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Abundances of Na, Mg and Al in nearby metal-poor stars
To determine the population membership of nearby stars we explore abundance results obtained for the light neutron- rich elements 23 Na and 27 Al in a small sample of moderately metal-poor stars.Expand
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Na, Mg and Al abundances as a population discriminant for nearby metal-poor stars
Aims. Parameters for 55 nearby metal-poor stars are determined using high-resolution spectroscopy. Together with similar data taken from a recent analysis, they are used to show trends of theirExpand
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LAMOST spectral survey — An overview
LAMOST (Large sky Area Multi-Object fiber Spectroscopic Telescope) is a Chinese national scientific research facility operated by National Astronomical Observatories, Chinese Academy of SciencesExpand
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THE TYPE IC HYPERNOVA SN 2002AP
Photometric and spectroscopic data of the energetic Type Ic supernova (SN) 2002ap are presented, and the properties of the SN are investigated through models of its spectral evolution and its lightExpand
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Lithium abundances for 185 main-sequence stars - galactic evolution and stellar depletion of lithium
We present a survey of lithium abundances in 185 main-sequence field stars with $5600 \la T_{\rm eff} \la 6600$ K and $-1.4 \la {\rm [Fe/H]} \la +0.2$ based on new measurements of the equivalentExpand
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The Abundance Patterns of Sirius and Vega
On the basis of high-resolution echelle spectra obtained with the Coude Echelle Spectrograph attached to the 2.16 m telescope at the Beijing Astronomical Observatory (Xinglong, China) for Sirius andExpand
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A non-local thermodynamic equilibrum study of scandium in the Sun
Aims. We investigate the formation of neutral and singly ionized scandium lines in the solar photospheres. The research is aimed at derive solar log gf e� (Sc) values for scandium lines, which willExpand
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HIGH-RESOLUTION SUBMILLIMETER MULTILINE OBSERVATIONS OF G19.61−0.23: SMALL-SCALE CHEMISTRY
We present the Submillimeter Array (SMA) observations of molecular lines at 330 and 340?GHz toward G19.61 ? 0.23. The SMA observations have a spatial resolution of ~2'' and a bandpass of 2?? 2?GHzExpand
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The Initial-Final Mass Relation among White Dwarfs in Wide Binaries
We present the initial-final mass relation derived from 10 white dwarfs in wide binaries that consist of a main-sequence star and a white dwarf. The temperature and gravity of each white dwarf wereExpand
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STATISTICAL EQUILIBRIUM OF COPPER IN THE SOLAR ATMOSPHERE
Non-local thermodynamic equilibrium (NLTE) line formation for neutral copper in the one-dimensional solar atmospheres is presented for the atomic model, including 96 terms of Cui and the ground stateExpand
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