Bower HI Mapping of the Spiral Arms of the Milky Way
نویسنده
چکیده
The 21-cm line refers to the spectral line created by changes in the energy state of hydrogen and occurs at approximately 1420.405 MHz. Because this line appears in the microwave, it can easily penetrate dust and interstellar smoke which plagued optical astronomers for centuries. Because the universe in extensively comprised of neutral hydrogen, observing it at this frequency becomes a superior method in mapping the structure of large scale objects. In this experiment we observed hydrogen along the great plane of the galaxy by recording the observed spectra. This data was corrected to the Local Standard of Rest and comparisons between the extracted properties were made. In result, a region of hydrogen in the galaxy was sufficiently mapped along with an estimation of the associative rotation curve and estimation of the mass distribution up to R0.
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