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Atlas of Galaxies Useful for Measuring the Cosmological Distance ScaleA critical first step in determining distances to galaxies is to measure some property of primary objects such as stars of specific types, H II regions, and supernovae remnants that are resolved out of the general galactic star content. With the completion of the Mount Wilson/Palomar/Las Campanas survey of bright galaxies in 1985, excellent large-scale photographs of the complete Shapley-Ames sample were on hand. Most of the galaxies useful for distance scale calibration are in this collection. This atlas contains photographs of 322 galaxies including the majority of all Shapley-Ames bright galaxies, plus cluster members in the Virgo Cluster core that might be usefully resolved by the Hubble Space Telescope (HST). Because of crowding and high background-disk surface brightness, the choice of field position is crucial for programs involving resolution of particular galaxies into stars. The purpose of this atlas is to facilitate this choice. Enough information is given herein (coordinates of the galaxy centers and the scale of the photography) to allow optimum placement of the HST wide-field planetary camera format of approximately 150 arc-seconds on a side.
Document ID
19890003142
Acquisition Source
Legacy CDMS
Document Type
Other - Other
Authors
Sandage, Allan
(NASA Headquarters Washington, DC United States)
Bedke, John
(Space Telescope Science Inst. Baltimore, Md., United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1988
Subject Category
Astronomy
Report/Patent Number
LC-88-600056
NASA-SP-496
NAS 1.21:496
Report Number: LC-88-600056
Report Number: NASA-SP-496
Report Number: NAS 1.21:496
Accession Number
89N12513
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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