# TESS Program G04030

Title: Investigating The Mysteries Of Pulsations, Spots, And Flares In Metallic-Line A (Am) Stars

PI: Guzik, Joyce - New Mexico Consortium & Los Alamos National Laboratory

Type: SMALL

Summary: The metallic-line A (Am) stars are main-sequence stars of about two solar masses that show enhancements of Ti and Fe-group elements and underabundances of Ca and Sc. These abundance anomalies indicate atomic diffusion processes operating in the stellar envelope that should deplete helium and turn off pulsations via the helium-ionization kappa mechanism. These stars have shallow envelope convection zones that should not be able to sustain a magnetic dynamo. Nevertheless, many Am stars show pulsations as well as spots and flares. We propose TESS observations to discover pulsators, determine frequencies, and characterize magnetic activity. We also propose asteroseismic modeling of the pulsators to understand the origins of the abundance anomalies, pulsations, and rotational variability.


# Sector 040 targets observed (2 min: 4, 20 s: 1)
157623505,275.2606,13.8168,7.78,G04123;G04030
158178074,274.0378,21.0399,7.17,G04123;G04030
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET
76038913,272.7271,38.9615,7.69,G04123;G04030

# Sector 041 targets observed (2 min: 6, 20 s: 4)
380794470,303.7345,31.2217,8.67,G04123;G04030;20SECONDTARGET
209945493,298.2375,17.815,8.07,G04123;G04030;20SECONDTARGET
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET
21162252,275.9502,53.3008,6.24,G04123;G04030
268380299,298.8002,46.6653,7.32,G04171;G04123;G04030
310922962,172.0479,55.6681,7.53,G04171;G04123;G04030;G04106;20SECONDTARGET

# Sector 042 targets observed (2 min: 9, 20 s: 0)
137837596,335.5904,-18.2772,9.85,G04030
146165482,342.1489,-17.2563,8.13,G04123;G04030;G04106
69750857,336.8,-19.4433,8.36,G04123;G04030;G04103
212982053,9.7901,-3.9927,8.69,G04123;G04030
333557388,11.9115,-4.4976,9.03,G04123;G04030
248946257,20.4519,-1.9971,8.17,G04123;G04030;G04103
97399027,32.4439,13.1759,7.52,G04123;G04030
365425158,48.2266,11.1323,7.66,G04123;G04030
416713269,53.1499,9.3732,5.84,G04030

# Sector 043 targets observed (2 min: 14, 20 s: 0)
248946257,20.4519,-1.9971,8.17,G04123;G04030;G04103
212982053,9.7901,-3.9927,8.69,G04123;G04030
333557388,11.9115,-4.4976,9.03,G04123;G04030
365425158,48.2266,11.1323,7.66,G04123;G04030
97399027,32.4439,13.1759,7.52,G04123;G04030
416713269,53.1499,9.3732,5.84,G04030
245794190,67.2097,13.0475,4.86,G04123;G04236;G04240;G04030;G04106;G04125
245819988,67.6627,15.6917,5.27,G04123;G04236;G04240;G04030;G04106
245911904,69.7887,15.7995,5.0,G04123;G04030;G04125
245936817,70.0142,12.1975,5.56,G04240;G04236;G04030;G04060
436723855,73.959,15.0402,5.87,G04123;G04240;G04236;G04030;G04060
307588225,99.0182,13.694,7.03,G04123;G04030
337085903,92.5262,14.2627,9.01,G04123;G04030
437984134,94.5453,15.952,8.16,G04123;G04030;G04242;G04039

# Sector 044 targets observed (2 min: 12, 20 s: 0)
365425158,48.2266,11.1323,7.66,G04123;G04030
416713269,53.1499,9.3732,5.84,G04030
245794190,67.2097,13.0475,4.86,G04123;G04236;G04240;G04030;G04106;G04125
245819988,67.6627,15.6917,5.27,G04123;G04236;G04240;G04030;G04106
245911904,69.7887,15.7995,5.0,G04123;G04030;G04125
245936817,70.0142,12.1975,5.56,G04240;G04236;G04030;G04060
436723855,73.959,15.0402,5.87,G04123;G04240;G04236;G04030;G04060
307588225,99.0182,13.694,7.03,G04123;G04030
337085903,92.5262,14.2627,9.01,G04123;G04030
437984134,94.5453,15.952,8.16,G04123;G04030;G04242;G04039
155463738,103.6614,13.1773,4.41,G04123;G04030;G04125;G04103
334411408,122.8191,9.8211,6.17,G04123;G04030

# Sector 045 targets observed (2 min: 9, 20 s: 0)
155463738,103.6614,13.1773,4.41,G04123;G04030;G04125;G04103
307588225,99.0182,13.694,7.03,G04123;G04030
337085903,92.5262,14.2627,9.01,G04123;G04030
437984134,94.5453,15.952,8.16,G04123;G04030;G04242;G04039
334411408,122.8191,9.8211,6.17,G04123;G04030
286055622,137.9812,5.4686,6.02,G04030
277799104,155.8641,2.2539,8.39,G04123;G04030
344859175,150.7215,1.4858,8.34,G04123;G04030
38116680,170.1334,-2.8982,8.87,G04123;G04030;G04242

# Sector 046 targets observed (2 min: 7, 20 s: 0)
334411408,122.8191,9.8211,6.17,G04123;G04030
344859175,150.7215,1.4858,8.34,G04123;G04030
286055622,137.9812,5.4686,6.02,G04030
277799104,155.8641,2.2539,8.39,G04123;G04030
38116680,170.1334,-2.8982,8.87,G04123;G04030;G04242
152803777,181.0013,-10.2961,6.3,G04123;G04030
152828580,181.8412,-10.7395,7.89,G04123;G04030;G04103

# Sector 047 targets observed (2 min: 1, 20 s: 1)
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET

# Sector 048 targets observed (2 min: 2, 20 s: 1)
310922962,172.0479,55.6681,7.53,G04171;G04123;G04030;G04106;20SECONDTARGET
21162252,275.9502,53.3008,6.24,G04123;G04030

# Sector 049 targets observed (2 min: 1, 20 s: 0)
393801722,186.863,24.655,8.04,G04123;G04030;G04106

# Sector 050 targets observed (2 min: 3, 20 s: 1)
95526455,202.8246,17.5766,8.11,G04030
357357251,206.645,27.9426,8.06,G04123;G04030
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET

# Sector 051 targets observed (2 min: 3, 20 s: 1)
189768489,222.5139,-0.0057,7.35,G04123;G04030
21162252,275.9502,53.3008,6.24,G04123;G04030
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET

# Sector 052 targets observed (2 min: 5, 20 s: 0)
21862361,257.3873,30.7056,7.9,G04123;G04030;G04106;G04103
21673730,255.7219,31.6902,7.75,G04123;G04030
21162252,275.9502,53.3008,6.24,G04123;G04030
76038913,272.7271,38.9615,7.69,G04123;G04030
388078603,317.8854,70.8252,7.2,G04220;G04123;G04030;G04103

# Sector 053 targets observed (2 min: 4, 20 s: 1)
157623505,275.2606,13.8168,7.78,G04123;G04030
158178074,274.0379,21.0399,7.17,G04123;G04030
21162252,275.9502,53.3008,6.24,G04123;G04030
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET

# Sector 054 targets observed (2 min: 10, 20 s: 3)
208447901,288.4993,7.5172,7.58,G04123;G04030
380794470,303.7345,31.2217,8.67,G04123;G04030;20SECONDTARGET
209909591,298.0395,15.3234,7.5,G04123;G04030
209945493,298.2375,17.815,8.07,G04123;G04030;20SECONDTARGET
425300822,296.9157,15.9077,7.6,G04074;G04123;G04030
88112983,303.7586,13.0879,7.39,G04123;G04030
76038913,272.7271,38.9615,7.69,G04123;G04030
268380299,298.8002,46.6653,7.32,G04171;G04123;G04030
21162252,275.9502,53.3008,6.24,G04123;G04030
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET

# Sector 055 targets observed (2 min: 5, 20 s: 2)
380794470,303.7345,31.2217,8.67,G04123;G04030;20SECONDTARGET
345266245,313.7591,17.2595,7.81,G04123;G04030
268380299,298.8002,46.6653,7.32,G04171;G04123;G04030
267813367,293.2879,59.3962,7.81,G04123;G04030;20SECONDTARGET
21162252,275.9502,53.3008,6.24,G04123;G04030