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J/AZh/84/429     Abundances in atmospheres of cool giants     (Mishenina+, 2007)

Abundances of neutron-capture elements in atmospheres of cool giants. Mishenina T.V., Gorbaneva T.I., Bienayme O., Soubiran C., Kovtyukh V.V., Orlova L.F. <Astron. Zh. 84, 429 (2007)> =2007AZh....84..429M =2007ARep...51..382M
ADC_Keywords: Stars, giant ; Abundances Abstract: We have determined the atmospheric abundances of Y, Ba, La, Ce, Pr, Nd, and Eu for a sample of 171 giants selected as clump giants with metallicities [Fe/H] between 0.7 and 0.3dex, based on photometric criteria. In our analysis, we assumed local thermodynamic equilibrium and fit the parameters of model atmospheres to high-resolution (R=42000) echelle spectra with high signal-to-noise ratios. The Ba and Eu abundances were derived using synthetic spectra, including hyperfine structure. We find no significant difference in the abundances of s-or r-process neutron-capture elements between clump giants and ascending-branch giants selected by us earlier. We also analyze the relation between the abundances of neutron-capture elements and [Fe/H]. Description: Spectra of the program stars were acquiered with the 1.93m telescope of the Haute-Provence Observatory (France) equipped with the ELODIE echelle spectrometer. The spectrometer's resolution was R=42000, the wavelength interval studied 4400Å-6800Å, and the signal-to-noise ratios of the order of 100-350. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 68 171 HD numbers, Teff, logg, evolutionary stages (ES), [Fe/H], and [A/Fe]
See also: J/AZh/77/96 : Abundances in Hyades red giants (Boyarchuk+, 2000) J/AZh/81/658 : Equivalent widths of 9 barium stars (Antipova+, 2004) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD number 8- 11 I4 K Teff Effective temperature 13- 16 F4.2 [cm/s2] logg Surface gravity 18- 20 A3 --- ES Evolutionnary stage, as CL = clump giant or RGB = ascending-giant branch 22- 26 F5.2 [Sun] [Fe/H] Metallicity 28- 32 F5.2 [Sun] [Y/Fe] ?=- Y (Z=39) abundance, relative to Fe 34- 38 F5.2 [Sun] [Ba/Fe] ?=- Ba (Z=56) abundance, relative to Fe 40- 44 F5.2 [Sun] [La/Fe] ?=- La (Z=57) abundance, relative to Fe 46- 50 F5.2 [Sun] [Ce/Fe] ?=- Ce (Z=58) abundance, relative to Fe 52- 56 F5.2 [Sun] [Pr/Fe] ?=- Pr (Z=59) abundance, relative to Fe 58- 62 F5.2 [Sun] [Nd/Fe] ?=- Nd (Z=60) abundance, relative to Fe 64- 68 F5.2 [Sun] [Eu/Fe] ?=- Eu (Z=63) abundance, relative to Fe
History: From electronic version of the journal
(End) Veta Avedisova [INASAN], Patricia Vannier [CDS] 08-Jan-2008
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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