Publication type: Refereed

  • Publication
    An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy
    Variable x-ray and γ-ray emission is characteristic of the most extreme physical processes in the universe. We present multiwavelength observations of a unique...
  • Publication
    An extremely wide and very low-mass pair with common proper motion. Is it representative of a nearby halo stream?
    Aims: We describe the discovery of an extremely wide pair of low-mass stars with a common large proper motion and discuss their possible membership in a...
  • Publication
    An Hermitian Method for the Solution of Polarized Radiative Transfer Problems
    Spectral synthesis calculations in stellar (magnetized) atmospheres are based on the solution of the radiative transfer equation (RTE) for polarized light. The...
  • Publication
    An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006
    We present the results from a Hubble Space Telescope ACS study of the supernovae (SNe) associated with gamma-ray bursts (GRBs) 040924 (z=0.86) and 041006 (z=0...
  • Publication
    An HST/WFPC2 survey of bright young clusters in M 31. IV. Age and mass estimates
    Aims: We present the main results of an imaging survey of possible young massive clusters (YMC) in M 31 performed with the Wide Field and Planetary Camera 2...
  • Publication
    An HST/WFPC2 survey of bright young clusters in M31. I. VdB0, a massive star cluster seen at t ≃ 25 Myr
    Aims: We introduce our imaging survey of possible young massive globular clusters in M31 performed with the Wide Field and Planetary Camera 2 (WFPC2) on the...
  • Publication
    An hydrodynamical model of the barred galaxy NGC 5850
    We present the results of hydrodynamical model calculations of the barred galaxy NGC 5850 and compare to HI observations. The models assume a mass distribution...
  • Publication
    An Hα Nuclear Spiral Structure in the E0 Active Galaxy Arp 102B
    We report the discovery of a two-armed mini-spiral structure within the inner kiloparsec of the E0 LINER/Seyfert 1 galaxy Arp 102B. The arms are observed in Hα...
  • Publication
    An idealized mechanism for the orbital migration of protoplanets
    We report how the action of radiation forces on small solid particles in a circumstellar disk could induce a suitable mechanism for orbital migration of...