Free Access

Fig. 7

thumbnail

Determination of the r magnitude of the RGB tip. Left panel: de-reddened CMD for the indicated elliptical annulus. The two parallel dashed lines enclose the RGB stars selected to derive the luminosity function. The pair of horizontal segments mark the level of the tip, the vertical segment marks the average color at the tip. Upper right panel: LF of the RGB. The sharp cut-off corresponding to the TRGB is marked by a vertical segment. Lower right panel: Sobel filter response as a function of r magnitude. The peak corresponding to the TRGB is marked by a vertical segment.

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.