Astrofísicas: Evolución estelar

  • Publicación
    A 4 Gyr M-dwarf Gyrochrone from CFHT/MegaPrime Monitoring of the Open Cluster M67
    We present stellar rotation periods for late K- and early M-dwarf members of the 4 Gyr old open cluster M67 as calibrators for gyrochronology and tests of...
  • Publicación
    A New Class of Roche Lobe-filling Hot Subdwarf Binaries
    We present the discovery of the second binary with a Roche lobe-filling hot subdwarf transferring mass to a white dwarf (WD) companion. This 56 minute binary...
  • Publicación
    A new proto-planetary nebula
    Low and high resolution spectra of IRAS 22568 + 6141 have been obtained. Physical parameters and abundances and flux densities are given for the object. The...
  • Publicación
    A spectrophotometric study of the peculiar young open cluster Berkeley 87
    A spectrophotometric study of the peculiar open cluster Berkeley 87 is presented; the measurements show that most of the members are young, heavily reddened OB...
  • Publicación
    Absolute parameter determination in low-mass eclipsing binaries - Radiative parameters for BH Vir, ZZ UMA and CR CAS
    A new uvby and H-beta monitoring program of low mass eclipsing binaries is currently being carried out in the framework of a 5-yr observational program which...
  • Publicación
    Abundance gradient for 13 planetary nebulae in the Galaxy
    Via optical low-resolution long slit spectroscopy conducted at the 2.5 m INT in La Palma, He, O, N, Ne, A, and S abundances in 13 extended PN were calculated...
  • Publicación
    An empirical approach to the location of the theoretical isochrones in the observational plane
    A new empirical calibration of the (B-V) index versus the three fundamental stellar parameters T(eff), (Fe/H), and log g is presented whose range of validity is...
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    An improved evolutionary model for stellar population applied to NGC 2903
    The revised physical assumptions incorporated into a previously published evolutionary model for stellar population synthesis in galaxies (Casuso et al., 1989)...
  • Publicación
    APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields
    In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology...