The HII Regions of M33. II. A Photometric Catalog of 1272 Newly Identified Emission Regions

Details The HII Regions of M33. II. A Photometric Catalog of 1272 Newly Identified Emission Regions The HII Regions of M33. II. A Photometric Catalog of 1272 Newly Identified Emission Regions

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pasp..111..685h&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 111, Issue 760, pp. 685-690.

Astronomy and Astrophysics

Astronomy

30

Galaxies: Individual (M33), Galaxies: Ism, Ism: H Ii Regions

Scientific paper

We have identified a total of 1272 newly recognized emission regions in M33. Combined with the previously cataloged total of 1066 H II regions and supernova remnants, this brings M33's total to 2338 emission regions. This paper provides photometry of the new objects in Hα, which is combined with data from previous catalogs to produce a global H II region luminosity function (corrected for incompleteness) that reaches a faint luminosity limit of 2x10^34 ergs s^-1 and shows a broad maximum with a peak frequency at luminosities of 6x10^35 ergs s^-1. We also plot the H II region size distribution and comment on unusual morphologies.

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