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 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:
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RA (2000) DE Designation(s)
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20 41 25.9 +45 16 49 Deneb = alpha Cyg
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File Summary:
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FileName Lrecl Records Explanations
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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
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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
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Bytes Format Units Label Explanations
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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)
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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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
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Note (1): gf references:
BG : Biemont et al. (1989A&A...209..391B 1989A&A...209..391B) for V II
Biemont et al. (1981ApJ...248..867B 1981ApJ...248..867B) for Zr II
BK : Biemont et al. (1982A&A...107..166B 1982A&A...107..166B)
CC : Cowley & Corliss (1983MNRAS.203..651C 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 1974A&A....34..275H)
HL : Hannaford et al. (1982ApJ...261..736H 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 1985PhyS...32..115L)
LD : Lawler & Dakin (1989, JOSA B, 6, 1457)
MC : Magazzu & Cowley (1986ApJ...308..254M 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 1985MNRAS.213...71W)
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Acknowledgements: Berahitdin ALBAYRAK
(End) Patricia Bauer [CDS] 05-Feb-2001