Astrophysical: Techniques

  • Publication
    NIRPS joining HARPS at ESO 3.6 m: On-sky performance and science objectives
    Context. The Near-InfraRed Planet Searcher (NIRPS) is a high-resolution, high-stability near-infrared (NIR) spectrograph equipped with an adaptive optics (AO)...
  • Publication
    No direct coupling between bending of galaxy disc stellar age and light profiles
    We study the stellar properties of 44 face-on spiral galaxies from the Calar Alto Legacy Integral Field Area survey via full spectrum fitting techniques. We...
  • Publication
    No random transits in CHEOPS observations of HD 139139
    Context. The star HD 139139 (a.k.a. `the Random Transiter') is a star that exhibited enigmatic transit-like features with no apparent periodicity in K2 data...
  • Publication
    Nodal precession of a hot Jupiter transiting the edge of a late A-type star TOI-1518
    TOI-1518b, a hot Jupiter around a late A-type star, is one of the few planetary systems that transit the edge of the stellar surface (the impact parameter b ~ 0...
  • Publication
    Nodal precession of WASP-33b for 11 yr by Doppler tomographic and transit photometric observations
    WASP-33b, a hot Jupiter around a hot star, is a rare system in which nodal precession has been discovered. We updated the model for the nodal precession of WASP...
  • Publication
    Noise from undetected sources in Dark Energy Survey images
    For ground-based optical imaging with current CCD technology, the Poisson fluctuations in source and sky background photon arrivals dominate the noise budget...
  • Publication
    Noise properties of the CoRoT data. A planet-finding perspective
    In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet-finding channel, with a particular...
  • Publication
    Non-local thermodynamic equilibrium inversions of the Si I 10827 Å spectral line
    Inferring the coupling of different atmospheric layers requires observing spectral lines sensitive to the atmospheric parameters, particularly the magnetic...
  • Publication
    Non-LTE abundance corrections for late-type stars from 2000 Å to 3 µm. I. Na, Mg, and Al
    Context. It is well known that cool star atmospheres depart from local thermodynamic equilibrium (LTE). Making an accurate abundance determination requires...