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Steps Toward a Physical Calibration of UBV Photometry

Published online by Cambridge University Press:  04 August 2017

Roland Buser  and
Robert L. Kurucz
Roland Buser
Affiliation:
Astronomical Institute, University of Basel
Robert L. Kurucz
Affiliation:
Center for Astrophysics, Cambridge

Extract

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The large data base of photoelectric measurements on the Johnson UBV system has been a primary source of information in many fields of astrophysical interest. The availability of UBV data for virtually all types of stars known to make up the stellar populations in galaxies requires a continued effort toward establishing a fully physical calibration of these data in order to propagate effectively our improving knowledge on stellar evolution and stellar atmospheres (i.e., the HR diagram) through the observations relevant to the structure and evolution of the galaxies. One of the major links in this long chain of scientific progress is provided by the synthesis of stellar photometric properties from theoretical model atmospheres. This paper will briefly address some of the basic problems involved in the synthetic color calculations and discuss the theoretical calibration of UBV photometry as obtained from various grids of model atmospheres covering a large range of stellar types.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 513 - 518
Copyright
Copyright © Reidel 1985 

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