NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T18:58:50 PDT
Help | Comment | NED Home

For refcode 2002A&A...381L..37T:
Retrieve 34 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2002A&A...381L..37T Evidence for the extragalactic Cepheid distance bias from the kinematical distance scale P. Teerikorpi and G. Paturel Tuorla Observatory, University of Turku, 21500 Piikkio, Finland CRAL-Observatoire de Lyon, 69561 Saint-Genis Laval Cedex, France Received 11 July 2001/Accepted 18 November 2001 Abstract. We present new evidence for the extragalactic Cepheid distance bias. A dependence between the Hubble parameter and the absolute Cepheid magnitude limit for a galaxy may be interpreted as a significant bias in the derived photometric distances: those from Cepheid samples with a bright absolute magnitude limit apparently are underestimated. This may be caused not only by the dispersion of M^bar^ at a fixed Cepheid period, but also by the whole amplitude of variation, together with an upper limit in the period of the observed Cepheids, and other factors. If so, then the value of H_0_ based on methods using Cepheid distances is expected to be often overestimated (i.e. the distances underestimated). We discuss whether the effect could be not real, but rather caused by uncertainties in kinematical distances. Key words: galaxies: general - cosmology
Retrieve 34 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home