A search for extragalactic supernova remnants. (South Carolina Academy of Sciences Abstracts).We present the of a search for supernova remnants (SNRs) in the galaxy NGC 6946 using longslit optical spectra taken at the Kitt Peak 4-meter telescope. The spectra were taken of a number of locations in the galaxy where SNRs were suspected based on unpublished radio data. The purpose of this study was to optically confirm the existence of these suspected SNRs. The two-dimensional spectra were examined and the noise sources removed using the Image Reduction Analysis Facility (IRAF IRAF Image Reduction and Analysis Facility IRAF Institut de Recherches Agronomiques et Forestieres (Cameroon) IRAF Interactive Data Reduction and Analysis Facility IRAF Information Requirements And Flow ). The Ha and the sulfur lines at 671.7 and 673.1 nanometers were recorded and the ratio of SIX/A was determined. If the ratio exceeded 0.40, the source was considered an SNR; otherwise, it was assumed to be an HII region. This work has been supported by grants to SCSU SCSU St Cloud State University SCSU Southern Connecticut State University (Southern) SCSU South Carolina State University (Orangeburg, South Carolina) SCSU Saint Cloud State University from NASA PAIR, NCC NCC See National Clearing Corporation (NCC). 5-454 and NASA MU-SPIN MU-SPIN Minority University - Space Interdisciplinary Network NCC 5-534. Guy Mentor, James E. Payne Department of Physical Sciences, South Carolina State University |
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