# TESS Program G07119

Title: Measuring Fundamental Stellar Parameters Of Low-Metallicity Eclipsing Binaries

PI: Rowan, Dominick - Ohio State University

Type: SMALL

Summary: We propose to combine TESS photometry and ground-based spectroscopy to measure the fundamental parameters of 30 low-metallicity main sequence eclipsing binaries (EBs). Detached EBs are the most effective tool to measure precise masses and radii of stars. Less than half of main sequence binaries with dynamical masses and radii have metallicity estimates, and there are even fewer metal poor targets. We identified 42 metal poor EB candidates by combining the ASAS-SN EB catalog with spectroscopic surveys and Gaia astrometry. We propose to use TESS light curves and ground-based radial velocities to dynamically measure the masses and radii of 30 systems. By doing so we can improve models for metal poor stars and empirical relations between stellar properties.


# Sector 084 targets observed (2 min: 13, 20 s: 0)
267806749,10.9807,35.0947,12.42,G07119
238282623,0.3067,21.9366,12.23,G07119
56230057,355.9513,27.1084,12.84,G07119
242799385,8.9295,23.444,12.9,G07119
24466755,349.1691,53.761,13.23,G07119
431609165,358.089,53.2498,12.83,G07119
83909864,4.0139,61.5976,12.33,G07119
291728538,358.6529,37.6882,11.85,G07119
258950766,9.6948,40.7962,12.39,G07119
324341009,329.8151,48.1458,13.33,G07119
314623613,346.5561,59.2424,12.82,G07119
469425528,307.4026,54.4436,11.94,G07119
230392332,286.3736,62.5543,11.5,G07119

# Sector 085 targets observed (2 min: 11, 20 s: 0)
130155586,37.9115,38.6714,12.97,G07119
139461467,39.1266,41.0554,12.83,G07119
177968437,48.6784,39.7148,12.73,G07119
417841148,27.9058,40.736,13.01,G07119
68097448,44.5014,36.6824,12.63,G07119
83909864,4.0138,61.5976,12.33,G07119
245499774,39.0715,56.7509,12.0,G07119
72088759,27.8155,57.8364,12.49,G07119
314623613,346.5561,59.2424,12.82,G07119
230392332,286.3736,62.5543,11.5,G07119
262970694,271.6437,50.6483,11.41,G07119

# Sector 086 targets observed (2 min: 2, 20 s: 0)
245499774,39.0715,56.7509,12.0,G07119
230392332,286.3736,62.5543,11.5,G07119

# Sector 087 targets observed (2 min: 5, 20 s: 0)
124510045,104.537,-7.0005,12.78,G07119
23811044,108.8685,-1.5584,13.55,G07119
207305934,110.5367,8.7551,13.17,G07119
318487744,111.6509,4.0377,12.79,G07119
294430705,93.2263,13.5679,12.44,G07119