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- W3099693780 abstract "We investigate the molecular environment of the Galactic supernova remnant (SNR) Kesteven 78 and perform an XMM-Newton X-ray spectroscopic study for the northeastern edge of the remnant. SNR Kes 78 is found to interact with the molecular clouds (MCs) at a systemic local standard of rest velocity of 81 km s−1. At around this velocity, the SNR appears to contact a long molecular strip in the northeast and a large cloud in the east as revealed in the 13CO line, which may be responsible for the radio brightness peak and the OH maser, respectively. The 12CO-line bright region morphologically matches the eastern bright radio shell in general, and the SNR is consistent in extent with a CO cavity. Broadened 12CO-line profiles discerned in the eastern maser region and the western clumpy molecular arc and the elevated 12CO (J = 2–1)/(J = 1–0) ratios along the SNR boundary may be signatures of shock perturbation in the molecular gas. The SNR–MC association places the SNR at a kinematic distance of 4.8 kpc. The X-rays arising from the northeastern radio shell are emitted by underionized hot (∼1.5 keV), low-density (∼0.1 cm−3) plasma with solar abundance, and the plasma may be of intercloud origin. The age of the remnant is inferred to be about 6 kyr. The size of the molecular cavity in Kes 78 implies an initial mass around 22 M☉ for the progenitor." @default.
- W3099693780 created "2020-11-23" @default.
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- W3099693780 date "2011-11-17" @default.
- W3099693780 modified "2023-10-16" @default.
- W3099693780 title "MOLECULAR ENVIRONMENT AND AN X-RAY SPECTROSCOPY OF SUPERNOVA REMNANT KESTEVEN 78" @default.
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- W3099693780 doi "https://doi.org/10.1088/0004-637x/743/1/4" @default.
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