Summary of observed radio flux variability (left panel) and fractional radio flux variability (right panel). We omitted sources which were not detected in both our 10 GHz observations and the previous 7.5 GHz observations of Dzib et al. (2013), since there is essentially no constraint on their time variability. For sources detected from at least one of those observations, we present the flux variation by calculating the average of the differences between the measured 10 GHz flux in our VLA observations and the expected 10 GHz flux derived by re-scaling the 7.5 GHz flux from Dzib et al. (2013) to 10 GHz assuming α = − 0.1 and 2.0. Vertical error bars take the measurement errors and the spectral index range [−0.1, 2.0] into consideration. Dashed lines in the left panel show the expected radio fluxes from EUV photoevaporation winds from protoplanetary disks, assuming the EUV flux ΦEUV = 1040 (bottom), 1041 (middle), and 1042 photons s−1 (top).
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.