Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009acasn..50..161c&link_type=abstract
Acta Astronomica Sinica, vol. 50, no. 2, p. 161-169
Astronomy and Astrophysics
Astronomy
Ism: Supernova Remnant, Ism: Molecules
Scientific paper
The structure and evolution of a supernova remnant depends largely upon ambient interstellar medium,so the interstellar medium can be the valid probe of investigating the evolution of SNRs. We have observed the 12CO line emission around the SN 1572 with 13.7m millimeter-wave telescope at Qinghai Station of PMO, in order to reveal distribution features of velocity and density in small scale. It is shown that the CO molecular gas with the velocity of -69 ~ -61km s - 1 is correlated with SN 1572, and the gas surrounds the SN 1572 along the edge of radio shell with the morphology of open shell. Enhanced emission of 12CO line extends along the northeastern boundary. The spectrum of shocked gas has more than 5km s-1 half-width of velocity. Comparing X-ray, infrared and optical observation data, it indicates that fast blast wave and ejecta are expanding into a dense gas toward the northeast direction and interacting with this part of molecular gas.
Cai Zhen-Yi
Lu Deng-Rong
Yang Jaek-Jin
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