Astrophysical: Irregular galaxies

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

    Not Available

  • Publication
    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...

  • Talk
    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...

  • Publication
    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...

  • Publication
    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...

  • Publication
    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...

  • Publication
    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 ⋆ ≥ 109 M ⊙) galaxies at redshifts 3 ≤ z ≤ 6 from the TNG50 cosmological simulation, tailored for...

  • Publication
    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...

  • Publication
    Infrared studies of Seyfert galaxies and of the irregular galaxy M 82

    Middle and far infrared studies of the irregular galaxy M 82 and of Seyfert galaxies are presented. M 82 was observed spectrophotometrically from 8 to 13...