Small-scale structures in HI hole of M33 (Deul+, 1990)

Details Small-scale structures in HI hole of M33 (Deul+, 1990) Small-scale structures in HI hole of M33 (Deul+, 1990)

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat..32290362d&link_type=abstract

VizieR On-line Data Catalog: J/A+A/229/362. Originally published in: 1990A&A...229..362D

Computer Science

Interstellar Medium, H I Data, Morphology

Scientific paper

Recent high-resolution HI observations of M33 reveal a large number of regions that are devoid of emission. We interpret these regions as holes formed by interstellar winds; a catalogue containing 148 of these HI holes has been compiled. Their diameters range from the survey resolution limit (>40pc) to 1kpc. The swept-up mass, estimated from surrounding HI densities, ranges from 103^M&sun; to 107^M&sun;. Energies needed to excavate such holes are between 1049 to 1054erg. Indicative ages, based on derived expansion velocities and diameters, show a cutoff near 7x106^yr. Three statistical analysis techniques are applied to determine positional correlation of the H I holes with H II regions, OB associations, and supernova remnants.
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