# TESS Program G011092 Title: Phase Shifts In The Timing Of Pulsating Variables PI: Hintz, Eric - Brigham Young University Type: N/A Summary: We have been monitoring a number of pulsating variables in the instability strip using specially designed filters. For a couple of these objects we have seen a drop in temperature that accompanied a phase jump in the data. These stars are often thought to go through a constant period change, which is attributed to evolutionary effects. However, we have examined one Cepheid and one delta Scuti which show a phase jump. A sequence of phase jumps could mimic a period change. However, at this point we have two known object which show the phase jump. The TESS observing program provides and ideal data set to examine a much larger data set with extensive coverage. We believe we will find a larger sample of phase jumping stars and be able to establish a rate at which they appear. # Sector 001 targets observed (1) 394699148,58.3333,-79.8097,8.57,G011092;G011250 # Sector 004 targets observed (2) 25195864,63.7536,-69.5367,10.39,G011092 30526897,75.0315,-68.45,11.04,G011092 # Sector 005 targets observed (3) 25195864,63.7536,-69.5367,10.39,G011092 319289587,71.895,-79.8072,7.52,G011092;G011060 394699148,58.3333,-79.8097,8.57,G011092;G011250 # Sector 006 targets observed (3) 143168754,89.9225,-30.6649,9.22,G011127;G011092;G011060 25195864,63.7536,-69.5367,10.39,G011092 30526897,75.0315,-68.45,11.04,G011092 # Sector 011 targets observed (1) 342500794,204.6872,-70.1867,8.64,G011092 # Sector 012 targets observed (3) 407012535,231.1349,-80.4407,7.69,G011092 342500794,204.6872,-70.1867,8.64,G011092 394699148,58.3333,-79.8097,8.57,G011092;G011250 # Sector 001 targets observed (1) 394699148,58.3333,-79.8097,8.57,G011092;G011250 # Sector 004 targets observed (2) 25195864,63.7536,-69.5367,10.39,G011092 30526897,75.0315,-68.45,11.04,G011092 # Sector 005 targets observed (3) 25195864,63.7536,-69.5367,10.39,G011092 319289587,71.895,-79.8072,7.52,G011092;G011060 394699148,58.3333,-79.8097,8.57,G011092;G011250 # Sector 006 targets observed (3) 143168754,89.9225,-30.6649,9.22,G011127;G011092;G011060 25195864,63.7536,-69.5367,10.39,G011092 30526897,75.0315,-68.45,11.04,G011092 # Sector 011 targets observed (1) 342500794,204.6872,-70.1867,8.64,G011092 # Sector 012 targets observed (3) 407012535,231.1349,-80.4407,7.69,G011092 342500794,204.6872,-70.1867,8.64,G011092 394699148,58.3333,-79.8097,8.57,G011092;G011250 # Sector 013 targets observed (3) 404239187,307.9478,-73.0718,8.58,G011092 407012535,231.1349,-80.4407,7.69,G011092 394699148,58.3333,-79.8097,8.57,G011092;G011250