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The top documents tagged [low column density]
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3D-PDR: A new three-dimensional radiative transfer and astrochemistry code for treating photodissociation regions
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NGC 3147: a 'true' type 2 Seyfert galaxy without the broad-line region THE X-RAY UNIVERSE 2008- Granada, May 28 th 2008 Stefano Bianchi A. Corral 1, F
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