Accession Number : AD0763107

Title :   Investigation of Infrared Stellar Spectra with High-Resolution Instrumentation.

Descriptive Note : Final rept. 1 Apr 70-31 Mar 73,

Corporate Author : SMITHSONIAN ASTROPHYSICAL OBSERVATORY CAMBRIDGE MASS

Personal Author(s) : Mertz,Lawrence

Report Date : APR 1973

Pagination or Media Count : 69

Abstract : Several infrared stellar spectra have been measured with about 0.5/cm resolution in the ranges 4100 to 5100 and 5400 to 6400/cm. The presence of OH absorption lines has been identified on them, and the rotational structure of the CO molecular absorption bands is easily resolved. The high resolution and high accuracy, deriving from Fourier spectrometry, permit distinctions between stellar and telluric absorptions on the basis of Doppler shifts. Many unidentified stellar features are evident in the spectra of long-period variables. The investigation required development of a Fourier spectrometer system and data-processint techniques, the details of which are presented here. (Author)

Descriptors :   (*ASTROPHYSICS, INFRARED SPECTROSCOPY), INTERFEROMETERS, SPECTROMETERS, PERFORMANCE(ENGINEERING), CALIBRATION, INTERSTELLAR MATTER, FREE RADICALS, CARBON MONOXIDE, HYDROGEN COMPOUNDS, OXIDES

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE