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Cepheid Diameters from Optical Interferometry: The NPOI Survey

Published online by Cambridge University Press:  12 April 2016

Tyler E. Nordgren ,
M. E. Germain ,
J. J. Sudol ,
R. B. Hindsley ,
J. T. Armstrong  and
Arsen R. Hajian
Tyler E. Nordgren
Affiliation:
U.S. Naval Observatory, Astrometry Dept, NPOI, P.O. Box 1149, Flagstaff A Z 86001-1149, USA
M. E. Germain
Affiliation:
U.S. Naval Observatory, Astrometry Dept, NPOI, P.O. Box 1149, Flagstaff A Z 86001-1149, USA
J. J. Sudol
Affiliation:
U.S. Naval Observatory, Astrometry Dept, NPOI, P.O. Box 1149, Flagstaff A Z 86001-1149, USA
R. B. Hindsley
Affiliation:
Remote Sensing Division, Naval Research Laboratory, Code 7210, Washington DC 20375, USA
J. T. Armstrong
Affiliation:
Remote Sensing Division, Naval Research Laboratory, Code 7210, Washington DC 20375, USA
Arsen R. Hajian
Affiliation:
U.S. Naval Observatory, Astrometry Dept., 3450 Massachusetts Avenue NW, Washington DC 20392, USA

Abstract

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We present linear radii for four Cepheid variable stars, spanning a pulsation period range from 3 to 11 d, measured with the Navy Prototype Optical Interferometer (NPOI). We compare these radii to those found using traditional indirect methods, and to various period–radius relations found in the literature.

Type
Part 3. Cepheids, RR Lyrae Stars, Distance Scales
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 152 - 156
Copyright
Copyright © Astronomical Society of the Pacific 2000

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