1. New ZZ Ceti Star: SDSSJ223726.86-010110.9
1. Location
• Stripe 82 ➔ 22h 24m < αJ2000 < 04h 08m; -1.27o < δJ2000 < 1.27o, ≈ 290deg2
2. Variability
∙ Minimum of 4 distinct-epoch imaging
∙ Distribution of multi-epoch photometric errors is Gaussian
∙ χ2 ≈ 1 for non-variable objects
∙ χ2 ≥ 3 for variable objects
3. Pulsation Properties
Harmonics
Period (s) P
Amplitude (mma) A
Fundamental
740.8
2.1
81.2
2.5
First
368.9
1.3
32.6
Second
245.7
1.4
13.0
One millimodulation amplitude (mma) corresponds to a 0.1% change in intensity.
Michael A. Wolfe, STScI

2. The non-sinusoidal light curve implies that this DAV is useful in studying convection in WDs.
Michael A. Wolfe, STScI