A spectroscopic analysis of the G8V star Tau CET

Bibcode
1989A&A...210..211A
Arribas, S.; Crivellari, L.
Referencia bibliográfica

Astronomy and Astrophysics (ISSN 0004-6361), vol. 210, no. 1-2, Feb. 1989, p. 211-224.

Fecha de publicación:
2
1989
Número de autores
2
Número de autores del IAC
1
Número de citas
13
Número de citas referidas
13
Descripción
The physical parameters of Tau Cet are analyzed based on new and high-quality data. The effective temperature is determined to be 5250 + or - 50 K. The discrepancy of the abundance inferred from the Fe I lines with the lowest excitation cannot be explained by errors either in atomic or stellar parameters and implies the need for models incorporating non-LTE and/or a more reliable UV opacity. The obtained abundances for the alpha-particle elements exceed that of the Fe group by 0.2 dex, in complete agreement with previous results for metal-poor dwarfs of the Galactic disk population. The microturbulence value is found to be 1.1 + or - 0.1 km/s. The surface gravity value is determined to be 1.0 + or - 0.3 solar mass.
Tipo
Con árbitro
Estrellas G

Te puede interesar

  • Con árbitro
    Stellar halo density with LAMOST K and M giants

    Aims: We derive the morphology of the stellar component in the outer halo volume, and search for possible overdensities due to substructures therein. Methods: We made use of some of the data releases of the spectroscopic survey LAMOST DR8-DR9 in tandem with distance determinations for two subsamples, that is, of K-giants and M-giants, respectively

    López-Corredoira, M. et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024A&A...684A.135L
    Número de citas
    1
  • Con árbitro
    Euclid preparation. XXXVI. Modelling the weak lensing angular power spectrum

    This work considers which higher order modeling effects on the cosmic shear angular power spectra must be taken into account for Euclid. We identified the relevant terms and quantified their individual and cumulative impact on the cosmological parameter inferences from Euclid. We computed the values of these higher order effects using analytic

    Euclid Collaboration et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024A&A...684A.138E
    Número de citas
    4
  • Con árbitro
    The discovery space of ELT-ANDES. Stars and stellar populations

    The ArmazoNes high Dispersion Echelle Spectrograph (ANDES) is the optical and near-infrared high-resolution echelle spectrograph envisioned for the Extremely Large Telescope (ELT). We present a selection of science cases, supported by new calculations and simulations, where ANDES could enable major advances in the fields of stars and stellar

    Roederer, Ian U. et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024ExA....57...17R
    Número de citas
    0