J/PAZh/26/465 IRAS 20004+2955 (V1027 Cyg) chemical comp. (Klochkova+, 2000)
Optical spectrum of the infrared source IRAS 20004+2955 (V1027 Cyg).
Klochkova V.G., Mishenina T.V., Panchuk V.E.
<Pis'ma Astron. Zh. 26, 465 (2000)>
=2000PAZh...26..465K 2000PAZh...26..465K
=2000AstL...26..398K 2000AstL...26..398K
ADC_Keywords: Stars, variable; Equivalent widths; Abundances
Abstract:
Based on high-dispersion echelle spectra taken with the 6-m telescope,
detailed chemical composition of the IR source IRAS 20004+2955
identified with the variable star V1027 Cyg is studied.
Object:
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RA (2000) DE Designation
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20 02 27.38 +30 04 25.5 V1027 Cyg = IRAS 20004+2955 = HD 333385
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 47 115 Atomic data, equivalent widths of special
lines and elemental abundances for two
atmosphere models
table3.dat 37 19 Atmospheric elemental abundances for V1027 Cyg
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See also:
J/PAZh/26/510 : Spectrum of bipolar nebula AFGL 2688 (Klochkova+, 2000)
J/PAZh/26/115 : Spectrum of IRAS 23304+6147 (Klochkova+, 2000)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- El Element
7- 14 F8.3 0.1nm Lambda Wavelength
17- 20 F4.2 eV ExcPot Excitation potentials of the lower level
23- 27 F5.2 --- Loggf Oscillator strength (log gf)
30- 35 F6.2 0.1um EW Equivalent width
38- 41 F4.2 --- A(X)1 Chemical composition for the model:
Teff=5000K, logg=1.0
44- 47 F4.2 --- A(X)2 Chemical composition for the model:
Teff=4900K, logg=0.5;
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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 A4 --- El Element
6- 7 I2 --- n Number of the lines used
10- 13 F4.2 --- logA1 Mean atmospheric elemental abundances for
Teff=5000K, logg=1.0
16- 19 F4.2 --- e_logA1 ? rms uncertainty on logA1
22- 25 F4.2 --- logA2 Mean atmospheric elemental abundance for
Teff=4900K, logg=0.5
28- 31 F4.2 --- e_logA2 ? rms uncertainty on logA2
34- 37 F4.2 --- logASun Solar atmospheric elemental abundance
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(End) Veta Avedisova [INASAN] 29-Jun-2001