Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-09-27
HST and the High Redshift Universe, N.R. Tanvir, A. Arag\'un-Salamanca and J.V. Wall (eds.) World Scientific (1997) 91-94
Astronomy and Astrophysics
Astrophysics
LaTeX file, 4 pages, 1 gif file substituted for encapsulated gray-scale image (Fig 1); hx37_latex.sty and overcite.sty files i
Scientific paper
We present the results of ground-based and HST imaging studies targeted on z>4.5 quasar fields. High-redshift galaxies identified in deep narrow-band Lyman alpha images of the fields surrounding the quasars BR1202-0725 (z=4.694) and BR2237-0607 (z=4.558) have been confirmed with follow-up spectroscopy using the LRIS spectrograph on the Keck 10m telescope. These high-redshift galaxies are typically only moderately luminous objects and their sub-L* magnitudes imply star formation rates of only a few solar masses per year. For BR1202-0725 tip-tilt imaging in Lyman alpha at the UH 2.2m telescope and deep narrow-band IR imaging in [OII] at CFHT reveals a complex and structured system which may be merging to produce the host galaxy of the quasar. For BR2237-0607 the Lyman-alpha-emitting galaxies show the strong Lyman alpha emission and weak continuum expected for objects before substantial chemical enrichment and consequent dust formation and extinction has occurred. These objects appear to be galaxies in their first outburst of star formation.
Egami Eiichi E.
Hu Esther M.
McMahon Richard G.
No associations
LandOfFree
Galaxies at z>4.5 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Galaxies at z>4.5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxies at z>4.5 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-245404