Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France Germany, The Netherlands and the UK) and with the participation of ISAS and NASA.

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Based on observations collected at the European Southern Observatory, la Silla, Chili.

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Current address: MVA Inc, 5500 Oakbrook Parkway suite 200, Norcross, GA 30093, USA.

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