Free Access

Fig. B.3

thumbnail

Map of the source density with a dereddened K band (2   μm) magnitude lower than 13. The linear scale is given as a slider on the right and is expressed in number of sources per arcmin2. The Cyg-OB2 association in the middle is clearly visible (see also Knödlseder 2000). A number of embedded clusters inside Cygnus X North could be the seeds for a newly formed OB association.

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.