First detection of high velocity gas observed in absorption towards the Cygnus Loop SNR

Details First detection of high velocity gas observed in absorption towards the Cygnus Loop SNR First detection of high velocity gas observed in absorption towards the Cygnus Loop SNR

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19912610w&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #126.10; Bulletin of the American Astronomical Society, Vol. 33, p.1490

Astronomy and Astrophysics

Astronomy

Scientific paper

We report on the first detection of high velocity interstellar absorption features that can be associated with the expansion of the Cygnus Loop Supernova Remnant. Recent observations of several stars with distances in excess of 700pc in line-of-sight towards this SNR have revealed high-velocity absorption features in the associated interstellar NaI and CaII lines. Although high velocity gas has been previously observed in emission towards this remnant, these new observations pave the way for future UV observations that can reveal the ionization structure, temperature and elemental abundance of this expanding shell of shocked gas.

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