The stellar populations of the Milky Way satellites: the early Universe through the color-magnitude diagram

Bibcode
2001ApSSS.277..255G
DOI
10.1023/A:1012759306899
Gallart, Carme
Referencia bibliográfica

Astrophysics and Space Science Supplement, v. 277, p. 255-258 (2001).

Fecha de publicación:
0
2001
Número de autores
1
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
The Milky Way satellites offer the possibility of studying their star formation histories in great detail. Color-magnitude diagrams (CMDs) reaching the old main-sequence turnoffs, allow a careful modelling of their stellar populations using synthetic CMDs, and spectroscopy of the brightest stars, provides a direct measurement of their metallicity. Here I present new wide field, old main sequence turnoff photometry of the LMC and Fornax, and briefly discuss preliminary results of a CaII triplet spectroscopy study of metallicities of individual stars in Fornax.
Tipo
Con árbitro

Te puede interesar

  • Con árbitro
    Coronal and chromospheric activity of Teegarden's star
    Teegarden's star is a late-type M-dwarf planet host, typically showing only rather low levels of activity. In this paper we present an extensive characterisation of this activity at photospheric, chromospheric, and coronal levels. We specifically investigated TESS observations of Teegarden's star, which showed two very large flares with an
    Fuhrmeister, B. et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691A.208F
    Número de citas
    0
  • Con árbitro
    Accurate modeling of the forward-scattering Hanle effect in the chromospheric Ca I 4227 Å line
    Context. Measurable linear scattering polarization signals have been predicted and detected at the solar disk center in the cores of chromospheric lines. These forward-scattering polarization signals, which are of high interest for magnetic field diagnostics, have always been modeled either under the assumption of complete frequency redistribution
    Belluzzi, Luca et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691A.278B
    Número de citas
    0
  • Con árbitro
    Hints of auroral and magnetospheric polarized radio emission from the scallop-shell star 2MASS J05082729–2101444
    Scallop-shell stars, a recently discovered class of young M dwarfs, show complex optical light curves that are characterized by periodic dips as well as other features that are stable over tens to hundreds of rotation cycles. The origin of these features is not well-understood. 2MASS J05082729‑2101444 is a ∼25 Myr old scallop-shell star that was
    Kaur, Simranpreet et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691L..17K
    Número de citas
    0