# TESS Program G06138

Title: Flares And Coronal Mass Ejections In Open Clusters

PI: Roettenbacher, Rachael - University Of Michigan

Type: SMALL

Summary: Coronal mass ejections (CMEs) are among the most energetic events on our Sun, yet stellar detections are challenging. In this study, we plan to find CMEs in two open clusters and use TESS for simultaneous monitoring. We plan to observe M44 with the MDM/OSMOS multi-object spectrograph. A time series of optical spectra could reveal enhancements on the wings of Balmer lines, as seen in previous detections of stellar CMEs. The Hyades cluster will be observed by the LOFAR radio array, where CMEs can be detected as Type II radio bursts for the first time. In both cases, 20-s TESS light curves will provide the precise times of stellar flares, high energy brightenings that are usually accompanied by CMEs on the Sun. The target list consists of 33 cluster members with known flaring activity.


# Sector 070 targets observed (2 min: 22, 20 s: 22)
245786953,66.9003,15.589,6.9,G06200;G06120;G06138;20SECONDTARGET
245792139,67.202,17.2853,7.28,G06200;G06120;G06138;20SECONDTARGET
245792896,67.1663,15.8707,3.21,G06138;20SECONDTARGET
245800048,67.4913,16.6727,8.32,G06120;G06138;20SECONDTARGET
245800181,67.483,16.9138,10.89,G06120;G06138;20SECONDTARGET
245819720,67.6409,16.1938,4.65,G06120;G06138;20SECONDTARGET
245823882,67.7966,16.3957,12.53,G06138;20SECONDTARGET
381457028,66.8201,17.2416,11.05,G06120;G06138;20SECONDTARGET
435927648,65.8552,16.7771,5.38,G06120;G06138;20SECONDTARGET
435928172,65.8028,15.7127,12.98,G06120;G06138;20SECONDTARGET
435937287,65.9298,15.8807,12.31,G06120;G06138;20SECONDTARGET
435938457,66.0248,17.4439,4.67,G06120;G06138;20SECONDTARGET
435938633,66.0935,17.0788,6.52,G06191;G06120;G06138;20SECONDTARGET
435938788,65.9972,16.7214,10.71,G06120;G06138;20SECONDTARGET
456892137,67.2514,16.3462,11.85,G06120;G06138;20SECONDTARGET
59087096,66.201,15.8746,9.88,G06138;20SECONDTARGET
59087638,66.1188,16.886,7.25,G06200;G06120;G06138;20SECONDTARGET
60874420,66.3196,16.3022,13.64,G06120;G06138;20SECONDTARGET
60874953,66.3072,17.268,10.74,G06138;20SECONDTARGET
60876325,66.4062,15.9408,5.97,G06191;G06120;G06138;20SECONDTARGET
60903802,66.6679,16.7467,7.51,G06200;G06120;G06138;20SECONDTARGET
673643402,67.2125,16.2883,14.08,G06138;20SECONDTARGET

# Sector 071 targets observed (2 min: 23, 20 s: 23)
245786953,66.9003,15.589,6.9,G06200;G06120;G06138;20SECONDTARGET
245792139,67.202,17.2853,7.28,G06200;G06120;G06138;20SECONDTARGET
245792896,67.1663,15.8707,3.21,G06138;20SECONDTARGET
245795626,67.3798,16.2446,9.24,G06120;G06138;20SECONDTARGET
245800048,67.4913,16.6727,8.32,G06120;G06138;20SECONDTARGET
245800181,67.483,16.9138,10.89,G06120;G06138;20SECONDTARGET
245819720,67.6409,16.1938,4.65,G06120;G06138;20SECONDTARGET
245823882,67.7966,16.3957,12.53,G06138;20SECONDTARGET
381457028,66.8201,17.2416,11.05,G06120;G06138;20SECONDTARGET
435927648,65.8552,16.7771,5.38,G06120;G06138;20SECONDTARGET
435928172,65.8028,15.7127,12.98,G06120;G06138;20SECONDTARGET
435937287,65.9298,15.8807,12.31,G06120;G06138;20SECONDTARGET
435938457,66.0248,17.4439,4.67,G06120;G06138;20SECONDTARGET
435938633,66.0935,17.0788,6.52,G06191;G06120;G06138;20SECONDTARGET
435938788,65.9972,16.7214,10.71,G06120;G06138;20SECONDTARGET
456892137,67.2514,16.3462,11.85,G06120;G06138;20SECONDTARGET
59087096,66.201,15.8746,9.88,G06138;20SECONDTARGET
59087638,66.1188,16.886,7.25,G06200;G06120;G06138;20SECONDTARGET
60874420,66.3196,16.3022,13.64,G06120;G06138;20SECONDTARGET
60874953,66.3072,17.268,10.74,G06138;20SECONDTARGET
60876325,66.4062,15.9408,5.97,G06191;G06120;G06138;20SECONDTARGET
60903802,66.6679,16.7467,7.51,G06200;G06120;G06138;20SECONDTARGET
673643402,67.2125,16.2883,14.08,G06138;20SECONDTARGET

# Sector 072 targets observed (2 min: 10, 20 s: 10)
175194919,129.6232,19.8624,12.76,G06138;20SECONDTARGET
175194928,129.7124,19.8505,14.86,G06120;G06138;20SECONDTARGET
175233949,129.8126,19.7254,14.78,G06138;20SECONDTARGET
175233993,129.7908,19.7829,13.76,G06120;G06138;20SECONDTARGET
175234031,129.8408,19.8611,11.71,G06120;G06138;20SECONDTARGET
175234189,129.8103,20.0219,13.98,G06120;G06138;G06134;20SECONDTARGET
175239582,129.9207,19.9913,13.58,G06120;G06138;20SECONDTARGET
175239757,129.8943,19.8,15.4,G06138;20SECONDTARGET
175239768,129.8723,19.7865,11.67,G06120;G06138;20SECONDTARGET
307733505,129.6153,19.7654,14.07,G06138;20SECONDTARGET