Infrared observations of SS433
Abstract
Simultaneous observations of SS433 at IR and visible wavelengths are reported. Three pronounced features are established: (1) an enormous apparent excess of IR over optical flux; (2) an almost flat spectrum for wavelengths greater than 1.2 microns; and (3) a variation of IR and optical flux together on a time scale of several days. The IR excess is attributed to a region of gas that radiates by free-free and free-bound emission processes with a total emission measure of the order of 10 to the 61st per cu cm.
- Publication:
-
Nature
- Pub Date:
- September 1979
- DOI:
- 10.1038/281282a0
- Bibcode:
- 1979Natur.281..282G
- Keywords:
-
- Emission Spectra;
- Infrared Astronomy;
- Stellar Spectra;
- Cosmic Dust;
- H Alpha Line;
- Interstellar Extinction;
- Stellar Envelopes;
- Astronomy;
- EMISSION SPECTRA;
- INFRARED ASTRONOMY;
- STELLAR SPECTRA;
- COSMIC DUST;
- H ALPHA LINE;
- INTERSTELLAR EXTINCTION;
- STELLAR ENVELOPES