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J/A+A/364/237       Elemental abundances of Deneb            (Albayrak+, 2000)

A spectral analysis of Deneb (A2 Iae). Albayrak B. <Astron. Astrophys. 364, 237 (2000)> =2000A&A...364..237A
ADC_Keywords: Stars, supergiant ; Abundances, peculiar ; Equivalent widths ; Spectroscopy Keywords: stars: individual: Deneb - stars: fundamental parameters - stars: abundances - stars: evolution - stars: supergiants Abstract: This study presents a detailed model atmosphere abundance analysis of Deneb which was performed using Kurucz LTE ATLAS9 model atmospheres. The atmospheric parameters were determined from Mg I/II and Fe I/II equilibrium, and by fitting the Hγ profile and optical region spectrophotometry. The compromise values which best satisfy these criteria are Teff = 9000 K and log g = 1.45. The Mg I, Mg II, Si II, Ti II, Cr II, Fe I, and Fe II lines yield microturbulences of 3.60, 6.50, 8.50, 8.00, 11.90, 3.60, and 10.40 km/s, respectively. An average microturbulence of 7 km/s was used for the other atomic species. Description: The analysis of all line data for Deneb is in Table A1. The lines are sorted according to species; multiplet number, wavelength, the gf-value with its source, and the deduced abundance are listed. Equivalent widths are given per line in miliAngstroems. Spectral lines that are significantly blended with other elements have been removed. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 20 41 25.9 +45 16 49 Deneb = alpha Cyg ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file abund.dat 20 30 Atomic abundances tablea1.dat 42 533 Elemental abundances tablea1.tex 80 758 LaTeX version of tablea1.dat and abund.dat
See also: J/A+AS/125/219 : mu Lep, 7 Sex, HR 4817, 28 Her elemental abundances (Adelman+ 1997) J/A+AS/129/563 : HR 4487, 14 Hyd, 3 Cen A elemental abund. (Pintado+ 1998) J/A+AS/107/353 : CP stars (Lopez-Garcia+, 1994) J/A+AS/137/227 : HD 133029 & HD 192913 abundances (Lopez-Garcia+ 1999) J/MNRAS/316/514 : 28 And & 99 Her elemental abundances (Adelman+, 2000) J/A+A/354/899 : Elemental abundance analyses IV. (Adelman+, 2000) Byte-by-byte Description of file: abund.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Ion Ion designation 8- 9 A2 --- Element Element (identical to bytes 1-2) 11- 15 F5.2 --- log(Nel/Ntot) Derived abundance of Element (ratio of number of atoms to the total number of atoms per unit volume) 17- 20 F4.2 --- e_log(Nel/Ntot) ? rms uncertainty on log(Nel/Ntot)
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Ion Ion designation 8- 14 A7 --- Mult ? Multiplet number 16- 22 F7.2 0.1nm lambda Wavelength 24- 28 F5.2 --- log(gf) Oscillator strength 30- 31 A2 --- r_log(gf) Reference for log(gf) (1) 33- 36 I4 10-4nm EW ? Equivalent width (in miliAnstroems) 38- 42 F5.2 --- log(N/Ntot) Derived abundance in relative number of atoms per unit volume
Note (1): gf references: BG : Biemont et al. (1989A&A...209..391B) for V II Biemont et al. (1981ApJ...248..867B) for Zr II BK : Biemont et al. (1982A&A...107..166B) CC : Cowley & Corliss (1983MNRAS.203..651C) FW : Fuhr & Wiese (1990, in Lide, D. R. ed, CRC Handbook of Chemistry and Physics, CRC Press, Cleveland, OH) GB : Grevese et al. (1981, Upper Main Sequence CP Stars, 23rd. Liege Astrophys. Coll., 211) HE : Heise (1974A&A....34..275H) HL : Hannaford et al. (1982ApJ...261..736H) JK : Joensson et al. (1984, Phys. Rev. A, 30, 2429) KG : Kurucz (guess-1995, In: Adelman S.J., Wiese W.L. (eds.) Astrophysical Applications of Powerful New Databases. ASP Conference Series, p. 205) KP : Kurucz & Peytremann (1975, Cat. VI/10) KX : Kurucz, 1995, in Astrophysical Applications of Powerful New Databases, eds. S. J. Adelman and W. L. Wiese (ASP, San Francisco), ASP Conf. Ser. 78, 205 LA : Lanz & Artru (1985PhyS...32..115L) LD : Lawler & Dakin (1989, JOSA B, 6, 1457) MC : Magazzu & Cowley (1986ApJ...308..254M) MF : Martin et al., 1988, and Fuhr et al. 1988, Cat. VI/72 SG : Schulz-Gulde (1969, JQSRT 9, 13 ) WF : Wiese et al., 1996, J. Phys. Chem. Ref. Data, Monograph 6 WM : Wiese & Martin, 1980, NSRDS-NBS 68. Part 2, US Government Printing Office, Washington, DC. WS : Wiese et al., 1966, NSRDS-NBS 4, US Government Printing, Office, Washington, DC and 1969, NSRDS-NBS, Washington, D.C., US Department of Commerce, National Bureau of Standards WV : Ward (1985MNRAS.213...71W)
Acknowledgements: Berahitdin ALBAYRAK
(End) Patricia Bauer [CDS] 05-Feb-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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