Free Access

This article has an erratum: [erratum]

Fig. 8

image

Extinction normalised at 10 μm. The black circles, boxes, and the thick black line are observational data from Mathis (1990), Rieke & Lebofsky (1985), and McClure (2009), respectively. The solid coloured lines are for models with the standard size distributions from Jones et al. (2013), whereas the dashed coloured lines show models with smaller sizes as in Sect. 4.4. a) The models presented here are for silicate grains with a 5 nm thick aromatic-rich carbon mantle and carbonaceous grains without mantle (orange), with a 5 nm (turquoise), 7.5 nm (green), 10 nm (yellow), 20 nm (blue), and 30 nm (pink) thick aromatic-rich carbon mantle. b) The models are for carbonaceous grains with a 10 nm thick aromatic-rich carbon mantle and silicate grains with no mantle (orange), a 5 nm (turquoise), 7.5 nm (green), 10 nm (yellow), and 15 nm (blue) thick aromatic mantle.

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.