Astrophysical: Techniques

  • Publication
    A young binary brown dwarf in the R-CrA star formation region
    We present imaging and spectroscopic observations with HST (WFPC2, ACS/HRC and STIS), VLT (FORS2) and Keck (HIRES) of the dM 8 ultra-cool dwarf DENIS-P J185950...
  • Publication
    A young spectroscopic binary in a quintuple system part of the Local Association
    Context. Double-lined spectroscopic (SB2) binaries allow us to obtain a direct determination of the masses of their components, which is essential to test...
  • Publication
    Absolute dimensions and apsidal motion of the eclipsing binaries V889 Aquilae and V402 Lacertae
    Context. Double-lined eclipsing binaries allow the direct determination of masses and radii, which are key for testing stellar models. With the launch of the...
  • Publication
    Absolute motions of globular clusters. II. HST astrometry and VLT radial velocities in NGC 6397
    In this paper we present a new, accurate determination of the three components of the absolute space velocity of the Galactic globular cluster NGC 6397 (l≃338°...
  • Publication
    Absorption Line Mapping with OSIRIS Tunable Filters: A Pilot Study
    We demonstrate in this work that it is possible to derive spectra of integrated absorption lines for any type stellar system using the GTC/OSIRIS Tunable...
  • Publication
    Abundance trend with condensation temperature for stars with different Galactic birth places
    Context. During the past decade, several studies reported a correlation between chemical abundances of stars and condensation temperature (also known as Tc...
  • Publication
    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 Atmospheric Parameters at Moderate Resolution Using Spectral Indices: Preliminary Application to the MARVELS Survey
    Studies of Galactic chemical, and dynamical evolution in the solar neighborhood depend on the availability of precise atmospheric parameters (effective...
  • Publication
    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...