J/AJ/127/2723 Abundances of 3 supergiants in Sextans A (Kaufer+, 2004)
First stellar abundances in the dwarf irregular galaxy Sextans A.
Kaufer A., Venn K.A., Tolstoy E., Pinte C., Kudritzki R.-P.
<Astron. J., 127, 2723-2737 (2004)>
=2004AJ....127.2723K 2004AJ....127.2723K
ADC_Keywords: Stars, supergiant ; Stars, A-type ; Spectra, ultraviolet ;
Abundances
Keywords: galaxies: abundances - galaxies: individual (Sextans A) -
galaxies: irregular - stars: abundances
Abstract:
We present the abundance analyses of three isolated A-type supergiant
stars in the dwarf irregular galaxy Sextans A (=DDO 75) from
high-resolution spectra obtained with the Ultraviolet-Visual Echelle
Spectrograph (UVES) on the Kueyen telescope (UT2) of the ESO Very
Large Telescope (VLT). Detailed model atmosphere analyses have been
used to determine the stellar atmospheric parameters and the elemental
abundances of the stars.
Objects:
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RA (2000) DE Designation(s)
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10 11 3.21 -04 41 32.0 Sex A 754 = [VPW98] 754
10 11 0.04 -04 41 12.5 Sex A 1344 = [VPW98] 1344
10 10 57.19 -04 40 8.0 Sex A 1911 = [VPW98] 1911
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 92 129 Line strengths, atomic data, and abundances
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See also:
J/AJ/116/2341 : UBVRI photometry in Sextans A (Van Dyk+ 1998)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 32 A32 --- Type Calculation type
34- 37 I4 --- ECode Element code (1)
39- 46 F8.3 0.1nm Lambda Wavelength
48- 50 I3 --- Mult Multiplet table number
52- 56 F5.2 eV ExPot Excitation potential
58- 62 F5.2 [---] log(gf) Log of the oscillator strength
64 A1 --- l_EW754 Limit flag on EW754
65- 67 I3 0.1pm EW754 ? SexA-754 ([VPW98] 754) equivalent width
69 A1 --- l_A754 Limit flag on A754
70- 73 F4.2 [---] A754 ? SexA-754 ([VPW98] 754) abundance
75- 77 I3 0.1pm EW1344 ? SexA-1344 ([VPW98] 1344) equivalent width
79- 82 F4.2 [---] A1344 ? SexA-1344 ([VPW98] 1344) abundance
84- 86 I3 0.1pm EW1911 ? SexA-1911 ([VPW98] 1911) equivalent width
88- 91 F4.2 [---] A1911 ? SexA-1911 ([VPW98] 1911) abundance
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Note (1): In the format EEII, where EE is the element's atomic number
and II is the number of ionizations.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 08-Jul-2004