The Luminosity Function and Size Distribution of HII Regions in NGC 1365

Details The Luminosity Function and Size Distribution of HII Regions in NGC 1365 The Luminosity Function and Size Distribution of HII Regions in NGC 1365

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ap%26ss.276..429r&link_type=abstract

Astrophysics and Space Science, v. 276, Issue 2/4, p. 429-436 (2001).

Astronomy and Astrophysics

Astrophysics

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Scientific paper

We present the HII region luminosity function and size distribution obtained for the HII regions in NGC 1365. The diameters were corrected for the effects of seeing using a Wiener image restoration procedure. The luminosities and sizes were calculated using the Cepheid distance of 18+/-2 Mpc, to NGC 1365. We find good correlation between the H_α luminosities and other properties, such as absolute magnitudes and sizes of the HII regions within this galaxy. We find that the HII region luminosity function can be fitted by a power law of slope α=-2.29±0.11, which is consistent with what is expected for its Hubble type. Also, the size distribution of the HII regions can be represented by an exponential form.

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