Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.8810s&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #88.10; Bulletin of the American Astronomical Society, Vol. 34, p.1250
Astronomy and Astrophysics
Astronomy
Scientific paper
A challenging computer based lab for astronomy undergraduate students has been developed to determine the masses of the components of the visual binary system Kruger 60 = HD 239960 = BD+56 2783 using archival astrometric observations. The data consist of separations and position angles from 1898 to 1949 (Lippincott 1953; Van de Kamp 1967) of Kruger 60B relative to Kruger 60A covering a complete orbit. After reviewing Kepler's 3rd or Harmonic Law and Newton's revision, they analyze the data using Microsoft Excel to calculate a best fitting elliptical orbit to the relative orbit of Kruger 60B. The importance of deriving stellar masses from such binaries is emphasized by discussing the significance of mass in the role of stellar evolution. This lab is one in a series being designed to provide astronomy majors practical experience in mathematically modeling astronomical data.This research was supported in part by NASA LaSPACE LURA Grant LSU 3115-30-5199.
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