Astrophysical: Radial velocity

  • Publication
    Spectral and radial velocity studies of 5 northern central stars of planetary nebulae
    Spectrograms of five bright northern central stars of planetary nebulae (CSPN) are compiled in order to provide spectral descriptions of these stars, with...
  • Publication
    TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images
    We present the discovery and characterization of five hot and warm Jupiters—TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC...
  • Publication
    TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935
    We present the discovery of two nearly identically sized sub-Neptune transiting planets orbiting HD 63935, a bright (V = 8.6 mag), Sun-like (T eff = 5560 K)...
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    The cataclysmic variable SS Cygni
    A general panorama of SS Cygni is presented. The paper first describes the CV cataclysmic variables and the current theories which attempt to describe their...
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    The contribution to population in ellipticals of blue stragglers - A test of their origin
    An observational test of the binary hypothesis for the origin of the blue straggler (BS) stars has been performed searching for radial velocity variables among...
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    The Discovery and Follow-up of Four Transiting Short-period Sub-Neptunes Orbiting M Dwarfs
    Sub-Neptunes with radii of 2–3 R ⊕ are intermediate in size between rocky planets and Neptune-sized planets. The orbital properties and bulk compositions of...
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    The galactic wind in the circum-nuclear zone of NGC 6946
    Using the H-II region H-alpha emission detected in high-resolution long slit spectra of the normal spiral NGC 6946 out to 6 kpc from the center, and along 8...
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    The Hades RV Programme With Harps-N@TNG GJ 3998: An Early M-Dwarf Hosting a System of Super-Earths
    Many efforts to detect Earth-like planets around low-mass stars are presently devoted in almost every extra-solar planetsearch. M dwarfs are considered ideal...
  • Publication
    The kinematics and morphology of NGC 520: One, two, or three galaxies
    The peculiar galaxy NGC 520 (Arp 157) is often interpreted as an interacting pair of galaxies. The identification of the two bulges and overall morphology of...