Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004padeu..14..101k&link_type=abstract
In: Proceedings of the British-Hungarian N+N Workshop for Young Researchers On Computer processing and use of satellite data in
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
We performed an all-sky survey searching for loop- and arc-like intensity enhancements in the diffuse far-infrared emission using IRAS data. We identified 477 of these objects, analysed their indivual FIR properties and their distribution. Our objects trace out the spiral arm structure of the Galaxy in the neighbourhood of the Sun and their distribution clearly suggests that there is an efficient process that can generate loop-like features at high Galactic latitudes. We derived distances for 80 loops with the help of associated objects. Deviations in the celestial distribution of far-infrared loops clearly indicate, that violent events frequently overwrite the structure of the interstellar matter in the inner Galaxy. We obtained observational estimates of f_{in}=6.8% and f_{out}=4.8% for the hot gas volume filling factor of the immediate inward and outward Galactic neighbourhood of the Solar System.
Kiss Cs
Konyves Vera
Moór Attila
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