Spectral energy distribution of late stage stars

TL;DR

This paper provides a catalog of spectral energy distributions for 263 late-stage stars observed by ISO, including bolometric flux estimates and analysis of spectral shapes, with a focus on carbon stars and infrared observations.

Contribution

It introduces a new catalog of spectral energy distributions for late-stage stars, including bolometric flux estimates and analysis of spectral continuum shapes.

Findings

60% of ISO SWS spectra match the continuum shape without recalibration

Catalog includes first brightness estimates in K, L, and M bands for some carbon stars

Infrared observations from MSU observatories expand understanding of late-stage stellar spectra

Abstract

This paper presents a catalog of the energy distribution in the spectra of 263 stars in the wavelength range from 0.4 to 100 {\mu}m, which are at late stages of evolution and have been observed by the ISO space observatory. For each object in the catalog, estimates of the observed bolometric fluxes were derived from smoothed energy distribution curves. The catalog is available at https://infra.sai.msu.ru/sai\_lss\_sed both as a table and in machine-readable format. It is shown that for the specified sample of objects their ISO SWS spectra in the range 2.4-45 {\mu}m only 60% of cases correspond to the general shape of the continuum, and can be used without recalibration. A selection of carbon stars, accessible for the infrared observations from the MSU observatories has been made. For some of them the first brightness estimates in the K, L, and M bands were obtained with the new IR camera of the 2.5-m telescope of CMO.