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M.P. Egan (AFRL/VSBC)
Version 1 of the MSX (Midcourse Space Experiment) Point Source Catalog has recently been released through the Infrared Processing and Analysis Center (IPAC) Infrared Science Archive (IRSA). The catalog, which contains > 300,000 Infrared sources, covers the entire Galactic plane (|b| < 5 deg.) and the areas missed by IRAS for up to six photometric bands. A majority of the sources have good measurements only in the 8.3 micron band (MSX A Band).
In this paper we shall demonstrate the utility of the MSX colors in differentiating objects by type. Additionally, we shall demonstrate the utility of combining the MSX 8.3 micron survey data with near-IR surveys such as 2MASS and DENIS. The combination of J and K band data with MSX A Band allows easy discrimination of carbon stars, O-rich AGB stars, K and M giants, main sequence stars, supergiants, planetary nebulae, HII regions and T Tauri objects. We also demonstrate the utility of combining the MSX survey with ISOCAM mid-IR data.