# TESS Program G05148

Title: Searching Long Period Subdwarf B Binary Systems Using The Light Time Delay Method

PI: Otani, Tomomi - Embry-Riddle Aeronautical University

Type: SMALL

Summary: Our group with undergraduate students will obtain orbital solutions of subdwarf B (sdB) stars long period binaries using the pulsation timing methods. The most promising formation scenarios involve close binary star evolution with three different channels, 1. Common Envelope (CE) channel, which produces short period (P= 0.1 10 d) sdB binary systems, 2. Roche lobe overflow (RLOF) channel, which results in long period (450 < P < 1400 d) sdB binary systems, and 3. white-dwarf merger channel, which produces single sdB stars. The orbital parameters of binaries of P > 100 d are difficult to measure with conventional methods as well as proving a single sdB stars' existence, so the observational studies of 2, and 3 are incomplete. Pulsation timing methods is suitable for those researches.


# Sector 056 targets observed (2 min: 9, 20 s: 4)
405266556,0.278,11.01,13.73,G05148;G05057
236972980,305.1061,62.9285,14.71,G05148;G05057
424720852,294.6354,56.1624,13.44,G05097;G05148;G05057;20SECONDTARGET
471015194,294.617,58.4043,15.04,G05148;G05057;20SECONDTARGET
353735596,276.2184,57.7899,16.11,G05097;G05148;G05057;20SECONDTARGET
259171045,292.4804,69.7957,14.58,G05148;G05057
424383364,277.263,76.8352,14.68,G05148;G05057
270491267,232.36,70.1983,12.95,G05148;G05057
198386262,257.8351,56.5926,14.55,G05148;G05057;20SECONDTARGET

# Sector 057 targets observed (2 min: 7, 20 s: 4)
236972980,305.1061,62.9285,14.71,G05148;G05057
353735596,276.2184,57.7899,16.11,G05097;G05148;G05057;20SECONDTARGET
424720852,294.6354,56.1624,13.44,G05097;G05148;G05057;20SECONDTARGET
471015194,294.617,58.4043,15.04,G05148;G05057;20SECONDTARGET
259171045,292.4804,69.7957,14.58,G05148;G05057
424383364,277.263,76.8352,14.68,G05148;G05057
198386262,257.8351,56.5926,14.55,G05148;G05057;20SECONDTARGET

# Sector 058 targets observed (2 min: 4, 20 s: 1)
406533735,311.3263,81.085,16.3,G05148
259171045,292.4804,69.7957,14.58,G05148;G05057
424383364,277.263,76.8352,14.68,G05148;G05057
353735596,276.2184,57.7899,16.11,G05097;G05148;G05057;20SECONDTARGET

# Sector 059 targets observed (2 min: 6, 20 s: 2)
461601525,11.0892,85.4417,13.54,G05148;G05057
424383364,277.263,76.8352,14.68,G05148;G05057
406533735,311.3263,81.085,16.3,G05148
259171045,292.4804,69.7957,14.58,G05148;G05057
198386262,257.8351,56.5926,14.55,G05148;G05057;20SECONDTARGET
353735596,276.2184,57.7899,16.11,G05097;G05148;G05057;20SECONDTARGET

# Sector 060 targets observed (2 min: 17, 20 s: 7)
240109525,100.9489,32.0294,13.81,G05148;G05057
68495594,103.3512,33.0595,12.47,G05108;G05148;G05097;G05057;20SECONDTARGET
741122759,103.9097,31.3944,17.21,G05148;G05057
335634293,118.602,65.7021,11.82,G05148;G05057
88484868,105.8823,62.6072,13.37,G05148;G05097;G05057;20SECONDTARGET
88565376,106.7909,60.6472,15.08,G05148;G05097;G05057;20SECONDTARGET
137608661,145.9732,78.5281,12.03,G05148;G05057
142491300,161.7707,75.7397,13.89,G05148;G05057
154510451,186.5712,77.7199,14.34,G05148;G05057;20SECONDTARGET
232521983,192.7037,74.6621,12.1,G05148;G05057
406533735,311.3263,81.085,16.3,G05148
259171045,292.4804,69.7957,14.58,G05148;G05057
424383364,277.263,76.8352,14.68,G05148;G05057
270491267,232.36,70.1983,12.95,G05148;G05057
198386262,257.8351,56.5926,14.55,G05148;G05057;20SECONDTARGET
424720852,294.6354,56.1624,13.44,G05097;G05148;G05057;20SECONDTARGET
471015194,294.617,58.4043,15.04,G05148;G05057;20SECONDTARGET

# Sector 061 targets observed (2 min: 7, 20 s: 3)
405799245,142.2335,6.2764,14.27,G05148;G05057
366353515,125.9168,8.3268,15.03,G05148;G05057
468980287,128.5513,7.2028,14.91,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
33834484,63.8381,-72.8615,14.11,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET

# Sector 062 targets observed (2 min: 7, 20 s: 5)
33318760,150.1742,-11.8597,15.46,G05097;G05148;G05057;20SECONDTARGET
439927344,143.9082,-58.934,15.79,G05148;G05081;20SECONDTARGET
293165262,66.6217,-59.1027,14.51,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET
33834484,63.8381,-72.8615,14.11,G05148;G05057;20SECONDTARGET

# Sector 063 targets observed (2 min: 14, 20 s: 7)
20448010,168.5918,-24.3582,12.87,G05148;G05057
14680532,174.3712,-28.1619,12.8,G05148;G05057
403800675,179.3663,-28.0648,14.92,G05097;G05148;G05057;20SECONDTARGET
98871628,180.2277,-27.4125,14.03,G05148;G05097;G05057;20SECONDTARGET
428670887,179.6691,-20.4975,16.06,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET
396874449,168.4517,-8.0057,13.69,G05148;G05057
439927344,143.9082,-58.934,15.79,G05148;G05081;20SECONDTARGET
220476769,75.5506,-56.6186,15.57,G05148;G05057
293165262,66.6217,-59.1027,14.51,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET
280098635,47.1435,-73.4548,15.97,G05148;G05057
33834484,63.8381,-72.8615,14.11,G05148;G05057;20SECONDTARGET

# Sector 064 targets observed (2 min: 12, 20 s: 8)
273218137,179.0471,-48.6675,13.19,G05148;G05057;20SECONDTARGET
309034257,184.3574,-63.4958,15.91,G05148;G05057
434923593,192.4065,-63.5361,14.09,G05097;G05148;G05057;20SECONDTARGET
294728980,169.806,-70.815,15.04,G05084;G05115;G05148;G05081;G05057;20SECONDTARGET
439927344,143.9082,-58.9341,15.79,G05148;G05081;20SECONDTARGET
220476769,75.5506,-56.6186,15.57,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
220573709,47.46,-64.1757,14.95,G05148;G05097;G05057;20SECONDTARGET
293165262,66.6217,-59.1027,14.51,G05148;G05057
33834484,63.8381,-72.8615,14.11,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET

# Sector 065 targets observed (2 min: 10, 20 s: 5)
309034257,184.3574,-63.4958,15.91,G05148;G05057
434923593,192.4065,-63.5361,14.09,G05097;G05148;G05057;20SECONDTARGET
294728980,169.806,-70.815,15.04,G05084;G05115;G05148;G05081;G05057;20SECONDTARGET
269855226,70.0372,-83.3824,16.24,G05148;G05057
33834484,63.838,-72.8615,14.11,G05148;G05057;20SECONDTARGET
220476769,75.5506,-56.6186,15.57,G05148;G05057
293165262,66.6217,-59.1027,14.51,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET

# Sector 066 targets observed (2 min: 10, 20 s: 3)
265124418,293.9047,-76.804,15.36,G05148;G05057
352315023,300.4683,-71.9573,12.99,G05148;G05057
269855226,70.0372,-83.3824,16.24,G05148;G05057
280098635,47.1435,-73.4548,15.97,G05148;G05057
33834484,63.838,-72.8615,14.11,G05148;G05057;20SECONDTARGET
220476769,75.5506,-56.6186,15.57,G05148;G05057
293165262,66.6217,-59.1027,14.51,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET

# Sector 067 targets observed (2 min: 19, 20 s: 6)
158235404,287.4265,-53.7373,11.29,G05148;G05057
79880315,296.9191,-42.0076,10.21,G05094;G05148;G05057
355058528,303.7698,-40.0957,12.02,G05097;G05148;G05057;20SECONDTARGET
300213669,297.8183,-39.9951,14.48,G05148;G05057
31959467,289.7073,-31.078,13.83,G05148;G05057
265124418,293.9047,-76.804,15.36,G05148;G05057
352315023,300.4683,-71.9573,12.99,G05148;G05057
238815671,328.0503,-63.5449,16.15,G05084;G05115;G05148;G05081;G05057;20SECONDTARGET
278659026,328.422,-70.0757,11.75,G05148;G05057
319602897,291.2243,-59.1726,14.8,G05148;G05057
466199456,302.2747,-60.4289,13.74,G05084;G05115;G05148;G05057;20SECONDTARGET
260795163,347.6483,-68.8252,12.76,G05148;G05057
269855226,70.0372,-83.3824,16.24,G05148;G05057
280098635,47.1435,-73.4548,15.97,G05148;G05057
33834484,63.838,-72.8615,14.11,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET
220476769,75.5506,-56.6186,15.57,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET

# Sector 068 targets observed (2 min: 16, 20 s: 9)
62483415,336.2387,-31.6219,13.91,G05148;G05097;G05057;20SECONDTARGET
63281499,337.2429,-31.0988,15.64,G05084;G05115;G05148;G05097;G05081;G05057;20SECONDTARGET
29840077,316.5369,-25.6604,15.63,G05097;G05148;G05057;20SECONDTARGET
234295068,357.7554,-64.4819,13.5,G05148;G05057
238815671,328.0503,-63.5449,16.15,G05084;G05115;G05148;G05081;G05057;20SECONDTARGET
161402643,345.484,-48.0635,13.1,G05148;G05057
139723188,322.8862,-49.9525,15.45,G05148;G05097;G05057;20SECONDTARGET
260795163,347.6483,-68.8252,12.76,G05148;G05057
280098635,47.1435,-73.4548,15.97,G05148;G05057
33834484,63.838,-72.8615,14.11,G05148;G05057;20SECONDTARGET
220573709,47.46,-64.1757,14.95,G05148;G05097;G05057;20SECONDTARGET
220476769,75.5506,-56.6186,15.57,G05148;G05057
293165262,66.6217,-59.1027,14.51,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET

# Sector 069 targets observed (2 min: 14, 20 s: 6)
169285097,356.0915,-34.4501,11.15,G05148;G05097;G05057;20SECONDTARGET
138707823,0.842,-23.6496,13.48,G05148;G05057
5796540,348.8878,-14.7909,15.96,G05148;G05057
80290366,7.9237,-47.4224,12.59,G05148;G05057
80427831,10.7018,-44.2236,13.84,G05148;G05057
251857373,8.7079,-31.4979,16.42,G05084;G05115;G05148;G05081;G05057;20SECONDTARGET
322009509,3.1793,-45.8544,15.25,G05148;G05057;20SECONDTARGET
280098635,47.1435,-73.4548,15.97,G05148;G05057
220476769,75.5506,-56.6186,15.57,G05148;G05057
293165262,66.6217,-59.1027,14.51,G05148;G05057
309658435,79.0441,-60.9603,14.89,G05148;G05057
309791758,80.1841,-61.4973,14.72,G05148;G05057;20SECONDTARGET
55650407,73.8642,-62.9783,15.03,G05084;G05115;G05097;G05148;G05081;G05057;20SECONDTARGET
33834484,63.838,-72.8615,14.11,G05148;G05057;20SECONDTARGET