- Galactic astronomy
Galactic astronomy is the study of our own
Milky Waygalaxy and all its contents. This is in contrast to extragalactic astronomy, which is the study of everything outside our galaxy, including all other galaxies.Galactic astronomy is that branch of astronomy which deals with the study of Milky Way galaxy and all its contents.
Galactic astronomy should not be confused with
galaxy formation and evolution, which is the general study of galaxies, their formation, structure, components, dynamics, interactions, and the range of forms they take.
Milky Waygalaxy, where our solar systembelongs, is in many ways the best studied galaxy, although important parts of it are obscured from view in visible wavelengths by regions of cosmic dust. The development of radio astronomy, infrared astronomyand submillimeter astronomyin the 20th Century allowed the gas and dust of the Milky Way to be mapped for the first time.
A standard set of subcategories is used by astronomical journals to split up the subject of Galactic Astronomy:
# abundances - the study of the location of elements heavier than helium
# bulge - the study of the bulge around the center of the Milky Way
# center - the study of the central region of the Milky Way
# disk - the study of the Milky Way disk (the plane upon which most galactic objects are aligned)
# evolution - the evolution of the Milky Way
# formation - the formation of the Milky Way
# fundamental parameters - the fundamental parameters of the Milky Way (mass, size etc)
# globular clusters -
globular clusterswithin the Milky Way
# halo - the large halo around the Milky Way
# kinematics and dynamics - the motions of stars and clusters
# nucleus - the region around the
black holeat the center of the Milky Way ( Sagittarius A*)
# open clusters and associations -
open clustersand associations of stars
# solar neighbourhood - nearby stars
# stellar content - numbers and types of stars in the Milky Way
# structure - the structure (spiral arms etc)
* [http://aanda.u-strasbg.fr:2002/articles/aas/full/1997/18/ds1364/ds1364.html Mapping the hydrogen gas in the Milky Way]
* [http://www.spaceref.com/news/viewpr.html?pid=3392 Mapping the dust in the centre of the Milky Way]
* [http://www.astrofind.net/ Search for Astronomy]
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