FIGURE 4.10 Papers published in journals on the FFAR list (National Research Council, Federal Funding of Astronomical Research, National Academy Press, Washington, D.C., 2000), by field. Top: Papers in specific fields as a fraction of all papers published. Bottom: Absolute number of papers published. Fields were assigned by Bayesian classification on the basis of title, abstract, and keyword text extracted from the Astrophysical Data System. NOTE: PL, planetary and solar system; SO, solar; IM, interstellar medium and the galaxy; AG, active galactic nuclei; SF, star and planet formation; and IN, instrumentation. The reported fractions are annual averages.