Image Details
Caption: Figure 4.
The Brγ line flux, corrected for extinction and distance, overall declines as stars evolve. Two T Tauri stars are among the highest accretors, demonstrating that Class II YSOs can also have high accretion rates. The red dashed line shows the mean Brγ line flux in log(g) = 0.5 wide bins, with each bin separated by one-half this width, as well as the uncertainty in the mean of each bin. We find an overall trend of decreasing Brγ line flux as the stars age, suggesting that the mass accretion rate does decrease with time on average, but there is a wide range of values at a given age. The color scale bar is extinction (AV).
© 2026. The Author(s). Published by the American Astronomical Society.