J/AJ/129/1607 Equivalent widths of 4 RGB in NGC 7492 (Cohen+, 2005)
Outer versus inner halo globular clusters: NGC 7492 abundances.
Cohen J.G., Melendez J.
<Astron. J., 129, 1607-1615 (2005)>
=2005AJ....129.1607C 2005AJ....129.1607C
ADC_Keywords: Clusters, globular ; Equivalent widths ; Stars, giant
Keywords: Galaxy: halo - globular clusters: general -
globular clusters: individual (NGC 7492) - stars: abundances
Abstract:
We have carried out a detailed abundance analysis for 21 elements in a
sample of four RGB stars in the outer halo globular cluster NGC 7492
(RGC 25kpc); we find [Fe/H]=-1.82dex inferred from Fe I lines (-1.79
from Fe II) using high-dispersion (R=λ/Δλ=35,000)
spectra obtained with HIRES at the Keck Observatory.
Objects:
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RA (2000) DE Designation(s)
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23 08 22.32 -15 37 43 Star 231 = Cl* NGC 7492 BCFF 231
23 08 25.75 -15 37 10 Star 458 = Cl* NGC 7492 BCFF 458
23 08 29.46 -15 36 32 Star R = Cl* NGC 7492 C R
23 08 20.83 -15 36 20 Star 950 = Cl* NGC 7492 BCFF 950
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 49 214 Equivalent widths
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See also:
J/A+AS/67/327 : CCD photometry in NGC 7492 (Buonanno+, 1987)
J/MNRAS/122/363 : Eggen PV photometry in NGC 7492 (Cuffey, 1961)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Ion Ion identification
6- 12 F7.2 0.1nm Wave Wavelength in Angstroms
14- 17 F4.2 eV EP Excitation potential
19- 24 F6.2 [-] log(gf) Log of the oscillator strength
26- 30 F5.1 0.1pm EW(231) ? NGC 7492 star 231 equivalent width (1)
32- 36 F5.1 0.1pm EW(R) ? NGC 7492 star R equivalent width (1)
38- 42 F5.1 0.1pm EW(950) ? NGC 7492 star 950 equivalent width (1)
44- 48 F5.1 0.1pm EW(458) ? NGC 7492 star 458 equivalent width (1)
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Note (1): In units of milliAngstroms. Alphabetical identifications are
from Buonanno et al. (1987, Cat. J/A+AS/67/327), numerical ones are
from Cuffey (1961, Cat. J/MNRAS/122/363).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 30-Aug-2005