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The appearance of broad H alpha in BL Lacertae
(1996)
We present optical spectropolarimetry confirming Vermeulen et al.'s recent discovery of a broad Hα emission line in BL Lacertae. This feature, which is present at about the same strength in spectra taken two days apart, ...
Powering the Broad H alpha Line in BL Lacertae
(Astronomical Society of the Pacific, 1996)