J/A+A/345/430 Abundances of 6 cool supergiants in NGC 330 (Hill, 1999)
Abundances of cool supergiants in the SMC young cluster NGC 330.
Hill V.
<Astron. Astrophys. 345, 430 (1999)>
=1999A&A...345..430H 1999A&A...345..430H (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Stars, supergiant ; Abundances
Keywords: stars: abundances - stars: supergiants - galaxies: abundances -
galaxies: Magellanic Clouds
Description:
NGC 330 is the brightest SMC young cluster and contains many bright
supergiants. This cluster has aroused special interest, since the
earlier abundance determinations indicated an abundance lower by a
factor 5 than in the SMC field young population. In this Paper we
analyse high resolution spectra of 6 cool supergiants in NGC 330,
and compare in an homogeneous way, the metallicity and abundance
ratios of various elements in NGC 330 and in the field of the SMC.
The following Table is the Apendix to this Paper, giving the line list
used in the analysis, together with the measured equivalent width and
the derived abundance for each of the 6 stars.
Objects:
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RA (2000) DE Designation(s)
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00 56 12 -72 29.0 NGC 330
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
appendix.dat 106 367 Line by line elemental abundances
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See also:
J/A+A/324/435 : Chemical composition of 6 K supergiants in the SMC (Hill 1997)
Byte-by-byte Description of file: appendix.dat
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Bytes Format Units Label Explanations
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1- 7 F7.2 0.1nm Lambda Central wavelength of the line
9- 10 A2 --- El Element
11 I1 --- DegIon Degree of Ionisation
13- 16 F4.2 eV Xex ? Exitation potential of the line
18- 22 F5.2 --- loggf ? Oscillator strength of the line
25- 29 F5.1 0.1pm EWA3 ? Equivalent width in Cl* NGC 330 Rob A3
30 A1 --- n_EWA3 [*] Note on EWA3 (1)
32- 36 F5.2 Sun [X/H]A3 ? Derived abundance for Cl* NGC 330 Rob A3
39- 43 F5.1 0.1pm EWA6 ? Equivalent width in Cl* NGC 330 Rob A6
44 A1 --- n_EWA6 [*] Note on EWA6 (1)
46- 50 F5.2 Sun [X/H]A6 ? Derived abundance for Cl* NGC 330 Rob A6
53- 57 F5.1 0.1pm EWA7 ? Equivalent width in Cl* NGC 330 Rob A7
58 A1 --- n_EWA7 [*] Note on EWA7 (1)
60- 64 F5.2 Sun [X/H]A7 ? Derived abundance for Cl* NGC 330 Rob A7
67- 71 F5.1 0.1pm EWA14 ? Equivalent width in Cl* NGC 330 Rob A14
72 A1 --- n_EWA14 [*] Note on EWA14 (1)
74- 78 F5.2 Sun [X/H]A14 ? Derived abundance for Cl* NGC 330 Rob A14
81- 85 F5.1 0.1pm EWA45 ? Equivalent width in Cl* NGC 330 Rob A45
86 A1 --- n_EWA45 [*] Note on EWA45 (1)
88- 92 F5.2 Sun [X/H]A45 ? Derived abundance for Cl* NGC 330 Rob A45
95- 99 F5.1 0.1pm EWB40 ? Equivalent width in Cl* NGC 330 Rob B40
100 A1 --- n_EWB40 [*] Note on EWB40 (1)
102-106 F5.2 Sun [X/H]B40 ? Derived abundance for Cl* NGC 330 Rob B40
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Note (1): *: the abundance was determined by fitting the line profile rather
than using this equivalent width, due to a severe blend or to
hyperfine structure of the line.
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Acknowledgements: Vanessa Hill
(End) Patricia Bauer [CDS] 20-May-1999