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Spectroscopy of AB stars in halo
Reticon spectroscopy has been obtained for 224 high-latitude AB stars chosen from the Curtis Schmidt objective-prism survey of Preston and Schectamn. Additional spectra of... -
Hot subdwarf stars with Gaia DR2 and LAMOST DR7 data
Based on the Gaia DR2 catalog of hot subdwarf star candidates, we identified 1587 hot subdwarf stars with spectra in LAMOST DR7. We present atmospheric parameters for these... -
High-velocity stars in the Gal. halo from LAMOST & Gaia
In this paper, we report 591 high-velocity star candidates (HiVelSCs) selected from over 10 million spectra of Data Release 7 (DR7) of the Large Sky Area Multi-object Fiber... -
Highly likely members of the Sgr stream
Wrapping around the Milky Way, the Sagittarius stream is the dominant substructure in the halo. Our statistical selection method has allowed us to identify 106 highly likely... -
Milky Way halo stars ages and kinematics
We exploit the [Mg/Mn]-[Al/Fe] chemical abundance plane to help identify nearby halo stars in the 14th data release from the APOGEE survey that have been accreted on to the... -
Carbon-enhanced metal-poor stars
We revisit the observed frequencies of carbon-enhanced metal-poor (CEMP) stars as a function of the metallicity in the Galaxy, using data from the literature with available... -
Candidate halo wide binaries
We present an improved catalog of halo wide binaries compiled from an extensive literature search. Most of our binaries stem from the common proper motion binary catalogs by... -
Oxygen abundances of dwarf stars
Oxygen abundances of 67 dwarf stars in the metallicity range -1.6<[Fe/H]<-0.4 are derived from a non-LTE analysis of the 777nm OI triplet lines. These stars have precise... -
MW halo. III. Statistical chemical abundances
We find that the relative contribution of satellite galaxies accreted at high redshift to the stellar population of the Milky Way's smooth halo increases with distance, becoming... -
Stellar density map of the Milky Way
We map the stellar structure of the Galactic thick disk and halo by applying color-magnitude diagram (CMD) fitting to photometric data from the Sloan Extension for Galactic... -
LONEOS-I RR Lyrae stars
We present 838 ab-type RR Lyrae stars from the Lowell Observatory Near Earth Objects Survey Phase I (LONEOS-I). These objects cover 1430deg^2^ and span distances ranging from 3... -
Stars of very low metal abundance. I
An objective-prism and a narrowband interference filter have been used in combination on the Curtis Schmidt telescope at CTIO to conduct a search for extremely metal-poor stars.... -
Spectroscopy of hot stars in galactic halo
The paper presents spectroscopy for 769 hot stars from the HK objective-prism/interference-filter survey of Beers et al. (1985), 193 of which have also available broadband UBV... -
Dormant 33 solar-masses black hole
We announce the serendipitous discovery of a nearby (590pc) binary system composed of an old very metal-poor giant star orbiting a black hole with an estimated mass of... -
Blue Horizontal Branch stars catalog
Stars that are found on the blue horizontal-branch (BHB) evolved from low-mass stars that have completed their core hydrogen-burning main sequence (MS) stage and undergone the... -
Abundance analysis of HD 140283
HD 140283 is a reference subgiant that is metal poor and confirmed to be a very old star. The abundances of this type of old star can constrain the nature and nucleosynthesis... -
FeII, ZNI and SI abundances on halo stars
The table gives equivalent widths (in m{AA}) for 19 FeII lines, two ZnI lines, and four SI lines, as measured in high resolution VLT/UVES spectra of 34 metal-poor, main sequence... -
Extremely metal-poor giants equivalent widths
This paper reports detailed abundance analyses for four extremely metal-poor (XMP) giant stars with [Fe/H]<-3.8, based on high-resolution, high- S/N spectra from the ESO VLT...
