Far-Ultraviolet & Halpha Spectroscopy of SNR0057-7226 in the SMC HII Region N66

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dc.creatorDanforth, Charles
dc.creatorSankrit, Ravi
dc.creatorBlair, William
dc.creatorHowk, Chris
dc.creatorChu, You-Hua
dc.date2002-12-16
dc.date.accessioned2026-07-07T02:06:54Z
dc.date.available2026-07-07T02:06:54Z
dc.descriptionN66/NGC346 is the largest and brightest HII region in the Small Magellanic Cloud and contains at least one known supernova remnant SNR0057-7226. Optical emission from the remnant is overwhelmed by the bright photoionized emission from the nebula, but the remnant has been detected by way of far ultraviolet absorption lines. Here we present data from the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite showing strong OVI and CIII emission from a position at the edge of SNR0057-7226. We also present high-resolution, long-slit Halpha spectra across N66 showing high- and low-velocity emission corresponding closely to the X-ray boundaries of the supernova remnant. We use these FUV and optical data to determine the physical parameters of the shock and interaction geometry with N66. We find that ionizing photons from the many massive cluster stars nearby likely affect the ionization balance in the post-shock gas, hindering the production of lower-ionization and neutral species. We discuss the importance and inherent difficulty of searching for supernova remnants in or near bright HII regions and suggest that the far ultraviolet provides a viable means to discover and study such remnants.
dc.description15 pages in emulateApJ format. Scheduled for April 1, 2003, ApJ, 586 see http://fuse.pha.jhu.edu/~danforth/n66/
dc.identifierhttps://arxiv.org/abs/astro-ph/0212354
dc.identifierhttp://arxiv.org/abs/astro-ph/0212354
dc.identifierAstrophys.J. 586 (2003) 1179-1190
dc.identifierdoi:10.1086/367959
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5523
dc.subjectAstrophysics
dc.titleFar-Ultraviolet & Halpha Spectroscopy of SNR0057-7226 in the SMC HII Region N66
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