Astrophysical: Luminosity function

  • Publication
    12 new substellar members in Taurus. Clues for substellar formation models
    Recent studies of the substellar population in the Taurus cloud have revealed a deficit of brown dwarfs compared to the Trapezium cluster population (citealt...
  • Publication
    A census of very-low-mass stars and brown dwarfs in the σ Orionis cluster
    Context: The knowledge of the initial mass function (IMF) in open clusters constitutes one way of constraining the formation of low-mass stars and brown dwarfs...
  • Publication
    A comparison of galaxy group luminosity functions from semi-analytic models
    Semi-analytic models (SAMs) are currently one of the primary tools with which we model statistically significant ensembles of galaxies. The underlying physical...
  • Publication
    A Constraint on Brown Dwarf Formation Via Ejection: Radial Variation of the Stellar and Substellar Mass Function of the Young Open Cluster IC 2391
    We present the stellar and substellar mass function (MF) of the open cluster IC 2391, plus its radial dependence, and use this to put constraints on the...
  • Publication
    A Hubble Space Telescope Advanced Camera for Surveys Search for Brown Dwarf Binaries in the Pleiades Open Cluster
    We present the results of a high-resolution imaging survey for brown dwarf binaries in the Pleiades open cluster. The observations were carried out with the...
  • Publication
    A large spectroscopic sample of L and T dwarfs from UKIDSS LAS: peculiar objects, binaries, and space density
    We present the spectroscopic analysis of a large sample of late-M, L, and T dwarfs from the United Kingdom Deep Infrared Sky Survey. Using the YJHK photometry...
  • Talk
    A large, multi-epoch H-alpha survey at z=2.23, 1.47, 0.84 & 0.40: the 11Gyr evolution of star-forming galaxies from HiZELS
    I will present new deep and wide narrow-band surveys undertaken with UKIRT, Subaru and the VLT; a unique combined effort to select large, robust samples of H...
  • Publication
    A possible origin of the mass-metallicity relation of galaxies
    Observations show that galaxies follow a mass-metallicity relation over a wide range of masses. One currently favoured explanation is that less massive galaxies...
  • Publication
    A search for substellar members in the Praesepe and σ Orionis clusters
    We have conducted deep photometric searches for substellar members of the Praesepe (0.5-1 Gyr) and σ Orionis (3 Myr) star clusters using the Sloan i' and z'...