Astrophysical: Galaxies

  • Publication
    A new tidal scenario for double bar formation
    Double bars make up a significant fraction of barred galaxies. We propose a new formation scenario for double bars that involves tidal interactions. We...
  • 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 new VLA/e-MERLIN limit on central images in the gravitational lens system CLASS B1030+074
    We present the new Very Large Array 22 GHz and extended Multi-Element Remote-Linked Interferometer Network 5 GHz observations of CLASS B1030+074, a two-image...
  • Publication
    A newly identified galaxy group thanks to tidal streams of intragroup light
    Context. In the accretion-driven growth scenario, part of the intracluster light is formed in the group environment. Aims: We report the serendipitous discovery...
  • Publication
    A novel black hole mass scaling relation based on coronal gas, and its dependence with the accretion disc
    Using bona-fide black hole (BH) mass estimates from reverberation mapping and the line ratio [Si VI] 1.963$\rm{\mu m}$/Brγ broad as tracer of the AGN ionizing...
  • Publication
    A nuclear grand-design spiral within the normal disc spiral of NGC 5248
    We report the discovery of trailing grand-design nuclear spiral structure in the spiral galaxy NGC 5248. Two tightly wound red spiral arms, with widths less...
  • Publication
    A numerical study of interactions and stellar bars
    For several decades, it has been known that stellar bars in disc galaxies can be triggered by interactions, or by internal processes such as dynamical...
  • Publication
    A peculiar galaxy appears at redshift 11: properties of a moderate-redshift interloper
    In 2011 Laporte et al. reported a very high redshift galaxy candidate: a lensed J-band dropout (A2667-J1). J1 has a photometric redshift of z= 9.6-12, the...
  • Publication
    A peculiar Of star in the Local Group galaxy IC 1613
    Context. Results from the theory of radiatively driven winds are nowadays incorporated in stellar evolutionary and population synthesis models, and are used in...