• Publication
    Ambipolar filamentation of turbulent magnetic fields: a numerical simulation
    We present the results of a 2-D, two fluid (ions and neutrals) simulation of the ambipolar filamentation process, in which a magnetized, weakly ionized plasma...
  • Publication
    Amino acids in comets and meteorites: stability under gamma radiation and preservation of the enantiomeric excess
    Amino acids in Solar system bodies may have played a key role in the chemistry that led to the origin of life on Earth. We present laboratory studies testing...
  • Publication
    Ammonia-methane ratios from H-band near-infrared spectra of late-T and Y dwarfs
    Aims: Our goals are to investigate the relative absorption strengths of ammonia and methane using low-resolution H-band (1.5−1.7 microns) spectra obtained in...
  • Publication
    Ammonium-bearing phyllosilicate grains detected in Ryugu and Bennu samples via infrared spectroscopy
    Understanding the nature of nitrogen reservoirs in primitive small bodies is fundamental for tracing the evolution of volatiles in the early Solar System and...
  • Publication
    Amplitude and frequency variability of the pulsating DB white dwarf stars KUV 05134+2605 and PG 1654+160 observed with the Whole Earth Telescope
    We have acquired new time series photometry of the two pulsating DB white dwarf stars KUV 05134+2605 and PG 1654+160 with the Whole Earth Telescope. Additional...
  • Publication
    An absolute calibration of DENIS (deep near infrared southern sky survey)
    An absolute calibration of the DENIS photometric system is presented. It includes the determination of the overall transmission profiles in the 3 bands, namely...
  • Publication
    An Accreting Millisecond Pulsar with Black Hole-like X-Ray Variability: IGR J00291+5934
    IGR J00291+5934 is one of the seven accreting millisecond pulsars (AMPs) discovered so far. We report on the aperiodic timing and color analysis of its X-ray...
  • Publication
    An accretion disc in the broad-line radio galaxy 3C 390.3?
    The permitted broad component of the H-beta emission line in the broad-line radio galaxy (BLRG) 3C 390.3 presents a double-peaked structure similar to that seen...
  • Publication
    An accurate measure of the size of dark matter haloes using the size of galaxies
    The physically motivated definition of galaxy size proposed recently, linked to the farther location of the in situ star formation, considerably reduces the...