this is a discretionary proposal to perform follow-up sws fabry-perot observations of highly-excited h2o absorption lines toward orion-irc2. one of the surprises in the recently-obtained full iso-sws06 scan of orion-irc2 in the program evdishoe.molspecs is the identification of several h2o lines in absorption in the 25-45 mu range. all of these lines originate from levels lying several hundred k above ground. to perform a proper analysis of the physical and chemical properties of the gas in which these lines originate, higher-resolution fabry-perot observations are needed. such observations are currently not planned in any program. the proposed observations also provide an excellent application (possible highlight) of the sws fabry-perot mode.
Instrument
SWS06 , SWS07
Temporal Coverage
1998-02-16T01:14:53Z/1998-02-24T01:04:58Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, van Dishoeck et al., 1999, 'SWS FABRY-PEROT OBSERVATIONS OF HIGHLY-EXCITED H2O ABSORPTION TOWARD ORION IRC2', 1.0, European Space Agency, https://doi.org/10.5270/esa-um1e3cq
