Where is the Local Hot Gas?

Details Where is the Local Hot Gas? Where is the Local Hot Gas?

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.4101w&link_type=abstract

American Astronomical Society Meeting 203, #41.01; Bulletin of the American Astronomical Society, Vol. 35, p.1269

Astronomy and Astrophysics

Astronomy

Scientific paper

We present preliminary UV absorption spectra of 2 nearby stars (HD 128345 and HD 127381) recorded with the the HST-STIS instrument. Both stars lie in a similar galactic sight-line through the local interstellar medium, with the former star located within the neutral boundary to the Local Bubble at a distance of 95pc, the latter star being ouside of the local cavity at 175pc.
We find no evidence of highly ionized and hot (T ˜ 100,000K) gas residing within the Local Bubble. However, the high ions of CIV and SiIV are seen in absorption in the spectra of HD 127381, suggesting that they are formed at a conductive interface at the neutral boundary to the local cavity.

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