Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.1811f&link_type=abstract
American Astronomical Society, 200th AAS Meeting, #18.11; Bulletin of the American Astronomical Society, Vol. 34, p.949
Astronomy and Astrophysics
Astrophysics
Scientific paper
We report on evidence for, and characteristics of, galactic-scale outflows. First of all, we present spectra of a sample of ten lensed galaxies at high redshift, 3.7 < z < 5.2, selected by their red colors in the fields of four massive clusters: A1689, A2219, A2390, and AC114. Metal absorption lines are detected and observed to be blueshifted by 300-800 km/s with respect to the centroid of Lyman-alpha emission. Local starburst galaxies show similar behavior, associated with obvious gas outflows. The small lensing-corrected sizes of our galaxies together with their large gas motion suggests that outflows of gas are common at high redshift and associated with galaxy formation. Local starburst galaxies show similar behavior, associated with obvious gas outflows. Secondly, we present preliminary results at low redshift from far-UV spectroscopy of the QSO HS0624+6906 taken with the Space Telescope Imaging Spectrograph (STIS) and the Far Ultraviolet Spectroscopic Explorer (FUSE). Two intervening CIV absorbers have been identified at z=0.0635 and z=0.0737 in these spectra, with equivalent widths varying from 25 - 130 mÅ. Combining these measurements with others at low redshift, we calculate the contribution of CIV clouds to the total baryonic content. BLF is supported by an NSF Astronomy and Astrophysics Postdoctoral Research Fellowship.
Frye Brenda L.
Jenkins Edward B.
Tripp Todd M.
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