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Title:
1.2-2.5 micron spectroscopy, photometry, and polarimetry of SS 433
Authors:
Thompson, R. I.; Rieke, G. H.; Tokunaga, A. T.; Lebofsky, M. J.
Affiliation:
AA(Steward Observatory; Arizona, University, Tucson, Ariz.), AB(Steward Observatory, Tucson, Ariz.), AC(Steward Observatory, Tucson, Ariz.), AD(Steward Observatory, Tucson, Ariz.)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 234, Dec. 1, 1979, p. L135-L138. (ApJL Homepage)
Publication Date:
12/1979
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Infrared Astronomy, Polarimetry, Red Shift, Stellar Spectrophotometry, Variable Stars, X Ray Sources, Electron Density (Concentration), Emission Spectra, Infrared Photometry, Near Infrared Radiation
DOI:
10.1086/183124
Bibliographic Code:
1979ApJ...234L.135T

Abstract

Near-infrared photometry, polarimetry, and spectroscopy have been carried out on the variable emission-line object SS 433. Analysis of the observed rest and shifted infrared spectral lines suggests that the electron densities are constrained to 10 to the 8th to 3 x 10 to the 11th per cu cm and the radii of the emitting regions to 3 x 10 to the 12th to 5 x 10 to the 14th cm. Comparison with the Brackett series of hydrogen indicates that the steep Balmer decrement is due to extinction with 7 mag. The source is less than 0.3% (2 sigma) polarized at 2.2 microns.

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