The abundance ratio of D:H in the interstellar medium can be derived either more directly from the UV absorption measurements of HD and H2 in the spectra of...
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PublicaciónLimits on the D:H ratio in the interstellar medium from molecular observations
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PublicaciónMass Models of the Milky Way and Estimation of Its Mass from the Gaia DR3 Data Set
We use data from the Gaia DR3 data set to estimate the mass of the Milky Way (MW) by analyzing the rotation curve in the range of distances 5 to 28 kpc. We...
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PublicaciónMass Models of the Milky Way and Estimation of Its Mass from the Gaia DR3 Data Set
We use data from the Gaia DR3 data set to estimate the mass of the Milky Way (MW) by analyzing the rotation curve in the range of distances 5 to 28 kpc. We...
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PublicaciónNear infrared stellar counts and a model of galactic distribution
A model of the galactic stellar distribution has been developed and the surface stellar densities in the near infrared are compared with observations along the...
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NoticiaObservan una gran corriente de marea en la galaxia del Sombrero
Según el modelo cosmológico más actualizado, las grandes galaxias espirales como la Vía Láctea crecieron absorbiendo galaxias menores en una especie de...
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PublicaciónOverview of the DESI Milky Way Survey
We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak...
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PublicaciónOxygen abundances in F-type stars of the Hyades and the Ursa Major group
We have derived the oxygen abundances of 50 F-type main-sequence stars, belonging to the Hyades open cluster, the Ursa Major group, and the field, using an NLTE...
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PublicaciónOxygen abundances in old disc and halo stars of the Galaxy
Intermediate resolution CCD spectra of the oxygen triplet at 7770 A have been analyzed to determine oxygen abundances in a sample of metal-deficient stars with...
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PublicaciónOxygen abundances in unevolved metal-poor stars - Interpretation and consequences
The oxygen abundance has been determined by analysis of the O I infrared triplet in 30 unevolved field stars of metallicities in the range Fe/H abundance ratio...