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Full-Text Articles in Physical Sciences and Mathematics
Discovery Of A Lyα Galaxy Near A Damped Lyα Absorber At Z = 2.3, James D. Lowenthal, Craig J. Hogan, Richard F. Green, Adeline Caulet, Bruce E. Woodgate, Larry Brown, Craig B. Foltz
Discovery Of A Lyα Galaxy Near A Damped Lyα Absorber At Z = 2.3, James D. Lowenthal, Craig J. Hogan, Richard F. Green, Adeline Caulet, Bruce E. Woodgate, Larry Brown, Craig B. Foltz
Astronomy: Faculty Publications
We report the detection of a galaxy associated with the damped Lyα absorbing cloud seen at z = 2.309 toward the QSO PHL 957 (zem = 2.681). The galaxy was discovered in deep Fabry-Perot narrow-band CCD frames and was subsequently imaged spectroscopically. In addition to a strong but narrow Lyα emission line (FLyα = 5.6 × 10-16 ergs s-1 cm-2, FWHM ∼ 700 km s-1) and weaker C IV and He II lines, the object shows continuum at V ∼ 24, with a slope (in Fν) rising slightly toward the red, similar to what is seen in high-redshift radio galaxies; …
Emission From The Z = 2 Damped Lyα Absorber Toward Q1215 + 333, Richard Elston, Jill Bechtold, James Lowenthal, Marcia Rieke
Emission From The Z = 2 Damped Lyα Absorber Toward Q1215 + 333, Richard Elston, Jill Bechtold, James Lowenthal, Marcia Rieke
Astronomy: Faculty Publications
We have detected narrow emission lines at 1.118 μm and 1.456 μm in the spectrum of the z = 2.606 quasar Q1215 + 333, corresponding to [O II] λ3727 and Hβ at z = 1.9984, the redshift of a damped Lyα absorber toward this quasar. The intensity of the Hβ line is 7.6 ± 2 × 10-16 ergs cm-2 s-1, which corresponds to a line luminosity of 5 × 1042 ergs s-1 h-2100 (q0 = 0.5). If we assume that the photoionization producing the emission is due purely to massive star formation with a Salpeter initial mass function, we find …