Abstract
Radio galaxies characteristically have strong Lya emission lines. However, a few have Lya equivalent widths that are substantially weaker in relation to other emission lines. One in particular was studied by Dey etal (1995), MG 1019+0535 (z=2.765). We report on our reduction of Infrared Space Observatory (ISO}) data in the 160 micron-band for this galaxy. We also compile information on two other high redshift active galaxies with weak Lya lines, the radio galaxy TXS 0211-122, and the AGN-starburst galaxy F 10214+4724, to provide a small weak-Lya line sample. IRAS plus ISO data show that F 10214+4724 has a temperature 89 +/- 12 K. TXS 0211-122 was not detected in either the submillimeter or microwave. Submillimeter measurements of MG 1019+0535 (Cimatti etal 1998) were suggestive of a dust temperature in the range 35 K ~ 300 kpc.
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