Accession Number : ADA257133


Title :   Investigation of a Possible Galactic Chimney


Descriptive Note : Final rept. 1991-1992


Corporate Author : NAVAL ACADEMY ANNAPOLIS MD


Personal Author(s) : Roberts, Bonnie R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a257133.pdf


Report Date : 08 May 1992


Pagination or Media Count : 77


Abstract : Since the discovery in 1924 that we live in a separate star system, now known as the Milky Way Galaxy, astronomers have worked to understand the structure, composition and dynamics of our galaxy. A particular puzzle in recent years has been the origin and dynamics of the interstellar gas in the halo region of the galaxy high above the visible flat stellar disk. The chimney model dominates current theories of the source, support and ionization of the halo gas, yet no one has actually seen a galactic chimney. The most likely candidate for a galactic chimney in our galaxy was observed. The National Radio Astronomy Observatory telescope and NASA's International Ultraviolet Explorer satellite were used in these observations. The observations provided the data for the study. The investigation take the approach of observing a single region in great detail at many different wavelengths in order to gain understanding of the composition, ionization, and dynamics of the halo gas in the region of a possible galactic chimney. Interstellar matter; Galaxies; Milky Way.


Descriptors :   *GALAXIES , *RADIO ASTRONOMY , *INTERSTELLAR MATTER , MODELS , DYNAMICS , OBSERVATION , STRUCTURES , IONIZATION , ASTRONOMERS , SCIENTIFIC SATELLITES , DISKS , STARS , OBSERVATORIES , APPROACH


Subject Categories : Astronomy


Distribution Statement : APPROVED FOR PUBLIC RELEASE