Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...159..239p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 159, no. 1-2, April 1986, p. 239-245.
Astronomy and Astrophysics
Astrophysics
6
Abundance, Dwarf Stars, Late Stars, Stellar Composition, Carbon, Helium, Line Spectra, Metallicity, Stellar Spectra
Scientific paper
The spectroscopic fine analysis of two field halo-dwarf stars, HD 99383 and HD 160617, based on high-dispersion spectrograms covering the region from 4000 to 5200 angstroms, is presented. The observations are summarized in a table, listing plate number, electronographic emulsion, julian day of the observation, wavelength range of the plates, and the mean heliocentric radial velocity derived from the line shift measurements for each spectrogram. The mean radial velocity obtained for each star (230 and 101 km/s respectively) is in good agreement with the values given by Carney in 1981 (223 and 104 km/s respectively). Absolute curves of growth of Fe I are given for both stars, along with derived atmospheric parameters. Also presented are equivalent widths and logarithmic abundances for the two stars, derived abundances of the elements with respect to the sun, and derived carbon abundances.
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