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Keywords

binaries (including multiple): close
circumstellar matter
stars: fundamental parameters
techniques: high angular resolution
techniques: interferometric
techniques: photometric

How to Cite

On Determination of Angular Sizes of Some Relatively Hot Stars by Lunar Occultation Observations and on Suggested Interferometric Investigation of these Stars. (2010). Revista Mexicana De Astrofísica Y Astronomía Serie De Conferencias, 38(1), 127-132. https://astronomia.unam.mx/journals/rmxac/article/view/2010rmxac..38..127t
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Abstract

Interferometric and lunar occultation observations of stars are both the effective techniques which allow us to reach high angular resolution at a level of 1 milliarcsecond and better both in the visual and in the near-IR spectral ranges. Several tens of photoelectric diffraction curves of the lunar occultations of various stars have been recorded with a high time resolution of 1 millisecond at the observatories of the Sternberg Astronomical Institute during about two ten-year periods. Among the stars studied by this method there is a number of relatively hot stars. For some of them the angular sizes determined from analysis of the recorded occultation diffraction curves prove to be different from the expected ones. Possible explanations of such a discrepancy are suggested. A table with information on the stars which could be suspected to have complex structure on the basis of analysis of the lunar occultation observations and other available data is presented. The stellar objects described here could become a subject of interferometric investigation by modern powerful interferometric systems.