Context. The primordial nature of the Spite plateau is at odds with the WMAP satellite measurements, implying a primordial Li production at least three times higher than observed. It has also been suggested that A(Li) might exhibit a positive correlation with metallicity below [Fe/H] ~ -2.5. Previous samples studied comprised few stars below [Fe/H]
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The metal-poor end of the Spite plateau. I. Stellar parameters, metallicities, and lithium abundancesSbordone, L. et al.112010
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The metallicity distributions in high-latitudes with SDSS
We present metallicities and their variations with different parameters for 36 high-latitude fields covering Galactic longitudes 0° < l ⩽ 360°. The metallicities for relatively short vertical distances (z < 2.5 kpc) show systematic fluctuations with Galactic longitude, similar to those of the thick-disc scaleheight, which may be interpreted as
Ak, S. et al.Fecha de publicación:
112007 -
The Mid-Infrared Emission of Seyfert Galaxies: A New Analysis of ISOCAM Data
We present mid-infrared data of a sample of 57 AGNs obtained with the instrument ISOCAM on board the Infrared Space Observatory (ISO) satellite. The images were obtained through the LW2 (6.75 μm) and LW7 (9.62 μm) filters. This is a new analysis of the Clavel et al. galaxy sample, which is divided into 26 type 1 (1.5) Seyfert galaxies, plus three
Ramos Almeida, C. et al.Fecha de publicación:
112007 -
The Milky Way's Circular-velocity Curve between 4 and 14 kpc from APOGEE data
We measure the Milky Way's rotation curve over the Galactocentric range 4 kpc
Bovy, Jo et al.Fecha de publicación:
112012 -
The Missing Satellites of the Magellanic Clouds? Gaia Proper Motions of the Recently Discovered Ultra-faint Galaxies
According to LCDM theory, hierarchical evolution occurs on all mass scales, implying that satellites of the Milky Way should also have companions. The recent discovery of ultra-faint dwarf galaxy candidates in close proximity to the Magellanic Clouds provides an opportunity to test this theory. We present proper motion (PM) measurements for 13 of
Kallivayalil, Nitya et al.Fecha de publicación:
112018 -
The morphology and luminosity function of the Galactic bulge from TMGS star counts
The bulge of the Galaxy is analyzed by inverting K-band star counts from the Two-Micron Galactic Survey in a number of off-plane regions. A total area of about 75 sq deg of sky is analyzed. Assuming a nonvariable luminosity function within the bulge, we derive the top end of the K-band luminosity function and the stellar density function, whose
Lopez-Corredoira, M. et al.Fecha de publicación:
111997