E. L. Gibb, T. W. Rettig, D. A. Wasikowski (University of Notre Dame), S. D. Brittain (NOAO), J. R. Haywood (University of Notre Dame), C. Kulesa (University of Arizona)
MWC 1080 is an interesting young B0 star surrounded by an edge-on disk and a close, eclipsing stellar companion with a 3 day period. We have obtained moderate resolution infrared spectra of this object with SPEX at the IRTF (0.8--5 \mum) and high-resolution (RP~25,000) spectra with NIRSPEC on the Keck II. The rich 0.8-2.3 \mum spectrum is filled with emission lines due to hydrogen recombination and several metals such as Ca II, Mg I, Fe I, etc. In addition, high-resolution spectra of the 4-5 \mum region show ro-vibrational lines of cold CO in absorption and no evidence of H3+ absorption along the line of sight. We discuss the results, in particular the implications for the location of the cold CO gas and lack of H3+.
This work was supported by NSF grant AST 02-05881.
Bulletin of the American Astronomical Society, 37 #2
© 2005. The American Astronomical Soceity.