Astrofísicas: Formación de galaxias

  • Publicación
    Galactic archaeology for amateur astronomers: RR Lyrae stars as tracers of the Milky Way formation
    Cosmological models predict that large galaxies like the Milky Way formed from the accretion of smaller stellar systems. The most spectacular of these merger...
  • Publicación
    Galaxy pairs and clusters in a lambda CDM universe: Bridging observation and simulation
    I use computer simulations to examine the evolution of close galaxy pair counts and the formation of galaxy clusters. I show that the evolution of the close...
  • Publicación
    Historical Perspectives on the Concept of Galaxy Size
    A brief narrative on how the effective radius and isophotal diameters were accepted as galaxy size measures is presented. Evidence suggests that these...
  • Noticia
    Imágenes de Hubble y GRANTECAN ayudan a identificar cómo se formaron las primeras galaxias
    Una de las preguntas más interesantes que los astrofísicos han tratado de responder desde hace décadas es cómo y cuándo se formaron las primeras galaxias. En...
  • Publicación
    JWST/NIRCam Narrowband Survey of Paβ Emitters in the Spiderweb Protocluster at z = 2.16
    We report the initial result of our Paβ narrowband imaging on a protocluster with the JWST Near Infrared Camera (NIRCam). As NIRCam enables deep narrowband...
  • Publicación
    Local and Global Gas Metallicity versus Stellar Age Relation in MaNGA Galaxies
    The search for new global scaling relations linking the physical properties of galaxies has a fundamental interest. Furthermore, their recovery from spatially...
  • Publicación
    MIGHTEE-HI: Evolution of HI Scaling Relations of Star-forming Galaxies at z < 0.5
    We present the first measurements of H I galaxy scaling relations from a blind survey at z > 0.15. We perform spectral stacking of 9023 spectra of star-forming...
  • Publicación
    Nature of High Equivalent Width Emitters in the Epoch of Reionization Revealed by JWST Medium-band Imaging
    Extreme emission line galaxies (EELGs) at high redshifts are considered key contributors to cosmic reionization at z > 6 due to their higher ionization...
  • Publicación
    On the Nature of Disks at High Redshift Seen by JWST/CEERS with Contrastive Learning and Cosmological Simulations
    Visual inspections of the first optical rest-frame images from JWST have indicated a surprisingly high fraction of disk galaxies at high redshifts. Here, we...