Astrophysical: Techniques

  • Publication
    The K2-24 planetary system revisited by CHEOPS
    The planetary system K2-24 is composed of two transiting low-density Neptunians locked in an almost perfect 2:1 resonance and showing large transit time...
  • Publication
    The K2-ESPRINT Project III: A Close-in Super-Earth around a Metal-rich Mid-M Dwarf
    We validate a {R}p=2.32+/- 0.24{R}\oplus planet on a close-in orbit (P = 2.260455 ± 0.000041 days) around K2-28 (EPIC 206318379), a metal-rich M4-type dwarf in...
  • Publication
    The K2-ESPRINT Project IV. A Hot Jupiter in a Prograde Orbit with a Possible Stellar Companion
    We report on the detection and early characterization of a hot Jupiter in a three day orbit around K2-34 (EPIC 212110888), a metal-rich F-type star located in...
  • Publication
    The K2-ESPRINT project. VI. K2-105 b, a hot Neptune around a metal-rich G-dwarf
    We report on the confirmation that the candidate transits observed for the star EPIC 211525389 are due to a short-period Neptune-sized planet. The host star...
  • Publication
    The KELT-7b atmospheric thermal-inversion conundrum revisited with CHEOPS, TESS, and additional data
    Context. Early theoretical works suggested that ultrahot Jupiters have inverted temperature-pressure (T–P) profiles in the presence of optical absorbers, such...
  • Publication
    The Kepler Follow-up Observation Program. II. Stellar Parameters from Medium- and High-resolution Spectroscopy
    We present results from spectroscopic follow-up observations of stars identified in the Kepler field and carried out by teams of the Kepler Follow-up...
  • Publication
    The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf
    We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-size planets transiting L 98-59 (TOI-175, TIC 307210830)—a bright M...
  • Publication
    The lack of fast rotators in Cyg OB2: I. Insights from spectral reclassification of its B0 population
    Context. Cygnus OB2, located within the Cygnus X complex ─ one of the most active star-forming regions of the Galaxy ─ hosts hundreds of O- and B-type stars at...
  • Publication
    The Large Magellanic Cloud stellar content with SMASH. I. Assessing the stability of the Magellanic spiral arms
    The Large Magellanic Cloud (LMC) is the closest and most studied example of an irregular galaxy. Among its principal defining morphological features, its off...