10.5281/zenodo.4562251
https://zenodo.org/records/4562251
oai:zenodo.org:4562251
Feinstein, Adina
Adina
Feinstein
0000-0002-9464-8101
University of Chicago
Montet, Benjamin
Benjamin
Montet
0000-0001-7516-8308
University of New South Wales
Ansdell, Megan
Megan
Ansdell
0000-0003-4142-9842
NASA HQ
Nord, Brian
Brian
Nord
0000-0001-6706-8972
Fermi National Accelerator Laboratory, Kavli Institute for Cosmological Physics, University of Chicago
Bean, Jacob
Jacob
Bean
0000-0003-4733-6532
University of Chicago
Günther, Maximillian
Maximillian
Günther
0000-0002-3164-9086
Massachusetts Institute of Technology
Gully-Santiago, Michael
Michael
Gully-Santiago
0000-0002-4020-3457
The University of Texas at Austin
Schlieder, Joshua
Joshua
Schlieder
0000-0001-5347-7062
NASA Goddard Space Flight Center
Understanding Flare Statistics of Young Stars with TESS and Machine Learning
Zenodo
2021
young stars
cool stars 20.5
2021-02-25
Poster
10.5281/zenodo.4562250
https://zenodo.org/communities/coolstars20half
Creative Commons Attribution 4.0 International
The evolution of young stellar magnetic fields is not well understood. By studying observable proxies, such as stellar flares and starspots, we can begin to better understand such mechanisms. All-sky photometric time-series missions have allowed for the monitoring of thousands of young stars to understand the evolution of stellar activity. We have developed a convolutional neural network, stella, specifically trained to find flares in TESS short-cadence data. We applied the network to 3200 young stars to evaluate flare rates as a function of age and spectral type. We also measured rotation periods for 1500 of our targets and found that flares of all amplitudes are present across all spot phases, suggesting high spot coverage across the entire surface. Additionally, flare rates and amplitudes decrease for stars older than 50 Myr across all temperatures hotter than 4000 K, while cooler stars show no evolution across 800 Myr. Cooler stars also show higher flare rates and amplitudes across all ages, particularly those that are fully convective.