Spectra for the two lines of sight using the Keck/LRIS data. In the top panel, we show the ratio of the two spectra together with the best-fit quasar and galaxy model in red (see text). For comparison, we show the same model without the 2175 Å bump. In the middle and bottom panels, we show the individual spectra together with their best-fit dust-reddened quasar plus galaxy model in red. The shaded region in the bottom panel indicates the location and strength of the 2175 Å dust bump. The dotted line in the bottom panel shows the quasar-only contribution to the model.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.