Journal: Astronomy and Astrophysics

  • Publication
    Discovery of a planet around the K giant star 4 Ursae Majoris
    For the past 3 years we have been monitoring a sample of 62 K giant stars using precise stellar radial velocity measurements with high accuracy taken at the...
  • Publication
    Discovery of a planetary nebula surrounding the symbiotic star DT Serpentis
    We report the discovery of a planetary nebula centered on the poorly studied symbiotic binary star DT Ser. In a few other symbiotic stars spatially resolved...
  • Publication
    Discovery of a substellar companion in the TESS light curve of the δ Scuti/γ Doradus hybrid pulsator HD 31221
    Context. Close-in, sub-stellar companions to δ Scuti type stars present a highly suitable testbed for examining how planetary-mass objects can influence stellar...
  • Publication
    Discovery of a very cool object with extraordinarily strong Hmathsf α emission
    We report on the finding of the strongest Hα emission - pseudoequivalent width of 705 Å- known so far in a young, late type dwarf. This object, named as S Ori...
  • Publication
    Discovery of a very luminous megamaser during a radio flare in the Seyfert 2 galaxy Mrk 348
    We report the detection of a new H_2O megamaser in the Seyfert 2 galaxy Mrk 348 with the MPIfR 100 m telescope in Effelsberg. With an apparent isotropic...
  • Publication
    Discovery of a widely separated binary system of very low mass stars
    We report our discovery of a nearby wide binary system, LP 714-37 AB. Phan-Bao et al. identified LP 714-37 as a mid-M dwarf during a cross-identification of the...
  • Publication
    Discovery of a young and massive stellar cluster. Spectrophotometric near-infrared study of Masgomas-1
    Context. Recent near-infrared data have contributed to the discovery of new (obscured) massive stellar clusters and massive stellar populations in previously...
  • Publication
    Discovery of an old nova remnant in the Galactic globular cluster M 22
    A nova is a cataclysmic event on the surface of a white dwarf in a binary system that increases the overall brightness by several orders of magnitude. Although...
  • Publication
    Discovery of close binary central stars in the planetary nebulae NGC 6326 and NGC 6778
    We present observations proving the close binary nature of the central stars belonging to the planetary nebulae (PNe) NGC 6326 and NGC 6778. Photometric...