Gaia Data Release 2
Free Access

Fig. 2

image

Maximum variogram value as a function of the mean G CCD magnitude for known constant and variable sources from the OGLE survey as observed by Gaia. The grey line shows the detection threshold derived from simulated Gaia-like light curves (see Roelens et al. 2017). The brown line corresponds to the same threshold definition scaled by a factor of 10. Panel a: colour-coded by period POGLE from the OGLE catalogue, and panel b: colour-coded by IQR from Gaia per-CCD G photometry. It appears that with this detection threshold γdet = 10γdet,simu, panel a: majority of constant stars and a significant fraction of longer-period variables are not detected as candidates with short-timescale variability when the variogram is used, and panel b: variable sources that are not detected with the variogram approach are low-amplitude sources.

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.