1. Some Issues, Some Discoveries?, Something Interesting Milan Roberson
PTF Data Set 4 Analysis
Some Issues, Some Discoveries?, Something Interesting
Milan Roberson

2. Noisier Signals PTFS 1500du, 1.875814 hour period
Exciting, very short period. Later found out to be sdB pulsator.
PTFS 1313ax, hour period
PTFS 1716b, minute period

3. More observations needed to better characterize system (e. g
More observations needed to better characterize system (e.g. rule out double period of )
PTFS 1514cj, hour period

4. Cleaner signals PTFS 1717h, 2.3149 hour period
1717h not likely to be caused by ellipsoidal variations, instead probably reflection binary. Can test by looking for emission lines near peak magnitude.
PTFS 1600k, hour period
PTFS 1621h, hour period
1600k and 1621h have smaller amplitudes of variability, more likely to be ellipsoidal variations caused by tidal forces in a compact system

5. PTFS 1516bk, a close binary
PTFS 1516bk A: 2.88 RB, side closest to B is warmed to 1.04 TA
PTFS 1516bk B: 1 RB, 1.57 TA
Period: hours