An astrophysics data program investigation of cluster evolution
Subtitle: semiannual report no. 1 : for the period 1 August 1989 through 31 January 1990
By: Edwin M. Kellogg.
Contributors: Smithsonian Astrophysical Observatory.; Goddard Space Flight Center.
Series: NASA contractor report -- NASA CR-181296.
Publisher: Smithsonian Institution, Astrophysical Observatory
Published: 1990
Place of publication: Cambridge, Mass
Language: eng
Format: Microform
Subjects: Astrophysics.; Galactic clusters.; Gravitational lenses.; Mass distribution.; Surveys.; X rays.
Notes: "NASA grant NAG5-1200."

"June 1990."

"Prepared for NASA Goddard Space Flight Center."

Includes bibliographical references.

Also available via Internet from the NTRS web site. Address as of 3/28/06: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900013194%5F1990013194.pdf; current access is available via PURL.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration,] 1990. 1 microfiche.