Publications

  • A new reference catalogue for the very metal-poor Universe: +150 OB stars in Sextans A

    Local Group (LG) very metal-poor massive stars are the best proxy for the First Stars of the Universe and fundamental to modelling the evolution of early galaxies. These stars may follow new evolutionary pathways restricted to very low metallicities, such as chemically homogeneous evolution (CHE). However, given the great distance leap needed to

    Lorenzo, M. et al.

    Advertised on:

    11
    2022
  • Estimating the atmospheric properties of 44 M dwarfs from SPIRou spectra

    We describe advances on a method designed to derive accurate parameters of M dwarfs. Our analysis consists in comparing high-resolution infrared spectra acquired with the near-infrared spectro-polarimeter SPIRou to synthetic spectra computed from MARCS model atmospheres, in order to derive the effective temperature (Teff), surface gravity (log g)

    Cristofari, P. I. et al.

    Advertised on:

    11
    2022
  • Solar-like oscillations and ellipsoidal variations in TESS observations of the binary 12 Boötis

    Binary stars in which oscillations can be studied in either or both components can provide powerful constraints on our understanding of stellar physics. The bright binary 12 Boötis (12 Boo) is a particularly promising system because the primary is roughly 60 per cent brighter than the secondary despite being only a few per cent more massive. Both

    Ball, Warrick H. et al.

    Advertised on:

    11
    2022
  • BACCHUS Analysis of Weak Lines in APOGEE Spectra (BAWLAS)

    Elements with weak and blended spectral features in stellar spectra are challenging to measure and require specialized analysis methods to precisely measure their chemical abundances. In this work, we have created a catalog of approximately 120,000 giants with high signal-to-noise Apache Point Observatory Galactic Evolution Experiment (APOGEE) Data

    Hayes, Christian R. et al.

    Advertised on:

    9
    2022
  • GJ 3090 b: one of the most favourable mini-Neptune for atmospheric characterisation

    We report the detection of GJ 3090 b (TOI-177.01), a mini-Neptune on a 2.9-day orbit transiting a bright (K = 7.3 mag) M2 dwarf located at 22 pc. The planet was identified by the Transiting Exoplanet Survey Satellite and was confirmed with the High Accuracy Radial velocity Planet Searcher radial velocities. Seeing-limited photometry and speckle

    Almenara, J. M. et al.

    Advertised on:

    9
    2022
  • How to plan your astronomy research paper in ten steps

    Scientific writing is an important skill for a career as a professional astrophysicist. However, very few researchers receive any formal training in how to write scientific research papers of high quality in an efficient manner. This Perspective is the first of a two-part self-help guide to scientific writing to address this skills gap. This part

    Chamba, Nushkia et al.

    Advertised on:

    9
    2022