Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.5804h&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #58.04; Bulletin of the American Astronomical Society, Vol. 33, p.871
Astronomy and Astrophysics
Astronomy
Scientific paper
The Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope has brought a new era in studying the low-redshift Lyman-alpha Forest. The advantages of STIS over previous HST spectrographs include:(1) a high spectral resolution (7 km/s) comparable to Keck/HIRES spectra of the high-redshift Lyman-alpha forest; (2) a high observing efficiency brought about by an imaging detector able to span the full far-UV wavelength range (1150-1700 A, or equivalently, z=0.0-0.4) in a single exposure. The STIS Investigation Definition Team is therefore conducting an observational program to determine the properties of the low-redshift intergalactic medium as manifested by the Lyman-alpha forest. The team has made observations of the quasars: 3C 273, 3C 351, and PKS 0405. We shall present results based on the sightline to 3C 273, the brightest of these sources.
Davé Romeel A.
Heap Sally R.
Jenkins Evan
Tripp Todd
Weymann Ray
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