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25 April 2024

» arxiv » astro-ph/0307257

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The Physical Conditions and Metal Enrichment of Low-Redshift Interstellar and Intergalactic Media: The Benefits of High-Resolution Ultraviolet Spectra
Todd M. Tripp ; David V. Bowen ;
Date:	12 Jul 2003
Journal:	ASP Conference Series 2003, Vol. 291, pg. 407
Subject:	astro-ph
Abstract:	To underscore the value of high spectral resolution for the study of low-z QSO absorption lines, we briefly present Space Telescope Imaging Spectrograph echelle data that demonstrate how increased resolution leads to dramatic improvement in line measurements. We show that even R = lambda/Delta lambda = 20,000 is insufficient for some measurements. The higher the resolution the better, but R ~ 50,000 is adequate for many outstanding questions about the IGM and the ISM of galaxies that can be probed using QSO absorption lines.
Source:	arXiv, astro-ph/0307257
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