SIMBAD references

2000AJ....120..752F - Astron. J., 120, 752-762 (2000/August-0)

On the size and luminosity versus velocity dispersion correlations from the giant H II regions in the irregular galaxy NGC 4449.

FUENTES-MASIP O., MUNOZ-TUNON C., CASTANEDA H.O. and TENORIO-TAGLE G.

Abstract (from CDS):

Here we present the size and luminosity versus velocity dispersion empirical correlations for the giant H II regions in the large irregular galaxy NGC 4449. We show that correlations only hold for nebulae with a surface brightness higher than 2x1035 ergs.s–1.pc–2 in Hα and with a supersonic single-line Gaussian profile. The exponents of the fits are consistent with virial mechanisms. A comparison with the results from other studies that have only used first-ranked giant H II regions from a variety of star-forming galaxies is also given.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Individual: NGC Number: NGC 4449 - ISM: H II Regions - Turbulence

CDS comments: T.1 and 2 : objects are [SB79b], h = [H69] NGC 4449.

Simbad objects: 47

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