Open Clusters in TESS Data

Przemysław Mikołajczyk, Andrzej Pigulski

We present preliminary results of the variability search in the field of the young open cluster NGC 6200 using TESS data. We confirm the variability of five previously known β Cep stars and found several candidates for B-type pulsators in the cluster. For two stars, ALS 3721 and ALS 3728, we report bump-like features in the raising branches of their light curves. We conclude that NGC 6200 is a good candidate for ensemble asteroseismology. While spatial resolution of TESS images limits the possibility of studying variability in dense open clusters, this is still possible for loose open clusters and OB associations.

Proceedings of the Polish Astronomical Society, vol. 10, 183-185 (2020)

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