The star formation history of Leo I

Bibcode
1998mcdg.proc..147G
Gallart, C.; Aparicio, A.; Freedman, W.; Bertelli, G.; Chiosi, C.
Referencia bibliográfica

The Magellanic Clouds and Other Dwarf Galaxies, Proceedings of the Bonn/Bochum-Graduiertenkolleg Workshop, held at the Physikzentrum Bad Honnef, Germany, January 19-22, 1998, Eds.: T. Richtler and J.M. Braun, Shaker Verlag, Aachen, ISBN 3-8265-4457-9, p. 147-150,

Fecha de publicación:
12
1998
Número de autores
5
Número de autores del IAC
1
Número de citas
2
Número de citas referidas
2
Descripción
We present results on the star formation history of the Local Group dSph galaxy Leo I, obtained through the analysis of its deep HST color-magnitude diagram (CMD) using model CMDs computed from stellar evolutionary models. Our results show unambiguously that Leo I experienced a major increase of its star formation rate from about 6 Gyr ago to 2 Gyr ago. Some prior star formation possibly ocurred in another discrete episode of enhanced activity lasting 2-3 Gyr. Finally, a low level of star formation continued until 500-200 Myr ago.
Tipo
Sin árbitro

Te puede interesar

  • Sin árbitro
    Workshop summary: Kaons@CERN 2023

    Kaon physics is at a turning point - while the rare-kaon experiments NA62 and KOTO are in full swing, the end of their lifetime is approaching and the future experimental landscape needs to be defined. With HIKE, KOTO-II and LHCb-Phase-II on the table and under scrutiny, it is a very good moment in time to take stock and contemplate about the

    Anzivino, G. et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024EPJC...84..377A
    Número de citas
    0
  • Sin árbitro
    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~0.9) among hot Jupiters around hot stars (Cabot et al. 2021). The host star's high rotation speed (Vsini s~85 km s -1) and the planet's nearly polar orbit (λ~120 deg) may cause a nodal

    Watanabe, Noriharu et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024ESS.....561705W
    Número de citas
    0
  • Sin árbitro
    Observational evidence of different formation mechanisms of Solar System-type architectures across spectral types

    Despite being the most abundant classes of known exoplanets, super-Earths and mini-Neptunes are absent in our Solar System, and the exact reason for this is still unknown. Some models suggest that cold-Jupiters play a major role in the formation of inner low-mass planets. This could explain the current architecture of our Solar System, and the

    Pinamonti, Matteo et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024ESS.....560801P
    Número de citas
    0
Volver