Ongoing Star Formation in the Bl Lacertae Object Pks 2005-489

We present VLT long slit optical spectroscopy of the luminous BL Lacertae object PKS 2005-489. The high signal-to-noise ratio and the good spatial resolution of the data allow us to detect the signatures of ongoing star formation in an extended rotating ring, at ∼ 4 kpc from the nucleus. We find that the ring is almost perpendicular to the radio axis and… CONTINUE READING