Publications

  • STEPARSYN: A Bayesian code to infer stellar atmospheric parameters using spectral synthesis

    Context. STEPARSYN is an automatic code written in Python 3.X designed to infer the stellar atmospheric parameters Teff, log g, and [Fe/H] of FGKM-type stars following the spectral synthesis method. Aims: We present a description of the STEPARSYN code and test its performance against a sample of late-type stars that were observed with the HERMES

    Tabernero, H. M. et al.

    Advertised on:

    1
    2022
  • TESS Eclipsing Binary Stars. I. Short-cadence Observations of 4584 Eclipsing Binaries in Sectors 1-26

    In this paper we present a catalog of 4584 eclipsing binaries observed during the first two years (26 sectors) of the TESS survey. We discuss selection criteria for eclipsing binary candidates, detection of hitherto unknown eclipsing systems, determination of the ephemerides, the validation and triage process, and the derivation of heuristic

    Prša, Andrej et al.

    Advertised on:

    1
    2022
  • The building up of observed stellar scaling relations of massive galaxies and the connection to black hole growth in the TNG50 simulation

    We study how mock-observed stellar morphological and structural properties of massive galaxies are built up between $z$ = 0.5 and $z$ = 3 in the TNG50 cosmological simulation. We generate mock images with the properties of the CANDELS survey and derive Sersic parameters and optical rest-frame morphologies as usually done in the observations

    Varma, S. et al.

    Advertised on:

    1
    2022
  • TOI-2257 b: A highly eccentric long-period sub-Neptune transiting a nearby M dwarf

    Context. Thanks to the relative ease of finding and characterizing small planets around M-dwarf stars, these objects have become cornerstones in the field of exoplanet studies. The current paucity of planets in long-period orbits around M dwarfs makes such objects particularly compelling as they provide clues about the formation and evolution of

    Schanche, N. et al.

    Advertised on:

    1
    2022
  • Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020

    We report multiwavelength observations of the gravitationally lensed blazar QSO B0218+357 in 2016-2020. Optical, X-ray, and GeV flares were detected. The contemporaneous MAGIC observations do not show significant very high energy (VHE; ≳100 GeV) gamma-ray emission. The lack of enhancement in radio emission measured by The Owens Valley Radio

    Acciari, V. A. et al.

    Advertised on:

    2
    2022
  • New constraints on the minimum mass for thermonuclear lithium burning in brown dwarfs

    The theory of substellar evolution predicts that there is a sharp mass boundary between lithium and non-lithium brown dwarfs, not far below the substellar-mass limit. The imprint of thermonuclear burning is carved on the surface lithium abundance of substellar-mass objects during the first few hundred million years of their evolution, leading to a

    Martín, E. L. et al.

    Advertised on:

    2
    2022