Astrophysical: H II regions

  • Publication
    Kinematics of Arp 270: gas flows, nuclear activity and two regimes of star formation
    We have observed the Arp 270 system (NGC 3395 and NGC 3396) in Hα emission using the Galaxy Hα Fabry-Perot spectrometer on the 4.2 m William Herschel Telescope...
  • Publication
    Line intensities of SDSS HII regions (Pilyugin+, 2010)
    Spectra of high-metallicity [12+log(O/H)>~8.2] HII regions, where oxygen auroral lines are measurable in both the O+ and O++ zones, have been extracted from the...
  • Publication
    Local Group Galaxies: Abundances in NGC 3109
    We present preliminary results of VLT spectroscopy follow-up of Planetary Nebulae (PNe) and HII regions in the dwarf Irregular galaxy NGC 3109. In total we have...
  • Publication
    Long slit spectroscopy of the nuclear zone of NGC 253
    A study has been undertaken of the physical conditions of the ionized gas within the starburst region of the galaxy NGC 253, using long slit spectroscopy at...
  • Publication
    Mid-infrared images of W75N (Persi+, 2006)
    Mid-infrared images between 8.7 and 18.7um of W75N were taken during three observing runs on September 2000, November 2001 and September 2003 with the mid...
  • Publication
    Modeling the ionizing spectra of H II regions: individual stars versus stellar ensembles
    Aims: We study how IMF sampling affects the ionizing flux and emission line spectra of low mass stellar clusters. Methods: We performed 2 × 106 Monte Carlo...
  • Publication
    Near and Mid-Infrared Images of the Massive Star-Forming Complex G 9.62+0.19
    A near- and mid-infrared study of the star-formation complex G 9.62+0.19 is presented. dIt includes photometrically calibrated images through wide-band JHK and...
  • Publication
    Near infrared observations of the H II region S 146
    Near infrared observations between 0.7 and 5 microns of the irregular H II region S 146 are reported. A source found near the center of the nebula is identified...
  • Publication
    New 325 MHz observations of H II galaxies - The mechanisms that shape the unusual radio spectra
    The B array of the VLA has observed a sample of seven H II galaxies at 325 and 1489 MHz; the radio continuum spectra thus obtained exhibit a wide variety of...