Paper:	HII Region Luminosity Functions: Derivation of a New Standard Candle for Extragalactic Distances
Volume:	230, Galaxy Disks and Disk Galaxies
Page:	335
Authors:	Zurita, A.; Cardwell, A.; Beckman, J. E.; Rozas, M.
Abstract:	We propose the use of the break in the HII region luminosity function (LF) as a possible refined powerful standard candle for extragalactic distances. The invariance and high luminosity of the LF break has been proposed in previous studies as a possible secondary standard candle, but it is calibrated here for the first time using the LFs of NGC 925 and M 100, whose Cepheid distances have been determined in the HST Extragalactic Distance Scale Key Project.

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