AAS 205th Meeting, 9-13 January 2005
Session 41 ISM I
Oral, Monday, January 10, 2005, 2:00-3:30pm, Pacific 2/3

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[41.02] Two Years of EUV Observations with the Cosmic Hot Interstellar Plasma Spectrometer (CHIPS)

T. P. Sasseen (UC Santa Barbara), M. Hurwitz (UC Berkeley, Space Sciences Laboratory), CHIPS Team

The first year of CHIPS (Cosmic Hot Interstellar Plasma Spectrometer) high-resolution EUV spectral measurements showed that the expected EUV emission from hot gas in the local bubble, primarily from Fe, is nearly absent. To determine whether this is because of Fe depletion or is owing to the absence of hot gas, we have been observing in the last year in a higher sensitivity mode and report on our latest results. We continue to see only very faint EUV emission and have determined that at least part of the detected emission arises from within the solar system, rather than the local interstellar medium. We present our latest EUV spectra and discuss their implications for answering the question posed above.

The CHIPS team gratefully acknowledges support of NASA.

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.