Astrophysical: Galaxy interactions

  • Publication
    3D Spectroscopy with GTC-MEGARA of the Triple AGN Candidate in SDSS J102700.40+174900.8

    Triple-active galactic nucleus (AGN) systems are expected to be the result of the hierarchical model of galaxy formation. Since there are very few of them...

  • News
    The evolutionary history of the Milky Way determined in more detail than ever

    Thanks to data from the Gaia mission, of the European Space Agency (ESA), and international team led by researchers from the Instituto de Astrofísica de...

  • Publication
    The Galaxy "Missing Dark Matter" NGC 1052-DF4 is Undergoing Tidal Disruption

    The existence of long-lived galaxies lacking dark matter represents a challenge to our understanding of how galaxies form. Here, we present evidence that...

  • Publication
    The Undiscovered Ultradiffuse Galaxies of the Local Group

    Ultradiffuse galaxies (UDGs) are attractive candidates to probe cosmological models and test theories of galaxy formation at low masses; however, they are...

  • Publication
    Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. I. 2D Optical Spectroscopy

    We use panoramic optical spectroscopy obtained with the Very Large Telescope/MUSE to investigate the nature of five candidate extremely isolated low-mass star...

  • Publication
    Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. II. A New Class of Stellar System

    We discuss five blue stellar systems in the direction of the Virgo cluster, analogous to the enigmatic object SECCO 1 (AGC 226067). These objects were...