Is TU Her DSCT?

Degen1103 · August 3, 2025, 11:28am

TESS microscope reveals: EA-SD TU Her has not just unusually deep nice primary eclipses, but also fast oscillatons with amplitude about 0.01m and period about 1 hour, which overlaps on the secondary eclipses.

doctor13 · August 7, 2025, 9:07pm

What I might suggest is take the data while the system is out of eclipse and run a Fourier. The frequency content would give you a good idea if it was a low amplitude delta Scuti.

Eric

Degen1103 · August 8, 2025, 1:40pm

OK, I tried to get phase plot beween eclipses.

To my shame, I do not know how to normalize data or remove LC slope between extremums, so phase plot is too broad and amplitude is too small, but period about 1 h is presented.

Spectral analysis gives saw, but ANOVA method clear shows period.