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Angular diameter measurements of stars
141
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0
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1991
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The study presents angular diameters for 12 stars measured with the Mark III Optical Interferometer at 450 and 800 nm. Angular diameters were derived by fitting uniform disk models to visibility data from the Mark III Optical Interferometer, using improved analysis techniques and a wider range of baseline lengths, and including a calibration systematics assessment. The resulting uniform disk diameters have rms residuals of about 1 % at 800 nm and <3 % at 450 nm, showing improved precision over earlier measurements and agreement with previous data and stellar atmosphere models. Published in The Astronomical Journal (June 1991), DOI 10.1086/115843.
view Abstract Citations (173) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Angular Diameter Measurements of Stars Mozurkewich, D. ; Johnston, K. J. ; Simon, Richard S. ; Bowers, P. F. ; Gaume, Ralph ; Hutter, D. J. ; Colavita, M. M. ; Shao, M. ; Pan, X. P. Abstract Angular diameters determined with the Mark III Optical Interferometer are presented for 12 stars at wavelengths of 450 and 800 nm. The uniform disk diameters resulting from fits to the visibility observations have rms residuals of order 1 percent for the 800 nm measurements and less than 3 percent for the 450 nm measurements. The improvement over previous observations with this instrument is due to improved data analysis and the use of a wider range of baseline lengths. An analysis of the calibration systematics for the Mark III Optical Interferometer is included. There is good agreement between these measurements and previously published data. The changes in uniform disk diameter between wavelengths of 450 and 800 nm agree with models of stellar atmospheres. Publication: The Astronomical Journal Pub Date: June 1991 DOI: 10.1086/115843 Bibcode: 1991AJ....101.2207M Keywords: Astrometry; Diameters; Stellar Structure; Interferometry; Limb Darkening; Stellar Atmospheres; Astronomy; STARS: DIAMETERS full text sources ADS | data products SIMBAD (21)