Frequency Distribution of HII Regions Radii as a Distance Indicator

Details Frequency Distribution of HII Regions Radii as a Distance Indicator Frequency Distribution of HII Regions Radii as a Distance Indicator

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jkas...38....7i&link_type=abstract

Journal of the Korean Astronomical Society, vol. 38, no. 1, pp. 7-12

Astronomy and Astrophysics

Astronomy

1

Galaxies: Spiral Galaxies, Distances, Hii Regions

Scientific paper

The frequency distribution of HII regions radii in our galaxy has been investigated. The correlation between the number of these regions and their radii has been re-determined, and could be represented by an exponential function. The size distribution of the HII regions in 10 spiral galaxies has been derived and combined with that of our galaxy to derive the distances of these galaxies. It has been found that the distances derived are in a good agreement with the published ones. The interstellar extinction in the galaxies has no influence on the distance estimate when using this geometrical method.

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