Astrophysical: Nebulae

  • Talk
    Hot Bubbles in Nebulae around Evolved Stars: probing stellar evolution
    In this talk we will present our most recent numerical and observational results on the formation, evolution, and X-ray emission from hot bubbles in nebulae...
  • Publication
    IRAS 17423-1755: A BQ() star with a variable velocity outflow
    Infrared Astronomy Satellite (IRAS) 17423-1755 has been identified as a BQ() star. Its more remarkable observed features are large radial velocities, huge line...
  • News
    James Webb Telescope reveals the possible origin of the mysterious shapes in the Southern Ring Nebula
    The first data show there were at least two, and possibly three, more unseen stars that crafted the oblong, curvy shapes of the Southern Ring Nebula. In...
  • Publication
    JHK photometry in NGC 6334 IV (Persi+, 2000)
    Sub-arcsecond JHK images of the star formation region NGC 6334 IV covering 14.7arcmin2 have been obtained. These were supplemented by H2 and Brγ images of the...
  • 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
    Near-infrared observations of GGD objects
    The authors present the results of a near-infrared survey of 13 areas containing 16 GGD objects. A total of 12 infrared sources have been detected in five of...
  • Talk
    New Advances in Nebular Spectroscopy of Heavy Elements
    The origins of neutron(n)-capture elements (atomic number Z > 30) have historically been discerned from the interpretation of stellar spectra. However, in the...
  • Publication
    New insights into a familiar friend - CO J = 2-1 mapping of the bipolar outflow source NGC 1333 (HH 7-11)
    The bipolar outflow source NGC 1333 (HH 7-11) was observed in the J = 2-1 transition of (C-12)O, and evidence was found for a strong westerly termination of the...
  • Publication
    On the chemodynamics of Wolf-Rayet ring nebulae - NGC 6888
    Results of a chemodynamical study of the W-R ring nebula NGC 6888 around the WN6 star WR 136 are presented; the observations combine high spatial and spectral...