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HST snapshot imaging of BL Lac objects
R. Falomo, C. Megan Urry, Riccardo Scarpa +2
Snapshot images of about 100 BL Lac objects were obtained with WFPC2 on HST. Sources from various samples, in the redshift range 0.05 to 1.2, were observed and 61 resolved (51 with…
ASCA and contemporaneous ground-based observations of the BL Lacertae objects 1749+096 and 2200+420 (BL Lac)
Rita M. Sambruna, G. Ghisellini, Eric Hooper +3
We present ASCA observations of the radio-selected BL Lacertae objects 1749+096 (z=0.32) and 2200+420 (BL Lac, z=0.069) performed in 1995 Sept and Nov, respectively. The ASCA spect…
Ultraviolet Isotropic Emission from the Blazar 3C 279
E. Pian, A. Koratkar, L. Maraschi +7
Archival IUE SWP and HST FOS spectra show the presence of a relatively strong, broad Lyman alpha emission line superposed onto the UV spectral continuum of the blazar 3C 279. As op…