Astrophysical: Local Group

  • Publication
    A 2MASS All-Sky View of the Sagittarius Dwarf Galaxy. V. Variation of the Metallicity Distribution Function along the Sagittarius Stream

    We present reliable measurements of the metallicity distribution function (MDF) at different points along the tidal stream of the Sagittarius (Sgr) dwarf...

  • Publication
    A DECam view of the diffuse dwarf galaxy Crater II - Variable stars

    Time series observations of a single dithered field centred on the diffuse dwarf satellite galaxy Crater II were obtained with the Dark Energy Camera (DECam) at...

  • Publication
    A DECam view of the diffuse dwarf galaxy Crater II: the colour-magnitude diagram

    We present a deep Blanco/DECam colour-magnitude diagram (CMD) for the large but very diffuse Milky Way satellite dwarf galaxy Crater II. The CMD shows only old...

  • Publication
    A deep narrowband survey for planetary nebulae at the outskirts of M 33

    Context. Planetary nebulae (PNe) are excellent tracers of stellar populations with low surface brightness, and therefore provide a powerful method to detect and...

  • Talk
    A large spectroscopic survey facility at GTC for the next decade

    In the next decade astronomers will attempt to constrain the nature of dark matter, dark energy and the (perhaps inflationary) processes which generated...

  • Publication
    A New View of the Dwarf Spheroidal Satellites of the Milky Way from VLT FLAMES: Where Are the Very Metal-poor Stars?

    As part of the Dwarf galaxies Abundances and Radial-velocities Team (DART) program, we have measured the metallicities of a large sample of stars in four nearby...

  • Publication
    A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822

    We present a detailed photometric study of the dwarf irregular galaxy NGC 6822 aimed at investigating the properties of its stellar populations and, in...

  • Publication
    A unified model for age-velocity dispersion relations in Local Group galaxies: disentangling ISM turbulence and latent dynamical heating

    We analyse age-velocity dispersion relations (AVRs) from kinematics of individual stars in eight Local Group galaxies ranging in mass from Carina (M* ˜ 106 M⊙)...

  • Publication
    A VLT/FORS2 spectroscopic survey of individual stars in a transforming dwarf galaxy

    Understanding the properties of dwarf galaxies is important not only to put them in their proper cosmological context, but also to understand the formation and...