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Percentage <strong>of</strong> AAS Membership by Field<br />

35<br />

30<br />

25<br />

percentage<br />

20<br />

15<br />

1989<br />

1997<br />

2009<br />

10<br />

5<br />

0<br />

Planetary and Solar System<br />

Solar<br />

Stellar<br />

ISM + Galaxy<br />

Galaxies + Cluster<br />

Active Galactic Nuclei<br />

Star and Planet Formation<br />

Instrumentation<br />

Cosmology<br />

Fundamental Experimental<br />

discipline<br />

Percent <strong>of</strong> AAS Membership by Discipline<br />

percent<br />

50<br />

45<br />

40<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

Observational Radio<br />

Observational IR<br />

Observational Optical<br />

Observational UV<br />

Observational High Energy<br />

Experimental Particles<br />

Laboratory <strong>Astrophysics</strong><br />

<strong>The</strong>ory<br />

Administration<br />

Amateur or Historian<br />

Aeronomy<br />

Education and Public Outreach*<br />

discipline<br />

* Education and Public Outreach data in 1989 and 1997 was not available<br />

1989<br />

1997<br />

2009<br />

FIGURE 4‐8. Employment <strong>of</strong> astronomers for 1989, 1997, and 2009,by field (top) and discipline<br />

(bottom), designated by percent <strong>of</strong> AAS membership. Data Source: AAS.<br />

PREPUBLICATION COPY—SUBJECT TO FURTHER EDITORIAL CORRECTION<br />

4-13

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