J/AJ/142/59 Chemical abundance in 10 open clusters (Jacobson+, 2011)
A chemical abundance study of 10 open clusters based on WIYN.
Jacobson H.R., Pilachowski C.A., Friel E.D.
<Astron. J., 142, 59 (2011)>
=2011AJ....142...59J 2011AJ....142...59J
ADC_Keywords: Clusters, open ; Abundances
Keywords: Galaxy: abundances - Galaxy: disk - open clusters and associations:
individual (M 67, NGC 188, NGC 1245, NGC 1817, NGC 2158, NGC 2194,
NGC 2355, NGC 2420, NGC 2425, NGC 7789) - stars: abundances
Abstract:
We present a detailed chemical abundance study of evolved stars in 10
open clusters based on Hydra multi-object echelle spectra obtained
with the WIYN 3.5m telescope. From an analysis of both equivalent
widths and spectrum synthesis, abundances have been determined for the
elements Fe, Na, O, Mg, Si, Ca, Ti, Ni, Zr, and for two of the 10
clusters, Al and Cr. To our knowledge, this is the first detailed
abundance analysis for clusters NGC 1245, NGC 2194, NGC 2355, and NGC
2425.
Description:
The majority of the observations were obtained with the Hydra fiber
positioner and bench spectrograph on the WIYN 3.5m telescope from
2006 December through 2008 December.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 82 10 Clusters observed
table3.dat 113 341 Stellar targets
abund.dat 149 159 Atmospheric parameters & Fe abundances, α
and other element abundances (tables 5, 8, 9)
aratio.dat 165 159 The α and other element abundance ratios
(tables 10 and 11)
table12.dat 118 10 Mean cluster [X/H] ratios
table13.dat 107 10 Mean cluster [X/Fe] ratios
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See also:
J/AJ/118/2894 : NGC 188 UBVRI CCD photometry (Sarajedini+, 1999)
J/A+A/357/471 : BV and proper motions in NGC 1960 + NGC 2194 (Sanner+, 2000)
J/A+A/426/827 : ubvyHbeta photometry in NGC 1817/1807 (Balaguer-Nunez+, 2004)
J/AJ/131/461 : Stromgren photometry of NGC 2420 (Anthony-Twarog+, 2006)
J/MNRAS/365/110 : CCD BVI photometry of 3 open clusters (Pietrukowicz+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 11 F5.1 deg GLON Galactic longitude
13- 17 F5.1 deg GLAT Galactic latitude
19- 23 F5.3 mag E(B-V) Redenning
25- 29 F5.3 mag e_E(B-V) ? rms uncertainty on E(B-V)
31- 32 I2 --- Ref Reference for cluster reddening and/or
distance (1)
34- 37 F4.2 kpc Dist Heliocentric distance
39- 42 F4.2 kpc e_Dist rms uncertainty on Dist
44- 48 F5.2 kpc Rgc Galactocentric radius (R☉=8.5kpc)
50- 53 F4.2 kpc e_Rgc rms uncertainty on Rgc
55- 58 I4 kpc Z Height above the plane
60- 62 I3 kpc e_Z rms uncertainty on Z
64- 65 I2 --- r_Z Reference (1)
67- 69 F3.1 Gyr Age Age, adopted from Salaris et al.
(2004A&A...414..163S 2004A&A...414..163S)
70 A1 --- n_Age [d] d if Age from Pietrukowicz et al.
(2006, Cat. J/MNRAS/365/110)
72- 73 I2 --- N* Number of stats studied in the cluster
75- 82 A8 --- Name Simbad cluster name
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Note (1): References as follows:
1 = Anthony-Twarog et al., 2006, Cat. J/AJ/131/461
2 = Balaguer-Nunez et al., 2004, Cat. J/A+A/426/827
3 = Burke et al., 2004AJ....127.2382B 2004AJ....127.2382B
4 = Gim et al., 1998PASP..110.1318G 1998PASP..110.1318G
5 = Grochalski & Sarajedini, 2002AJ....123.1603G 2002AJ....123.1603G
6 = Pietrukowicz et al., 2006, Cat. J/MNRAS/365/110
7 = Sanner et al., 2000, Cat. J/A+A/357/471
8 = Sarajedini et al., 1999, Cat. J/AJ/118/2894
9 = Soubiran et al., 2000A&A...357..484S 2000A&A...357..484S
10 = this study
11 = Twarog et al., 1997AJ....114.2556T 1997AJ....114.2556T
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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- 5 A5 --- Cluster Cluster name
7- 11 I5 --- Star Star number within the cluster,
identification used this study (1)
13- 16 A4 --- ID Alternate identification (1)
18- 19 I2 h RAh ? Hour of Right Ascension (J2000)
21- 22 I2 min RAm ? Minute of Right Ascension (J2000)
24- 28 F5.2 s RAs ? Second of Right Ascension (J2000)
30 A1 --- DE- ? Sign of the Declination (J2000)
31- 32 I2 deg DEd ? Degree of Declination (J2000)
34- 35 I2 arcmin DEm ? Arcminute of Declination (J2000)
37- 41 F5.2 arcsec DEs ? Arcsecond of Declination (J2000)
42- 43 I2 h RABh ? Hour of Right Ascension (B1950) (2)
45- 46 I2 min RABm ? Minute of Right Ascension (B1950) (2)
48- 52 F5.2 s RABs ? Second of Right Ascension (B1950) (2)
54 A1 --- DEB- ? Sign of the Declination (B1950) (2)
55- 56 I2 deg DEBd ? Degree of Declination (B1950) (2)
58- 59 I2 arcmin DEBm ? Arcminute of Declination (B1950) (2)
61- 65 F5.2 arcsec DEBs ? Arcsecond of Declination (B1950) (2)
66- 71 F6.3 mag Vmag ? V band magnitude
73- 77 F5.3 mag B-V ? The (B-V) color index (except for
NGC 1817 stars, where the color is b-y)
78 A1 --- n_B-V [*] * when (b-y) color index in B-V
(for NGC 1817 stars)
80- 84 F5.3 mag V-K ? The (V-K) color index
86- 90 F5.3 mag J-K ? The (J-K) color index
92- 94 I3 --- S/N Signal-to-noise ratio
96-101 F6.1 km/s RV ? Radial velocity
103 A1 --- f_RV [h] Indicates a hot star in RV
105-113 A9 --- Memb Membership (M, M?, NM, ?) and remarks (binarity,
rot=fast rotating hot star)
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Note (1): See individual cluster summaries in Appendix A for sources.
Note (2): only for NGC 7789 stars.
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Byte-by-byte Description of file: abund.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 11 I5 --- Star Star number within the cluster
14- 17 I4 K Teff ? Effective temperature
19- 21 F3.1 [cm/s2] log(g) ? Log of the surface gravity
23- 25 F3.1 km/s Vturb ? Microturbulent velocity ξ
27- 30 F4.2 [Sun] FeI ? Log FeI number abundance relative to solar
32- 35 F4.2 [Sun] e_FeI ? The 1σ uncertainty in FeI
37- 38 I2 --- o_FeI ? Number of lines used to derive FeI
40- 44 F5.2 [Sun] Fe/H ? Log Fe/H number abundance ratio
46- 49 F4.2 [Sun] FeII ? Log FeII number abundance relative to solar
51- 54 F4.2 [Sun] e_FeII ? The 1σ uncertainty in FeII
56 I1 --- o_FeII ? Number of lines used to derive FeII
58- 61 F4.2 [Sun] Mg ? Log Mg number abundance relative to solar
63- 66 F4.2 [Sun] Si Log Si number abundance relative to solar
68- 71 F4.2 [Sun] e_Si ? The 1σ uncertainty in Si
73 I1 --- o_Si Number of lines used to derive Si
75- 78 F4.2 [Sun] Ca ? Log Ca number abundance relative to solar
79 A1 --- f_Ca [*] Ca determination includes lines >150mÅ
81- 84 F4.2 [Sun] e_Ca ? The 1σ uncertainty in Ca
86 I1 --- o_Ca ? Number of lines used to derive Ca
88- 91 F4.2 [Sun] Ti Log Ti number abundance relative to solar
93- 96 F4.2 [Sun] e_Ti ? The 1σ uncertainty in Ti
98 I1 --- o_Ti Number of lines used to derive Ti
100-103 F4.2 [Sun] Na ? Log Na number abundance relative to solar
105-108 F4.2 [Sun] e_Na ? The 1σ uncertainty in Na
110 I1 --- o_Na ? Number of lines used to derive Na
112-115 F4.2 [Sun] Ni Log Ni number abundance relative to solar
117-120 F4.2 [Sun] e_Ni ? The 1σ uncertainty in Ni
122 I1 --- o_Ni Number of lines used to derive Ni
124-127 F4.2 [Sun] Zr ? Log Zr number abundance relative to solar (G1)
129-132 F4.2 [Sun] e_Zr ? The 1σ uncertainty in Zr (G1)
134 I1 --- o_Zr ? Number of lines used to derive Zr (G1)
136-139 F4.2 [Sun] Al ? Log Al number abundance relative to solar (G1)
141-144 F4.2 [Sun] e_Al ? The 1σ uncertainty in logN(Al) (G1)
146-149 F4.2 [Sun] Cr ? Log Cr number abundance relative to solar (G1)
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Byte-by-byte Description of file: aratio.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 11 I5 --- Star Star number within the cluster
14- 18 F5.2 [Sun] [Mg/H] ? Log of Mg/H number abundance
20- 24 F5.2 [Sun] [Mg/Fe] ? Log of Mg/Fe number abundance
26- 29 F4.2 [Sun] e_[Mg/Fe] ? The 1σ uncertainty in [Mg/Fe]
31- 35 F5.2 [Sun] [Si/H] Log of Si/H number abundance
37- 41 F5.2 [Sun] [Si/Fe] Log of Si/Fe number abundance
43- 46 F4.2 [Sun] e_[Si/Fe] The 1σ uncertainty in [Si/Fe]
48- 52 F5.2 [Sun] [Ca/H] ? Log of Ca/H number abundance
54- 58 F5.2 [Sun] [Ca/Fe] ? Log of Ca/Fe number abundance
60- 63 F4.2 [Sun] e_[Ca/Fe] ? The 1σ uncertainty in [Ca/Fe]
65- 69 F5.2 [Sun] [Ti/H] Log of Ti/H number abundance
71- 75 F5.2 [Sun] [Ti/Fe] Log of Ti/Fe number abundance
77- 80 F4.2 [Sun] e_[Ti/Fe] The 1σ uncertainty in [Ti/Fe]
82- 86 F5.2 [Sun] [Na/H] ? Log of Na/H number abundance
88- 92 F5.2 [Sun] [Na/Fe] ? Log of Na/Fe number abundance
94- 97 F4.2 [Sun] e_[Na/Fe] ? The 1σ uncertainty in [Na/Fe]
99-103 F5.2 [Sun] [Ni/H] Log of Ni/H number abundance
105-109 F5.2 [Sun] [Ni/Fe] Log of Ni/Fe number abundance
111-114 F4.2 [Sun] e_[Ni/Fe] The 1σ uncertainty in [Ni/Fe]
116-120 F5.2 [Sun] [Zr/H] ? Log of Zr/H number abundance
122-126 F5.2 [Sun] [Zr/Fe] ? Log of Zr/Fe number abundance
128-131 F4.2 [Sun] e_[Zr/Fe] ? The 1σ uncertainty in [Zr/Fe]
133-137 F5.2 [Sun] [Al/H] ? Log of Al/H number abundance (G1)
139-143 F5.2 [Sun] [Al/Fe] ? Log of Al/Fe number abundance (G1)
145-148 F4.2 [Sun] e_[Al/Fe] ? The 1σ uncertainty in [Al/Fe] (G1)
150-154 F5.2 [Sun] [Cr/H] ? Log of Cr/H number abundance (G1)
156-160 F5.2 [Sun] [Cr/Fe] ? Log of Cr/Fe number abundance (G1)
162-165 F4.2 [Sun] e_[Cr/Fe] ? The 1σ uncertainty in [Cr/Fe] (G1)
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Byte-by-byte Description of file: table12.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 8 I2 --- Na Number of stars used for abundance
10- 14 F5.2 [Sun] [Fe/H] ? Log of Fe/H number abundance
16- 19 F4.2 [Sun] e_[Fe/H] ? The 1σ uncertainty in [Fe/H]
21- 25 F5.2 [Sun] [Na/H] Log of Na/H number abundance
27- 30 F4.2 [Sun] e_[Na/H] The 1σ uncertainty in [Na/H]
32- 36 F5.2 [Sun] [Mg/H] ? Log of Mg/H number abundance
38- 41 F4.2 [Sun] e_[Mg/H] ? The 1σ uncertainty in [Mg/H]
43- 47 F5.2 [Sun] [Si/H] Log of Si/H number abundance
49- 52 F4.2 [Sun] e_[Si/H] The 1σ uncertainty in [Si/H]
54- 58 F5.2 [Sun] [Ca/H] ? Log of Ca/H number abundance
60- 63 F4.2 [Sun] e_[Ca/H] ? The 1σ uncertainty in [Ca/H]
65- 69 F5.2 [Sun] [Ti/H] Log of Ti/H number abundance
71- 74 F4.2 [Sun] e_[Ti/H] The 1σ uncertainty in [Ti/H]
76- 80 F5.2 [Sun] [Ni/H] ? Log of Ni/H number abundance
82- 85 F4.2 [Sun] e_[Ni/H] ? The 1σ uncertainty in [Ni/H]
87- 91 F5.2 [Sun] [Zr/H] Log of Zr/H number abundance
93- 96 F4.2 [Sun] e_[Zr/H] The 1σ uncertainty in [Zr/H]
98-102 F5.2 [Sun] [Al/H] ? Log of Al/H number abundance (G1)
104-107 F4.2 [Sun] e_[Al/H] ? The 1σ uncertainty in [Al/H]
109-113 F5.2 [Sun] [Cr/H] ? Log of Cr/H number abundance (G1)
115-118 F4.2 [Sun] e_[Cr/H] ? The 1σ uncertainty in [Cr/H]
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Byte-by-byte Description of file: table13.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 8 I2 --- Na Number of stars used for abundance
10- 14 F5.2 [Sun] [Na/Fe] ? Log of Na/Fe number abundance
16- 19 F4.2 [Sun] e_[Na/Fe] ? The 1σ uncertainty in [Na/Fe]
21- 25 F5.2 [Sun] [Mg/Fe] Log of Mg/Fe number abundance
27- 30 F4.2 [Sun] e_[Mg/Fe] The 1σ uncertainty in [Mg/Fe]
32- 36 F5.2 [Sun] [Si/Fe] ? Log of Si/Fe number abundance
38- 41 F4.2 [Sun] e_[Si/Fe] ? The 1σ uncertainty in [Si/Fe]
43- 47 F5.2 [Sun] [Ca/Fe] Log of Ca/Fe number abundance
49- 52 F4.2 [Sun] e_[Ca/Fe] The 1σ uncertainty in [Ca/Fe]
54- 58 F5.2 [Sun] [Ti/Fe] ? Log of Ti/Fe number abundance
60- 63 F4.2 [Sun] e_[Ti/Fe] ? The 1σ uncertainty in [Ti/Fe]
65- 69 F5.2 [Sun] [Ni/Fe] Log of Ni/Fe number abundance
71- 74 F4.2 [Sun] e_[Ni/Fe] The 1σ uncertainty in [Ni/Fe]
76- 80 F5.2 [Sun] [Zr/Fe] ? Log of Zr/Fe number abundance
82- 85 F4.2 [Sun] e_[Zr/Fe] ? The 1σ uncertainty in [Zr/Fe]
87- 91 F5.2 [Sun] [Al/Fe] ? Log of Al/Fe number abundance (G1)
93- 96 F4.2 [Sun] e_[Al/Fe] ? The 1σ uncertainty in [Al/Fe]
98-102 F5.2 [Sun] [Cr/Fe] ? Log of Cr/Fe number abundance (G1)
104-107 F4.2 [Sun] e_[Cr/Fe] ? The 1σ uncertainty in [Cr/Fe]
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Global notes
Note (G1): Only for M67 and NGC 2158.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 06-Oct-2012