Accession Number : AD0757687

Title :   Aperture Synthesis of Interstellar Neutral Hydrogen in Absorption. I. The Perseus Arm Feature of Cassiopeia A,

Corporate Author : OWENS VALLEY RADIO OBSERVATORY PASADENA CALIF

Personal Author(s) : Greisen,Eric W.

Report Date : 1973

Pagination or Media Count : 42

Abstract : The Owens Valley Radio Observatory interferometer was used to carry out a program of aperture synthesis in the interstellar neutral hydrogen absorption line. Maps having resolutions of 0.2 km/s and about 1.3 arc minutes were produced using a novel Fourier inversion method. This paper is devoted to discussions of the observing and analyzing procedures and of the results for the Perseus arm feature in the spectrum of Cassiopeia A. (Author Modified Abstract)

Descriptors :   (*INTERSTELLAR MATTER, HYDROGEN), MAPPING, ABSORPTION SPECTRA, EXTRATERRESTRIAL RADIO WAVES, THESES

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE