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Keck Spectroscopy of Giant Arcs in Abell 2390 | B. L. Frye
; T. J. Broadhurst
; H. Spinrad
; A. Bunker
; | Date: |
6 Mar 1998 | Subject: | astro-ph | Abstract: | We present new Keck observations of giant arcs in the cluster Abell 2390. High resolution two-dimensional spectra of two arcs show metal lines at z=4.040 +/- 0.005 with Lyman-alpha emission spatially separated from the stellar continuum. In addition, spectroscopy along the notorious `straight’ arc reveals two unrelated galaxies, at z=0.913 and z=1.033, with absorption lines of MgII and FeII at z=0.913 seen against the more distant object, indicating the presence of a large gaseous halo. | Source: | arXiv, astro-ph/9803066 | Services: | Forum | Review | PDF | Favorites |
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