J/A+AS/107/353 CP stars (Lopez-Garcia+, 1994)
Elemental abundance studies of CP stars: The silicon star HD 43819 and
the CP Star HD 147550
Lopez-Garcia Z., Adelman S.J.
<Astron. Astrophys. Suppl. Ser. 107, 353 (1994)>
=1994A&AS..107..353L 1994A&AS..107..353L
ADC_Keywords: Stars, peculiar; Equivalent widths; Abundances
Keywords: stars: abundances - stars: chemically peculiar -
stars: individual: HD 43819 - stars: individual HD 147550
Abstract:
Fine analyses of the silicon star HD 43819 and the CP star HD 147550
are presented using ATLAS9 model atmospheres whose predictions fit the
optical region spectrophotometry and Hγ profiles and have the
same bulk metallicity as the deduced abundances. For HD 43819 except
for scandium and nickel, the derived abundances of the iron peak
elements are around 10 times solar while those of the rare earths are
about 1000 times solar. The lighter elements are generally
underabundant except for silicon and calcium which are overabundant.
HD 147550 is helium and calcium poor; carbon, magnesium, aluminum,
scandium, titanium, and iron normal; and sulfur, chromium, manganese,
nickel, strontium, zirconium, barium, europium, and mercury rich. It
is a nonmagnetic CP star intermediate between the HgMn and the hot Am
stars.
Objects:
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RA (2000) DE Designation(s)
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06 19 01.8 +17 19 31 HD 43819 = HR 2258 = V1155 Ori
16 22 38.9 -02 04 48 HD 147550 = HR 6096
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4a.dat 73 281 Elemental abundances
table4b.dat 41 25 Relative abundances
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See also:
J/A+AS/137/227 : Paper II. HD 133029, HD 192913 (Lopez-Garcia+ 1999)
J/A+A/367/859 : Paper III. α Scl and HD 170973 (Lopez-Garcia+, 2001)
J/A+AS/125/219 : mu Lep, 7 Sex, HR 4817 & 28 Her abundances (Adelman+ 1997)
J/A+AS/129/563 : Abundances of HR 4487, 14 Hyd and 3 Cen A (Pintado+ 1998)
J/MNRAS/316/514 : 28 And & 99 Her elemental abundances (Adelman+, 2000)
J/A+A/367/597 : ups Her, phi Her & HR 7018 abundances (Adelman+, 2001)
J/A+A/394/187 : γ Ser & 101 Her elemental abundances (Caliskan+, 2002)
J/A+A/406/975 : theta And, eps Del, eps Aqr, iota And (Kocer+, 2003)
J/A+A/406/987 : xi Oct, alpha Sex, 68 Tau elemental abund. (Pintado+, 2003)
Byte-per-byte Description of file: table4a.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Element Element
10- 12 I3 --- No []? Multiplet Number
16- 22 F7.2 0.1nm Lambda Wavelength
26- 30 F5.2 --- log(gf) Oscillator strength
34- 35 A2 --- r_log(gf) Reference to oscillator strength (1)
39- 41 I3 0.1pm W1 []? Equivalent width for HD 43819
46- 50 F5.2 --- log(N/Ntot)1 []? Deduced abundance for HD43189 (2)
56- 58 I3 0.1pm W2 []? Equivalent width for HD 147550
63- 67 F5.2 --- log(N/Ntot)2 []? Deduced abundance for HD 147550 (2)
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Note (1): Sources of gf-values:
BK = Biemont et al. (1982A&A...107..166B 1982A&A...107..166B)
DW = Dworetsky (1972PASP...84..652D 1972PASP...84..652D)
GB = Grevesse et al. (1981, Upper Main Sequence CP Stars, 23rd.
Liege Astrophys. Coll., 211)
KX = Kurucz (1993, ASP Conf. Ser. 44, 87)
LA = Lanz & Artru (1985PhyS...32..115L 1985PhyS...32..115L)
MC = Magazzu & Cowley (1986ApJ...308..254M 1986ApJ...308..254M)
MF = Martin, Fuhr & Wiese (1988, Cat. VI/72) for Sc through Mn;
Fuhr, Martin & Wiese (1988, Cat. VI/72) for Fe through Ni;
SC = Schaeffer (1971ApJ...163..411S 1971ApJ...163..411S)
WD = Ward (1985MNRAS.213...71W 1985MNRAS.213...71W)
WF = Wiese & Fuhr (1975JPCRD...4..263W 1975JPCRD...4..263W)
WM = Wiese & Martin (1980, NSRDS-NBS 68, Part.2, US Governement
Printing Office, Washington)
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)
Note (2): N = number of atoms/volume of particular element
Ntotal = number of atoms/volume of all elements
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Byte-per-byte Description of file: table4b.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Element Element
12- 16 F5.2 --- log(El/Ntot)1 []? Elemental abundance for HD 43819 (1)
17 A1 --- u_log(El/Ntot)1 Uncertainty flag on log(El/Ntot)1
21- 24 F4.2 --- e_log(El/Ntot)1 []? rms uncertainty on log(El/Ntot)1
30- 34 F5.2 --- log(El/Ntot)2 []? Elemental abundance for HD 147550 (1)
38- 41 F4.2 --- e_log(El/Ntot)2 []? rms uncertainty on log(El/Ntot)2
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Note (1): El = Element
Ntot = number of atoms/volume of all elements
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(End) Patricia Bauer [CDS] 19-May-1994