Journal: Astronomy and Astrophysics

  • Publication
    Abundances of iron-peak elements in 58 bulge spheroid stars from APOGEE
    Context. Stars presently identified in the bulge spheroid are probably very old, and their abundances can be interpreted as due to the fast chemical enrichment...
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    Abundances of Na, Mg and Al in stars with giant planets
    We present Na, Mg and Al abundances in a set of 98 stars with known giant planets, and in a comparison sample of 41 “single” stars. The results show that the [X...
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    Abundances of refractory elements in the atmospheres of stars with extrasolar planets
    Aims.This work presents a uniform and homogeneous study of chemical abundances of refractory elements in 101 stars with and 93 without known planetary...
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    Accretion disc winds imprint distinct signatures in the optical variability spectrum of black hole transients
    Quantifying the variability, measured as the root mean square (rms), of accreting systems as a function of energy is a powerful tool for constraining the...
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    Accretion processes in the galaxy cluster Hydra A/Abell 780
    Context. Clusters of galaxies evolve and accrete mass, mostly from small galaxy systems. Aims: Our aim is to study the velocity field of the galaxy cluster...
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    Accretion-induced flickering variability among symbiotic stars from space photometry with NASA TESS
    Context. Symbiotic binaries exhibit a wide range of photometric variability across different timescales. These changes can be attributed to factors such as...
  • Publication
    Accurate masses of very low mass stars. I. GL 570BC (0.6 M_sun+0.4 M_sun)
    We present very accurate individual masses (1.2% relative accuracy) for the two components of Gl 570BC, an interferometric and double-lined spectroscopic binary...
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    Accurate masses of very low mass stars. II. The very low mass triple system GL 866
    We present very accurate orbital parameters and mass measurements (2.4% accuracy) for the well known very low mass triple system Gl 866. We obtain first orbital...
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    Accurate masses of very low mass stars. III. 16 new or improved masses
    We have obtained adaptive optics images and accurate radial velocities for 7 very low mass objects, In the course of a long term effort to determine accurate...