J/AJ/141/58 NGC 2204 and NGC 2243 red giant abundances (Jacobson+, 2011)
A chemical abundance study of red giants in open clusters NGC 2204 and NGC 2243.
Jacobson H.R., Friel E.D., Pilachowski C.A.
<Astron. J., 141, 58 (2011)>
=2011AJ....141...58J 2011AJ....141...58J (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Stars, giant ; Equivalent widths ; Abundances
Keywords: Galaxy: abundances -
open clusters and associations: individual (NGC 2204, NGC 2243) -
stars: abundances
Abstract:
Detailed element abundances have been determined for 10-13 stars each
in the open clusters (OCs) NGC 2204 and NGC 2243 based on Hydra
multi-object echelle spectra obtained with the CTIO 4m telescope. We
have found average cluster metallicities of [Fe/H]=-0.23±0.04
and -0.42±0.05 for NGC 2204 and NGC 2243, respectively, from an
equivalent width analysis.
Description:
NGC 2204 and NGC 2243 were observed with the Hydra multi-object
spectrograph on the CTIO Blanco 4m telescope on 2007 January 2-3
under clear skies.
On 2009 March 10, CTIO Hydra observations of the same NGC 2243 field
configuration were acquired on our behalf by C.I. Johnson in a series
of three 1800s integrations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 88 35 NGC 2204 stars observed
table3.dat 88 24 NGC 2243 stars observed
table4.dat 42 23 Atmospheric parameters and Fe abundances for
13 stars of N2204 and 10 stars of N2243
table6.dat 39 793 Equivalent width measurements for
13 stars of N2204 and 10 stars of N2243
table7.dat 69 23 Abundances of Al, Si, Ti, Cr, and Ni for
13 stars of N2204 and 10 stars of N2243
table8.dat 58 10 Abundances of Na, Mg, Ca, and Zr for
10 stars of N2243
table9.dat 95 23 Al, Si, Ti, Cr, and Ni abundance ratios for
13 stars of N2204 and 10 stars of N2243
table10.dat 78 10 Na, Mg, Ca, and Zr abundance ratios for
10 stars of N2243
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID1 Identifications number from Hawarden
(1976MNRAS.174..225H 1976MNRAS.174..225H) (1)
6- 9 I4 --- ID2 ?=- Identifications number from Kassis et al.
(1997AJ....113.1723K 1997AJ....113.1723K) (2)
11- 12 I2 h RAh Right ascension (J2000)
14- 15 I2 min RAm Right ascension (J2000)
17- 21 F5.2 s RAs Right ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 33 F4.1 arcsec DEs Declination (J2000)
35- 40 F6.3 mag Vmag ?=- V magnitude
41 A1 --- n_Vmag [d] d: photometry from Hawarden
(1976MNRAS.174..225H 1976MNRAS.174..225H)
42- 47 F6.3 mag B-V ?=- B-V colour index
48 A1 --- n_B-V [d] d: photometry from Hawarden
(1976MNRAS.174..225H 1976MNRAS.174..225H)
50- 55 F6.3 mag Jmag ?=- 2MASS J magnitude
57- 62 F6.3 mag Hmag ?=- 2MASS H magnitude
64- 69 F6.3 mag Kmag ?=- 2MASS Ks magnitude
71- 73 I3 --- S/N Signal-to-noise ratio
75- 80 F6.1 km/s RV ?=- Radial velocity
82- 85 A4 --- Memb Membership code (M=member, M?=possible member,
NM=non-member)
86 A1 --- n_Memb [c] c: Likely cluster member
(Mermilliod & Mayor 2007A&A...470..919M 2007A&A...470..919M)
88 A1 --- EW [*] * indicates EW and abundances data
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Note (1): Identifications also used in WEBDA, save for stellar ID's beginning
with 8000. Such targets were selected from the 2MASS catalog and to our
knowledge have no counterpart in available optical photometric catalogs of
the cluster. Star named in Simbad for NNNN < 8000.
8001 = 2MASS J06152859-1836165
8006 = 2MASS J06154241-1838185
8009 = 2MASS J06155295-1835161
8012 = 2MASS J06155257-1832289
Note (2): Stars identified as <Cl* NGC 2204 KBVI NNNN> in Simbad
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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- 4 I4 --- ID1 Identification used in WEBDA
6- 9 I4 --- ID2 ? Identification from Kaluzny et al. (1996,
Cat. J/A+AS/118/303),
<[KKM96] TEK3 NNNN> in Simbad
11- 12 I2 h RAh Right ascension (J2000)
14- 15 I2 min RAm Right ascension (J2000)
17- 21 F5.2 s RAs Right ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 33 F4.1 arcsec DEs Declination (J2000)
35- 40 F6.3 mag Vmag V magnitude
41 A1 --- n_Vmag [c] c: V magnitude from Kaluzny et al.
(1996, Cat. J/A+AS/118/303)
43- 47 F5.3 mag b-y ?=- b-y colour index
49- 54 F6.3 mag Jmag ?=- 2MASS J magnitude
56- 61 F6.3 mag Hmag ?=- 2MASS H magnitude
63- 68 F6.3 mag Kmag ?=- 2MASS Ks magnitude
70- 71 I2 --- S/N1 ?=- Signal-to-noise ratio at 6240Å
73- 75 I3 --- S/N2 ?=- Signal-to-noise ratio at 6700Å
77- 82 F6.1 km/s RV ?=- Radial velocity
84- 85 A2 --- Memb Membership code
88 A1 --- EW [*] * indicates EW and abundances data
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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- 5 A5 --- Cluster Cluster name
7- 10 I4 --- ID1 Star identification number with the cluster
12- 15 I4 K Teff Effective temperature
17- 19 F3.1 [cm/s2] logg Surface gravity
21- 23 F3.1 km/s vt Microturbulent velocity
25- 28 F4.2 [-] logN(Fe) Abundance of Fe (H=12)
30- 34 F5.2 [Sun] [Fe/H] Metallicity
36- 39 F4.2 [Sun] e_[Fe/H] rms uncertainty on [Fe/H]
41- 42 I2 --- o_[Fe/H] Number of lines
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
6 A1 --- --- [-]
7- 10 I4 --- ID1 Star identification number, within the cluster
12- 19 F8.3 0.1 lambda Wavelength (Å)
21- 24 F4.1 --- Ion Ion identification (1)
26- 29 F4.2 eV EP Excitation potential
31- 35 F5.2 [-] log(gf) Log of the oscillator strength
37- 39 I3 10-13m EW Equivalent width; milliAngstroms
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Note (1): XX.Y where XX is the element number and Y is the ionization state.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 10 I4 --- ID1 Star identification number with the cluster
12- 15 F4.2 [-] logN(Al) Al abundance (H=12)
17- 20 F4.2 [-] e_logN(Al) rms uncertainty on logN(Al)
22 I1 --- o_logN(Al) Number of lines for logN(Al)
24- 27 F4.2 [-] logN(Si) Si abundance (H=12)
29- 32 F4.2 [-] e_logN(Si) ?=- rms uncertainty on logN(Si)
34 I1 --- o_logN(Si) Number of lines for logN(Si)
36- 39 F4.2 [-] logN(Ti) Ti abundance (H=12)
41- 44 F4.2 [-] e_logN(Ti) ?=- rms uncertainty on logN(Ti)
46 I1 --- o_logN(Ti) Number of lines for logN(Ti)
48- 51 F4.2 [-] logN(Cr) ?=- Cr abundance (H=12)
53- 56 F4.2 [-] e_logN(Cr) ?=- rms uncertainty on logN(Cr)
57 I1 --- o_logN(Cr) Number of lines for logN(Cr)
59- 62 F4.2 [-] logN(Ni) Ni abundance (H=12)
64- 67 F4.2 [-] e_logN(Ni) ?=- rms uncertainty on logN(Ni)
69 I1 --- o_logN(Ni) Number of lines for logN(Ni)
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 10 I4 --- ID1 Star identification number with the cluster
12- 15 F4.2 [-] logN(Na) ? Na abundance (H=12)
17- 20 F4.2 [-] e_logN(Na) ?=- rms uncertainty on logN(Na)
22 I1 --- o_logN(Na) ? Number of lines for logN(Na)
24- 27 F4.2 [-] logN(Mg) ?=- Mg abundance (H=12)
29- 32 F4.2 [-] e_logN(Mg) ?=- rms uncertainty on logN(Mg)
34 I1 --- o_logN(Mg) ?=- Number of lines for logN(Mg)
36- 39 F4.2 [-] logN(Ca) ? Ca abundance (H=12)
41- 44 F4.2 [-] e_logN(Ca) ? rms uncertainty on logN(Ca)
46 I1 --- o_logN(Ca) ? Number of lines for logN(Ca)
48- 51 F4.2 [-] logN(Zr) ?=- Zr abundance (H=12)
53- 56 F4.2 [-] e_logN(Zr) ?=- rms uncertainty on logN(Zr)
58 I1 --- o_logN(Zr) ?=- Number of lines for logN(Zr)
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 10 I4 --- ID1 Star identification number with the cluster
12- 16 F5.2 [Sun] [Al/H] Abundance [Al/H]
18- 22 F5.2 [Sun] [Al/Fe] Abundance [Al/Fe]
24- 27 F4.2 [Sun] e_[Al/Fe] rms uncertainty on [Al/Fe]
29- 33 F5.2 [Sun] [Si/H] Abundance [Si/H]
35- 39 F5.2 [Sun] [Si/Fe] Abundance [Si/Fe]
41- 44 F4.2 [Sun] e_[Si/Fe] rms uncertainty on [Si/Fe]
46- 50 F5.2 [Sun] [Ti/H] Abundance [Ti/H]
52- 56 F5.2 [Sun] [Ti/Fe] Abundance [Ti/Fe]
58- 61 F4.2 [Sun] e_[Ti/Fe] rms uncertainty on [Ti/Fe]
63- 67 F5.2 [Sun] [Cr/H] ?=- Abundance [Cr/H]
69- 73 F5.2 [Sun] [Cr/Fe] ?=- Abundance [Cr/Fe]
75- 78 F4.2 [Sun] e_[Cr/Fe] ?=- rms uncertainty on [Cr/Fe]
80- 84 F5.2 [Sun] [Ni/H] Abundance [Ni/H]
86- 90 F5.2 [Sun] [Ni/Fe] Abundance [Ni/Fe]
92- 95 F4.2 [Sun] e_[Ni/Fe] rms uncertainty on [Ni/Fe]
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Cluster Cluster name
7- 10 I4 --- ID1 Star identification number with the cluster
12- 16 F5.2 [Sun] [Na/H] ? Abundance [Na/H]
18- 22 F5.2 [Sun] [Na/Fe] ? Abundance [Na/Fe]
24- 27 F4.2 [Sun] e_[Na/Fe] ? rms uncertainty on [Na/Fe]
29- 33 F5.2 [Sun] [Mg/H] ?=- Abundance [Mg/H]
35- 39 F5.2 [Sun] [Mg/Fe] ?=- Abundance [Mg/Fe]
41- 44 F4.2 [Sun] e_[Mg/Fe] ?=- rms uncertainty on [Mg/Fe]
46- 50 F5.2 [Sun] [Ca/H] ? Abundance [Ca/H]
52- 56 F5.2 [Sun] [Ca/Fe] ? Abundance [Ca/Fe]
58- 61 F4.2 [Sun] e_[Ca/Fe] ? rms uncertainty on [Ca/Fe]
63- 67 F5.2 [Sun] [Zr/H] ?=- Abundance [Zr/H]
69- 73 F5.2 [Sun] [Zr/Fe] ?=- Abundance [Zr/Fe]
75- 78 F4.2 [Sun] e_[Zr/Fe] ?=- rms uncertainty on [Zr/Fe]
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 24-Jul-2012