Navegação por Autor "Weaver, Kim A."
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The obscuring starburst of NGC 6221 and implications for the hard x-ray background
Levenson, Nancy A.; Fernandes Junior, Roberto Cid; Weaver, Kim A.; Heckman, Timothy M.; Storchi-Bergmann, Thaisa (2001) [Artigo de periódico]We present NGC 6221 as a case study of "X-ray-loud composite galaxies", which appear similar to starbursts at optical wavelengths and resemble traditional active galactic nuclei in X-rays. The net optical spectrum of NGC ...