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Home » Literature » Reference Lookup

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TitleA Technique for Determining the Extragalactic Distance Scale
AuthorsChiba, Masashi; Yosh, Yuzuru, II
Bibcode

1995ApJ...442...82C   Search ADS ↗

AbstractWe propose a method of distance determination based on the internal structure and dynamics of disk galaxies. The method relies on the universal luminosity profile of a stellar disk represented by an exponential law. Calibrating nearby galaxies with known distances, it is found that the scale length of the disk is tightly correlated with the specific combination of central surface brightness and rotational velocity at a characteristic radius of 2.15 scale lengths from the center. This suggests that the scale length of the disk may be used as an indicator for extragalactic distance scale. The application of this relation to M51 and M100 allows us to arrive at the distances of about 6 and 14 Mpc, respectively, implying a Hubble constant of H_0_ = 92-94 km s^-1^ Mpc^-1^.
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The NASA/IPAC Extragalactic Database (NED) is funded by the
National Aeronautics and Space Administration under
Award Number 80NSSC21M0037, and operated by the California Institute of Technology.

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