Free Access

Fig. 7


Cartoon representation of the molecular gas structures in NGC 1614 (left) and an HST image of the same region for comparison (right). A high percentage of the 12CO 10 emission (hatched red) is associated with the dust lane. The gas in the dust lane is in the form of diffuse gas. The 13CO 10 emitting gas is not fully distributed throughout the dust lane (hatched gray). Its emission peak (blue star) is located in the “umbilical cord”, the connection between the molecular gas in the circumnuclear ring, traced by 12CO 21 emission (crosshatch pattern, König et al. 2013), and the dust lane. The diffuse gas is being transported along the dust lane in the form of unbound molecular clouds (GMCs). The interaction with density waves (red arrows) causes the gas in the clouds to become self-gravitating. In the umbilical cord, crowding processes in the merger potential occur and the GMCs form GMAs through collisional coagulation. These larger associations are then transported further onto the circumnuclear ring and star formation may be triggered.

This figure is made of several images, please see below:

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.