Replies

Well, that first sentence hurt my brain, but I was nonetheless intrigued...

V - combined granulation and oscillation variability
t - typical time scale
G - stellar surface gravity
M - main sequence stars
R - red giants
L - luminous R
h - granulation time scales of minutes to hours
d - granulation time scales of days
w - granulation time scales of weeks

We have demonstrated that Vt is a reliable tracer of G for stars with masses 0.8 to 3 times the mass of the Sun across a wide evolutionary range; specifically, from Mh to Rd including Lw.

We have demonstrated that the typical time scale of the combined granulation and oscillation variability is a reliable tracer of stellar surface gravity for stars with masses 0.8 to 3 times the mass of the Sun across a wide evolutionary range -- from main sequence stars with granulation time scales of minutes to hours to red giants with granulation time scales of days, including luminous red giants with time scales of weeks.