SIMBAD references

R. J. Rudy, D. K. Lynch, R. W. Russell, K. Crawford, and B. Kaneshiro, Aerospace Corporation; C. E. Woodward, University of Minnesota; M. Sitko, University of Cincinnati and Space Science Institute; and M. Skinner, Boeing LTS, report on spectroscopic observations (range 0.8-13.5 microns) of the nova V5579 Sgr from May 22 UT. Data from 0.8-5.2 microns were obtained using the SPEX instrument at the Infrared Telescope Facility, while measurements from 3-13.5 microns were acquired with the Advanced Electro-Optical Telescope using the Aerospace Corporation's Broadband Array Spectrograph System. The nova has changed dramatically since the early observations from May 9 (IAUC 8948). The dust emission has increased and now dominates the continuum. The equivalent widths of the lines have weakened substantially, and the line profiles now show a pronounced absorption at their centers. The excitation of the emission lines remains low, although the He I line at 1.083 microns is now present. The dust has cooled significantly and now has a temperature of 1080 K.