+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year Selected Navigations: Author > Provencal, J. L. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 2 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order The unusual helium variable AM Canum Venaticorum Author(s): Provencal, J. L.; Winget, D. E.; Nather, R. E.; Robinson, E. L.; Solheim, J.-E.; Clemens, J. C.; Bradley, J. L.; Kleinman, S. J.; Kanaan, A.; Claver, C. F., et al. Abstract: The unusual variable star AM CVn has puzzled astronomers for over 40 years. This object, both a photometric and spectroscopic variable, is believed to contain a pair of hydrogen-deficient white dwarfs of extreme mass ratio, ... NASA Center: NASA (non Center Specific) Publication Year: 1995 Added to NTRS: 2004-11-03 Accession Number: 95A93305; Document ID: 19950061706 Whole earth telescope observations of the DBV white dwarf GD 358 Author(s): Winget, D. E.; Nather, R. E.; Clemens, J. C.; Provencal, J. L.; Kleinman, S. J.; Bradley, P. A.; Claver, C. F.; Dixson, J. S.; Montgomery, M. H.; Hansen, C. J., et al. Abstract: We report on the analysis of 154 hours of early continuous high-speed photometry on the pulsating DB white dwarf (DBV) GD 358, obtained during the Whole Earth Telescope (WET) run of 1990 May. The power spectrum of the light ... NASA Center: Ames Research Center Publication Year: 1994 Added to NTRS: 2004-11-03 Accession Number: 95A60924; Document ID: 19950029325 + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007