Astrofísicas: Acreción

  • Publicación
    Contribution of the disk emission to the broad emission lines in AGNs: Two-component model
    We present an investigation of the structure of the emission line region in a sample of 12 single-peaked Active Galactic Nuclei (AGNs). Using the high...
  • Publicación
    Cooling of the quasi-persistent neutron star X-ray transients KS 1731-260 and MXB 1659-29
    We present Chandra and XMM-Newton X-ray observations that monitor the neutron star cooling of the quasi-persistent neutron star X-ray transients KS 1731-260 and...
  • Publicación
    CoRoT photometry and high-resolution spectroscopy of the interacting eclipsing binary AU Monocerotis
    Analyses of very accurate CoRoT space photometry, past Johnson V photoelectric photometry and high-resolution echelle spectra led to the determination of...
  • Publicación
    Correlated optical/X-ray long-term variability in LMXB 4U 1636-536
    We have conducted a 3-month programme of simultaneous optical, soft and hard X-ray monitoring of the LMXB 4U 1636-536/V801 Ara using the SMARTS 1.3-m telescope...
  • Publicación
    Correlated X-Ray and Optical Variability in V404 Cygni in Quiescence
    We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux varied dramatically by a factor of >~20 during a 60 ks...
  • Publicación
    COYOTES II: SPOT properties and the origin of photometric period variations in T Tauri stars.
    We present the results of a new multi-site campaign (COYOTES II) to monitor the light variations of T Tauri stars (TTS) of the Taurus-Auriga dark cloud. The...
  • Publicación
    Delimiting the black hole mass in the X-ray transient MAXI J1659-152 with Hα spectroscopy
    MAXI J1659-152 is a 2.4 h orbital period X-ray dipping transient black hole candidate. We present spectroscopy of its I ≍ 23 quiescent counterpart, where we...
  • Publicación
    Deriving the dynamical masses of Ultra-Luminous X-ray Sources with OSIRIS
    Ultra Luminous X-ray Sources (ULXs) are extragalactic X-ray point sources with L_X ˜ 10^39-10^41 erg s^-1 discovered in the 80s with the Einstein satellite and...
  • Noticia
    Descubren continuos vientos infrarrojos durante la erupción de un agujero negro de masa estelar
    Un equipo de investigadores del Instituto de Astrofísica de Canarias (IAC) ha observado por primera vez la emisión constante en el rango infrarrojo de vientos...