Journal: Astronomy and Astrophysics

  • Publication
    The stellar population of the star-forming region G61.48+0.09
    Context: We present the results of a near-infrared photometric and spectroscopic study of the star-forming region G61.48+0.09. Aims: The purpose of this study...
  • Publication
    The strange case of Na I in the atmosphere of HD 209458 b. Reconciling low- and high-resolution spectroscopic observations
    Aims: We aim to investigate the origin of the discrepant results reported in the literature about the presence of Na I in the atmosphere of HD 209458 b, based...
  • Publication
    The structure and kinematics of the HH 444 photoionized jet in the sigma Orionis region
    HH 444 is a stellar jet which is immersed in the H II region photoionized by sigma Orionis. Spatially resolved, high spectral resolution observations of the Hα...
  • Publication
    The structure and kinematics of the unusual bipolar outflow NGC 7026.
    High and low resolution spectroscopy, together with narrow and broad band imaging have been acquired for the unusual outflow source NGC 7026. We find evidence...
  • Publication
    The structure models for galaxy clustering.
    The models for galaxy clustering in which galaxies are identified with peaks on the mass density field smoothed on an appropriate scale are plagued by some...
  • Publication
    The structure of galactic disks. Studying late-type spiral galaxies using SDSS
    Using imaging data from the SDSS survey, we present the g' and r' radial stellar light distribution of a complete sample of ~90 face-on to intermediate inclined...
  • Publication
    The structure of the interstellar gas towards stars in the globular cluster NGC 6541
    Observations are presented of high resolution interstellar Na I D and K I (lambda 7699 Angstroms) line profiles towards 7 stars in the globular cluster NGC 6541...
  • Publication
    The substellar mass function in the central region of the open cluster Praesepe from deep LBT observations
    Context. Studies of the mass function (MF) of open clusters of different ages allow us to probe the efficiency with which brown dwarfs evaporate from clusters...
  • Publication
    The substellar mass function in σ Orionis. II. Optical, near-infrared and IRAC/Spitzer photometry of young cluster brown dwarfs and planetary-mass objects
    Aims:We investigate the mass function in the substellar domain down to a few Jupiter masses in the young σ Orionis open cluster (3±2 Ma, d = 360^+70_-60 pc)...