Long‐Baseline Interferometric Observations of Cepheids
Open Access
- 1 July 2002
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 573 (1) , 330-337
- https://doi.org/10.1086/340558
Abstract
We present observations of the galactic cepheids eta Aql and zeta Gem. Our observations are able to resolve the diameter changes associated with pulsation. This allows us to determine the distance to the Cepheids independent of photometric observations. We determine a distance to eta Aql of 320 +/- 32 pc, and a distance to zeta Gem of 362 +/- 38 pc. These observations allow us to calibrate surface brightness relations for use in extra-galactic distance determination. They also provide a measurement of the mean diameter of these Cepheids, which is useful in constructing structural models of this class of star.Comment: 22 pages, 5 figures. Accepted for publication in ApKeywords
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This publication has 34 references indexed in Scilit:
- Fundamental Parameters of Cepheids. V. Additional Photometry and Radial Velocity Data for Southern CepheidsThe Astrophysical Journal Supplement Series, 2002
- Spectral Irradiance Calibration in the Infrared. X. A Self-Consistent Radiometric All-Sky Network of Absolutely Calibrated Stellar SpectraThe Astronomical Journal, 1999
- The Palomar Testbed InterferometerThe Astrophysical Journal, 1999
- Fringe Visibility Estimators for the Palomar Testbed InterferometerPublications of the Astronomical Society of the Pacific, 1999
- An Interferometric Search for Bright Companions to 51 PegasiThe Astrophysical Journal, 1998
- On the Theoretical Period-Radius Relation of Classical CepheidsThe Astrophysical Journal, 1998
- BVRIJHK Photometry of Cepheid VariablesPublications of the Astronomical Society of the Pacific, 1997
- Line profiles of Cepheid variables: projection factors and metallic line asymmetriesMonthly Notices of the Royal Astronomical Society, 1994
- Blue companions of CepheidsThe Astrophysical Journal, 1985
- Stellar Angular Diameters and Visual Surface Brightness -- I LATE SPECTRAL TYPESMonthly Notices of the Royal Astronomical Society, 1976