Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.325..531c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 325, Issue 2, pp. 531-544.
Astronomy and Astrophysics
Astronomy
46
Ism: Bubbles, Hii Regions, Ism: Molecules, Planetary Nebulae: General, Ism: Structure, Supernova Remnants
Scientific paper
We report on the comparison of images of a region of the Galactic plane (centred on l=312°) as seen by the Midcourse Space Experiment (MSX) at 8.3μm and by the Molonglo Observatory Synthesis Telescope (MOST) at 843MHz in the radio continuum. We note that the survey from each telescope is without peer and occupies a niche in panoramic coverage with high spatial resolution. Using independent classification of sources in the selected region, a detailed comparison of the two surveys was made. The aim of the project was to seek global characteristics for different types of source, with a view to establishing predictive criteria for identification and hence emission mechanisms. Several strong trends were found. There is a complete absence in this field of any detected MSX counterparts to non-thermal radio sources. Almost every Hii region in the radio image has its MSX counterpart, in the form of a polycyclic aromatic hydrocarbon halo in the neutral zone surrounding the ionized gas. Both surveys show large-scale `braided' filamentary structures, extending over 1°, which appear to be produced by thermal processes. These filaments may be structures in the warm ionized phase of the interstellar medium or extended haloes around Hii regions. The comparisons in this paper were made using both preliminary MSX 8.3-μm results with 46-arcsec resolution and final MSX images with the intrinsic 20-arcsec resolution of the instruments.
Cohen Martin
Green Anne J.
No associations
LandOfFree
Extended Galactic emission at l=312°: a comparison of mid-infrared and radio continuum (843 MHz) images does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Extended Galactic emission at l=312°: a comparison of mid-infrared and radio continuum (843 MHz) images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended Galactic emission at l=312°: a comparison of mid-infrared and radio continuum (843 MHz) images will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-802232