Measurement of Galaxy Distances
Jeffrey A. Willick (Stanford University)
TL;DR
This paper reviews six key galaxy distance indicators, discussing their roles in velocity surveys and Hubble constant measurements, and addresses biases affecting distance estimations.
Contribution
It provides a comprehensive overview of principal galaxy distance indicators and their application in cosmological measurements, highlighting past, present, and future efforts.
Findings
Comparison of six galaxy distance indicators.
Discussion of biases like Malmquist bias.
Implications for Hubble constant determination.
Abstract
Six of the principal galaxy distance indicators are discussed: Cepheid variables, the Tully-Fisher relation, the Dn-sigma relation, Surface Brightness Fluctuations, Brightest Cluster Galaxies, and Type Ia Supernovae. The role they play in peculiar velocity surveys and Hubble constant determination is emphasized. Past, present, and future efforts at constructing catalogs of redshift-independent distances are described. The chapter concludes with a qualitative overview of Malmquist and related biases.
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Taxonomy
TopicsAstronomical Observations and Instrumentation · Astronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena