Astrofísicas: Galaxias irregulares

  • Publicación
    A study on the H II regions of NGC 4449.

    Not Available

  • Publicación
    Asymptotic giant branch stars in NGC 6822: Probes of star formation history

    About 500 asymptotic giant branch (AGB) stars have been resolved and photometrically measured in the Local Group (LG) dwarf irregular galaxy NGC 6822. They draw...

  • Charla
    Bar characterization from S4G imaging: Gaining insight into the secular evolution of disc galaxies

    The ΛCDM model predicts that galaxies originate in dark matter haloes, undergoing in their early age a process of continuous merges with other galaxies that...

  • Publicación
    CCD photometry of resolved dwarf irregular galaxies. I - Sextans A

    CCD UBV photometry of 2279 stars in Sextans A is presented. Differences with the photometric scales of Sandage and Carlson (1985) and Hoessel et al. (1983) are...

  • Publicación
    CCD photometry of resolved dwarf irregular galaxies. II - DDO 187. III - GR 8

    CCD photometry of resolved dwarf irregular galaxies was obtained with the 4-m Cerro Tololo Interamerican Observatory telescope in February 1985. BV data from 77...

  • Publicación
    CEERS Key Paper. III. The Diversity of Galaxy Structure and Morphology at z = 3-9 with JWST

    We present a comprehensive analysis of the evolution of the morphological and structural properties of a large sample of galaxies at z = 3-9 using early James...

  • Publicación
    Disk Galaxies Are Self-similar: The Universality of the H I-to-Halo Mass Ratio for Isolated Disks

    Observed scaling relations in galaxies between baryons and dark matter global properties are key to shed light on the process of galaxy formation and on the...

  • Publicación
    Expectations of the Size Evolution of Massive Galaxies at 3 ≤ z ≤ 6 from the TNG50 Simulation: The CEERS/JWST View

    We present a catalog of about 25,000 images of massive (M ⋆ ≥ 10 9 M ⊙) galaxies at redshifts 3 ≤ z ≤ 6 from the TNG50 cosmological simulation, tailored for...

  • Publicación
    H II regions in Sextans A

    CCD narrow-band H-alpha photometry of the Sextans A Local Group dwarf irregular galaxy is presented. Fourteen H II regions have been recorded. Their...