J/BaltA/14/51 Elemental abundances of 4 Lac and nu Cep (Yuce+, 2005)
Elemental abundances of 4 Lacertae and ν Cephei
Yuce K.
<Baltic Astron., 14, 51 (2005)>
=2005BaltA..14...51Y 2005BaltA..14...51Y
ADC_Keywords: Stars, supergiant ; Equivalent widths ; Abundances, peculiar
Keywords: stars: supergiants, abundances, atmosphere -
stars: individual: 4 Lac, nu Cep
Abstract:
Elemental abundance analysis based on high S/N and high resolution
Dominion Astrophysical Observatory spectrograms have been performed
for two early type supergiants: 4 Lac (B9 Iab) and ν Cep (A2 Ia).
Lines as weak as of order 5mÅ are employed in this study. The
projected rotational velocities of these stars are 14 and 26km/s,
respectively. Both stars show similar radial velocity amplitudes,
macroturbulent velocities and the same general elemental abundance
trends. Their He, CNO and light element abundances are solar or
overabundant while the iron peak and heavy element abundances are
solar or underabundant. Detailed LTE model atmosphere abundance
analysis shows that 4 Lac has nuclearly processed matter in its
photosphere while ν Cep does not.
Description:
4 Lac and ν Cep are two early type supergiants. Table A1 contains
the elemental abundances for the stars. It is grouped by atomic
species with the lines listed by multiplet and within multiplets by
numerical order.
Objects:
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RA (2000) DE Designation(s)
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22 24 31.0 +49 28 35 4 Lac = HD 212593
21 45 26.9 +61 07 15 nu Cep = HD 207260
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
abund.dat 33 25 Atomic abundances
tablea1.dat 55 383 Elemental abundances of 4 Lac and ν Cep
tablea1.tex 74 571 LaTeX version of tablea1.dat and abund.dat
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See also:
J/A+A/406/975 : Elemental abundances of four A-B stars (Kocer+, 2003)
J/A+A/406/987 : Elemental abundances of three CP stars (Pintado+, 2003)
J/A+A/394/187 : γ Ser + 101 Her elemental abundances (Caliskan+, 2002)
J/A+A/367/597 : ups Her, phi Her + HR 7018 abundances (Adelman+, 2001)
J/A+A/367/859 : α Scl and HD 170973 abundances (Lopez-Garcia+, 2001)
J/A+A/371/1078 : Elemental abundance of 4 normal B & A stars (Adelman+, 2001)
J/MNRAS/316/514 : 28 And + 99 Her elemental abundances (Adelman+, 2000)
J/A+A/354/899 : Elemental abundance analyses IV. (Adelman+, 2000)
J/A+AS/137/227 : HD 133029 & HD 192913 abundances (Lopez-Garcia+ 1999)
J/A+AS/129/563 : Abundances of HR 4487, 14 Hyd and 3 Cen A (Pintado+ 1998)
J/A+AS/125/219 : Abundances of mu Lep, 7 Sex, HR 4817 + 28 Her (Adelman+ 1997)
J/A+AS/107/353 : HD 43819 & HD 147550 abundances (Lopez-Garcia+, 1994)
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
8- 9 A2 --- Element Element (identical to bytes 1-2)
12- 16 F5.2 --- log(Nel/Ntot)1 ? 4 Lac derived abundance of Element (1)
18- 21 F4.2 --- e_log(Nel/Ntot)1 ? rms uncertainty on log(Nel/Ntot)1
23- 28 F6.2 --- log(Nel/Ntot)2 ? nu Cep derived abundance of Element (1)
30- 33 F4.2 --- e_log(Nel/Ntot)2 ? rms uncertainty on log(Nel/Ntot)2
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Note (1): Ratio of number of atoms to the total number of atoms per unit volume
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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
8- 13 A6 --- Mult Multiplet number (1)
15- 21 F7.2 0.1nm Lambda Laboratory wavelength
23- 27 F5.2 --- log(gf) log gf value
29- 30 A2 --- r_log(gf) loggf value reference (3)
32- 36 F5.1 0.1pm EW1 ? Equivalent width for 4 Lacertae
38- 42 F5.2 --- log(El/Ntot)1 ? Derived abundance for 4 Lacertae (2)
44- 48 F5.1 0.1pm EW2 ? Equivalent width for ν Cep
50- 55 F6.2 --- log(El/Ntot)2 ? Derived abundance for ν Cep (2)
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Note (1): Multiplet number from Moore 1945 if first line of multiplet;
if not from Moore an initial indicating the paper
Note (2): Derived abundance in relative number of atoms per unit volume
Note (3): gf value references are as follows:
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
FW = Fuhr & Wiese (1990, in Lide, D. R. ed, CRC Handbook of Chemistry
and Physics, CRC Press, Cleveland, OH) and
Fuhr & Wiese (1998, In ed. D. R. Lide, CRC Handbook of
Chemistry and Physics, 79th ed., CRC Press Inc., Boca Raton)
GB = Grevesse et al. (1981, Upper Main Sequence CP Stars, 23rd.
Liege Astrophys. Coll., 211)
HL = Hannaford et al. (1982ApJ...261..736H 1982ApJ...261..736H);
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, SAO Special Report No. 362, part. 1)
KX = Kurucz & Bell (1995, Kurucz CD-Rom No. 23)
LA = Lanz & Artru (1985PhyS...32..115L 1985PhyS...32..115L)
LD = Lawler & Dakin (1989, JOSA B, 6, 1457)
MF = Fuhr, Martin & Wiese, 1988, and Martin, Fuhr & Wiese, 1988,
Cat. VI/72
SG = Schulz-Gulde (1969, JQSRT, 9, 13)
WF = Wiese, Fuhr & Deters (1996, Atomic transition probabilities of
carbon, nitrogen, and oxygen : a critical data compilation.
Edited by W.L. Wiese, J.R. Fuhr, and T.M. Deters.
Washington, DC)
WM = Wiese & Martin (1980, NSRDS-NBS 68. Part 2, US Government
Printing Office, Washington, DC);
WS = Wiese, Smith & Glennon (1966, NSRDS-NBS 4, US Governement
Printing Office, Washington) and
Wiese, Smith & Miles (1969, NSRDS-NBS, D.C.: US Department of
Commerce, National Bureau of Standards)
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Acknowledgements: Kutluay Yuce, kyuce(at)astro1.science.ankara.edu.tr
(End) Patricia Vannier CDS 07-Mar-2005