Astronomy and Astrophysics – Astrophysics
Scientific paper
1994-09-02
Astronomy and Astrophysics
Astrophysics
(8 pages, Accepted by Ap. J Letters) 9295
Scientific paper
10.1086/187687
We present spectra of QSOs 1343+266 A B, covering Ly-beta to C~IV emission at 2\AA~resolution, and find further evidence that this system is not gravitationally lensed. We see, however, a large number of Ly-alpha and some C~IV absorption features common to both spectra. The frequency of C~IV lines in common indicates that these absorbers have a radius close to the sightline separation, $39~h^{-1}$kpc ($q_o=0.5$), implying a spatial number density of these absorbers the same as current day $L>0.3L_*$ galaxies. Furthermore, the velocity mismatch for C~IV systems indicates absorber masses in the range $10^{11}~M_{\odot} < M < 10^{12}~M_{\odot}$. These results confirm that typical galaxies cause QSO C~IV-line absorption. A complete line-list of metal-lines and the Ly-alpha forest is presented
Bechtold Jill
Crotts Arlin P. S.
Duncan Robert C.
Fang Yihu
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