Copyright 2000, the National Academy Press. Keywords, machine extracted. Top 50 words repeated twice, next 100 once, plus phrases. The number of junior members also continued to increaser and this increase is consistent with the continued increase in the number of degree recipients and graduate enrollments shown in Figure 4.1. In 1998 there were approximately 1,600 members of the APS Division of Astrophysics, of which approximately 9 percent were at foreign acIdresses.
Astronomy remains arguably the most vibrant of the physical sciences in the United States.
1997, before anti after the 1991 Decadal Survey. In both cases, random samples of 600 to 700 full, U.S. members were drawn from the .AAS rolls. Individuals were classified by discipline, field, and place of employment. The full lists of classification categories are given in Table A. 1 in Appendix A. These same categorizations were used for the classification of publications anti funding sources discussed below in Section 4.2. The committee is aware that many individuals fall into more than one of the categorizations and that because only about 20 percent of the U.S. full AAS membership was sampled, the accuracy of the estimates for distribution by discipline and field is necessarily limited.