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J/ApJ/679/1549  Spectroscopy of metal-poor star CS 17435-00532 (Roederer+, 2008)

The Hobby-Eberly telescope Chemical Abundances of Stars in the Halo (CASH) project. I. The lithium-, s-, and r-enhanced metal-poor giant HKII 17435-00532. Roederer I.U., Frebel A., Shetrone M.D., Allende Prieto C., Rhee J., Gallino R., Bisterzo S., Sneden C., Beers T.C., Cowan J.J. <Astrophys. J., 679, 1549-1565 (2008)> =2008ApJ...679.1549R
ADC_Keywords: Equivalent widths ; Stars, metal-deficient ; Stars, giant Keywords: nuclear reactions, nucleosynthesis, abundances - stars: abundances - stars: individual (HKII 17435-00532) - stars: Population II Abstract: We present the first detailed abundance analysis of the metal-poor giant HKII 17435-00532. This star was observed as part of the University of Texas long-term project Chemical Abundances of Stars in the Halo (CASH). A spectrum was obtained with the High Resolution Spectrograph (HRS) on the Hobby-Eberly Telescope with a resolving power of R∼15000. Our analysis reveals that this star may be located on the red giant branch, red horizontal branch, or early asymptotic giant branch. We find that this metal-poor ([Fe/H]=-2.2) star has an unusually high lithium abundance [logε(Li)=+2.1], mild carbon ([C/Fe]=+0.7) and sodium ([Na/Fe]=+0.6) enhancement, as well as enhancement of both s-process ([Ba/Fe]=+0.8) and r-process ([Eu/Fe]=+0.5) material. Description: The HK-II survey (Rhee, 2001PASP..113.1569R) originated as an extension of the original HK objective-prism survey of Beers et al. (1985, Cat. J/AJ/90/2089; 1992, Cat. J/AJ/103/1987). The star HKII 17435-00532 was observed on 2007 February 9 and 28 with the High Resolution Spectrograph at the HET at McDonald Observatory. The spectral coverage is 4120-7850Å, with a small break from 5930 to 6030Å resulting from the gap between the blue and red CCDs of the HRS. One 10 minute exposure was taken on each night. Objects: -------------------------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------------------------- 11 49 03.3 +16 58 41 NAME HKII 17435-00532 = BPS CS 17435-0532 -------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 35 141 Equivalent width measurements
See also: J/A+A/509/A93 : Carbon-enhanced metal-poor stars (Masseron+, 2010) J/AJ/108/268 : HK survey emission-line candidates positions (Beers+ 1994) J/AJ/108/538 : Metal-poor MS stars UBV photometry (Preston+ 1994) J/AJ/103/1987 : Stars of very low metal abundance (Beers+ 1992) J/PASP/103/973 : Photoelectric UBV from HK survey. II. (Doidinis+ 1991) J/AJ/90/2089 : Stars of very low metal abundance. I (Beers+, 1985) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Ion Species identification 7- 8 I2 --- Z Atomic number 10- 16 F7.2 0.1nm Wave Wavelength 18- 22 F5.3 eV ExPot Excitation potential 24- 29 F6.3 [-] loggf Log of the oscillator strength 31- 35 F5.1 10-13m EW Equivalent width in milliAngstroms
History: From electronic version of the journal References: Hollek et al. Paper II. 2011ApJ...742...54H Cat. J/ApJ/742/54
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-Oct-2010
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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