The Cepheid Distance Scale: recent progress in fundamental techniques

Details The Cepheid Distance Scale: recent progress in fundamental techniques The Cepheid Distance Scale: recent progress in fundamental techniques

2009-08-26

arxiv.org/abs/0908.3859v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

An invited review at the Santa Fe, NM, conference -- Stellar Pulsation: Challenges for Theory and Observation; May 31-June 5,

Scientific paper

This review examines progress on the Pop I, fundamental-mode Cepheid distance scale with emphasis on recent developments in geometric and quasi-geometric techniques for Cepheid distance determination. Specifically I examine the surface brightness method, interferometric pulsation method, and trigonometric measurements. The three techniques are found to be in excellent agreement for distance measures in the Galaxy. The velocity p-factor is of crucial importance in the first two of these methods. A comparison of recent determinations of the p-factor for Cepheids demonstrates that observational measures of p and theoretical predictions agree within their uncertainties for Galactic Cepheids.

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