Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.0608s&link_type=abstract
American Astronomical Society, AAS Meeting #211, #06.08; Bulletin of the American Astronomical Society, Vol. 39, p.737
Astronomy and Astrophysics
Astronomy
Scientific paper
Project CLEA announces a new laboratory exercise on the analysis of HR Diagrams of Open Clusters. The new software allows students to examine plots of V vs B-V for any of 14 open clusters for which high quality data has been published in the literature. (E.g., NGC 752, Alpha Persei, M45, and M67) The clusters range in distance from about 50 to 2000 pc, and in age from 2 x 106 to 4.5 x 109 years. Students can overlay theoretical isochrones and ZAMS lines to these plots using sliders on an interactive tool to determine the distance, age, and even the metallicity of the cluster. Files of magnitudes and colors can be loaded directly into the plotting program, or students can carry out their own photometry using a simulated optical telescope and photometer or a simulated CCD camera that produces FITS files. A student manual provides information on the software and alternative exercises for in-class use and independent study. This exercise is the first that utilizes CLEA's new Virtual Educational Observatory, VIREO. VIREO is a simulated multi-wavelength observatory including optical, radio, infrared, and x-ray instrumentation very large-all-sky database, and access to catalog resources on the Web. The VIREO software provides an environment under which a wide variety of astronomical exercises can be carried out, from observations of asteroids, to searches for high-redshift quasars using a multi-slit spectrograph. The website of Project CLEA is http://public.gettysburg.edu/~marschal/clea/CLEAhome.html This research was sponsored by the National Science Foundation and Gettysburg College.
Cooper Richard P.
Marschall Laurence A.
Snyder Glenn
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