Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-07-11
ASP Conference Series 2003, Vol. 291, pg. 407
Astronomy and Astrophysics
Astrophysics
Contribution to "Hubble's Science Legacy: Future Optical-Ultraviolet Astronomy from Space"
Scientific paper
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.
Bowen David V.
Tripp Todd M.
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