Abstract
The observations-based catalog of stellar spectral energy distributions (SEDs) has been developing for over 20 years, with some look-back to data from over 40 years ago. This presentation will provide examples of the data taken and show some sources which have been remarkably constant, and some that have exhibited significant variations. The relative uncertainty of the data will be shown to be <5%, and in some cases, <1%. The absolute uncertainty is shown to be less than or about 5%. A rationale for why a smaller catalog of well-characterized sources is more beneficial than a larger, more statistical catalog will be made. An updated list of the sources, now numbering over 100, that are monitored multiple times/year will be provided. This work is supported at The Aerospace Corporation by the Internal Research and Development Program.
The Aerospace Spectral Energy Distribution (ASED) Program - 2018 Update
The observations-based catalog of stellar spectral energy distributions (SEDs) has been developing for over 20 years, with some look-back to data from over 40 years ago. This presentation will provide examples of the data taken and show some sources which have been remarkably constant, and some that have exhibited significant variations. The relative uncertainty of the data will be shown to be <5%, and in some cases, <1%. The absolute uncertainty is shown to be less than or about 5%. A rationale for why a smaller catalog of well-characterized sources is more beneficial than a larger, more statistical catalog will be made. An updated list of the sources, now numbering over 100, that are monitored multiple times/year will be provided. This work is supported at The Aerospace Corporation by the Internal Research and Development Program.