THE SPECTRAL ENERGY DISTRIBUTION OF STARS ON THE BROADBAND PHOTOMETRY

Abstract

The method used in this work for carrying out the spectral energy distribution of stars from the data of broadband photometric values in the spectral range of 0.36-100 µm is described.For this, we used the results of multicolor photometric observations in the UBVRIJHK system, as well as data from the WISE and IRAS catalogs. Data from different catalogs are transformed into fluxes in the CGS system of units. In an accessible form for the catalogs under consideration, the values of the photometric zero point fluxes are given. This technique was applied for testing standard stars, as well as for stars that have a gas or gas-dust disks: the Herbig Ae/Be stars, Be, α Lyr type, as well as for a pair of stars from the Orion Nebula Ori OB1. It is shown that stars from the Ori1 complex HD 33917 and HD 36629 have significant excesses of radiation in the far-IR range. It is assumed that such an excess of radiation perhaps is formed in the dusty of the remnant circumstellar discs.