This work was supported in part (CJS & JRB) under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. W-7405-ENG-48. We are grateful to many members of the UKIRT and IRTF staffs for assistance with the observations. In particular we are indebted to Dolores Walther and Colin Aspin for invaluable assistance with the IRCAM data reduction. We are grateful to the Laboratory for Experimental Astrophysics and the Institute of Geophysics & Planetary Physics at LLNL, who supported the operation of the 10 m camera, and to Hughes Aircraft who supplied the mid-IR array used in the camera. Many thanks are due to Drs. Issei Yamamura and Shuji Deguchi, who provided us with their 13 CO images prior to publication, thereby giving us a great deal more confidence that our ideas were reasonable. Thanks are also due to Icko Iben for very valuable discussions, to Jack Fix for helping to make Sect. 5 possible, and to Pierre Cox for great encouragement at an important point in this work. Finally, thanks to Dr. Olsen and the boys in the lab' for introducing us to decaffeinated coffee.
© European Southern Observatory (ESO) 1997
Online publication: March 24, 1998