlarge our data
pool, we acquired globular and open cluster spectra from several other
investigators. Data were analyzed using synthetic spectra of the
6000Å Mn I triplet. Hyperfine structure parameters were included in
the synthetic spectra computations.
Description:
Three facilities were used for the Lick-Texas Group (LTG)
observations: the KeckI 10.0m telescope equipped with the High
Resolution Echelle Spectrometer (HIRES), the Lick 3.0m telescope
equipped with the Hamilton spectrograph, and the McDonald 2.7m
telescope equipped with the 2d-coude spectrograph. The remainder of
the globular and open cluster spectra were obtained from several
external sources, detailed in Table 12.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table12.dat 46 28 Lick-Texas Group and outside source cluster
observational data
table3.dat 55 349 Lick-Texas Group stellar model parameters and
individual [Fe/H] and [Mn/Fe] values
table4.dat 55 81 External data source stellar model parameters
and individual [Fe/H] and [Mn/Fe] values
refs.dat 65 21 References
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See also:
J/AJ/120/1841 : Abundances and Kinematics of Halo and Disk Stars
(Fulbright, 2000)
J/ApJ/617/1091 : La and Eu abundances in 85 stars (Simmerer+, 2004)
J/AJ/113/279 : Proton Capture Chains. II (Kraft+ 1997)
J/AJ/127/1545 : Abundance ratios of 4 stars in Pal 12 (Cohen+, 2004)
Byte-by-byte Description of file: table12.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Source association
10- 12 A3 --- OName Other group association name
14- 16 I3 --- N* ? Number of program stars (1)
18- 29 A12 --- Inst Instrument (2)
31- 35 A5 --- Ref References, in refs.dat file
37 A1 --- l_S/N [~>] Limit flag on S/N
38- 40 I3 --- S/N ? Signal-to-noise ratio, lower limit if interval
41 A1 --- --- [-]
42- 44 I3 --- S/Nu ? Upper limit of S/N if interval
46 A1 --- n_S/Nu Wavelength concerned by the S/N value (3)
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Note (1): Note that the number of program stars does not always equal those
found in the original paper. In some cases the S/N was too low in a
specified wavelength range to obtain a [Mn/Fe] ratio.
Note (2): Instrument used, defined as follows:
ESO (40) = ESO 3.6 m telescope CASPEC spectrograph with R∼40000;
Keck (34) = KeckI 10.0m telescope HIRES spectrograph with R∼34000;
Keck (45) = KeckI 10.0m telescope HIRES spectrograph with R∼45000;
Lick (30) = pre-1995 configuration of Lick 3.0m telescope Hamilton echelle
with R∼30000;
Lick (50) = current configuration of Lick 3.0m telescope Hamilton echelle
with R∼50000;
McD (30,60) = McDonald 2.7m telescope 2d-coude with R∼30000 or 60000;
CTIO (24) = CTIO 4.0m telescope echelle spectrograph with R∼24000;
CTIO (30) = CTIO 4.0m telescope echelle spectrograph with R∼30000;
VLT (40:60) = VLT UVES spectrograph with R∼40000 or 60000;
APO (34) = APO 3.5m telescope echelle spectrograph with R∼34000.
Note (3): Flag on S/N gives the wavelength, defined as follows:
A = 6300Å;
B = 6350Å;
C = 6363Å;
D = 6460Å;
E = 4100Å;
F = 5500Å.
G = 5865Å;
H = 6700Å;
I = 7500Å.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- Bibcode Bibcode
24- 45 A22 --- Aut Authors
47- 65 A19 --- Com Comment
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Byte-by-byte Description of file: table3.dat table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Source association
10- 12 A3 --- OName Other group association name (1)
14- 21 A8 --- ID Stellar identification within Cluster
23- 26 I4 K Teff Effective temperature
28- 32 F5.2 [cm/s2] log(g) Log of the surface gravity
34- 37 F4.2 km/s VTurb Microturbulent velocity
39- 43 F5.2 [Sun] [Fe/H]L Log of literature Fe/H number abundance
45- 49 F5.2 [Sun] [Fe/H] Log of Lick-Texas group Fe/H number abundance
51- 55 F5.2 [Sun] [Mn/Fe] Log of Lick-Texas group Mn/Fe number abundance
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Note (1): Field stars from the Fulbright (2000, Cat. J/AJ/120/1841) survey
(labeled as JF) have Hipparcos identifications (table 3 only).
Similarly, target stars of the Simmerer et al. (2004, Cat.
J/ApJ/617/1091) survey (designated as JS) have Henry Draper
identifications unless otherwise indicated.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 24-Jun-2008