Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.4001s&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #40.01; Bulletin of the American Astronomical Society, Vol. 29, p.1267
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a detailed optical/X-ray comparison of the filaments of the Galactic SNR RCW 86 (also known as G 315.2-2.3 or MSH 14-63). The optical data consist of deep Hα and [S II] emission line images taken with the UM/CTIO Curtis Schmidt telescope, and the X-ray dataset is composed of deep ROSAT PSPC and HRI images of the remnant. Our preliminary analysis of the HRI dataset (using only the two pointings available out of the four scheduled) shows no significant offset between the X-ray emission in the high-resolution HRI images and the sharp Balmer-dominated filaments. The Balmer-dominated filaments do however bound the X-ray filaments along all the sampled regions. The PSPC data show significant spectral variation around the remnant, which we interpret as temperature variations. We present an approximate temperature map based on the ratio of Snowden bands (6+7 over 3+4), and discuss the possible sources of the observed variations. This work was supported in part by NASA grant NAG5-4825 and the Dean B. McLaughlin Fellowship.
Long Knox S.
Smith Christopher R.
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