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Measuring Rotation Periods in Crowded Star Clusters with TESS: A Proof of Concept with NGC 3532

  • Authors: Matthew S. Stafford, Jason Lee Curtis, Marcel A. Agüeros

Matthew S. Stafford et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 2.

Gaia CMD for NGC 3532 based on the E. L. Hunt & S. Reffert (2023) catalog of 3414 members. The absolute magnitudes were calculated using inverted Gaia DR3 parallaxes; we applied a reddening AV = 0.093 mag (J. D. Cummings & J. S. Kalirai 2018). The red circles are the 276 stars in the E. L. Hunt & S. Reffert (2023) catalog with D. J. Fritzewski et al. (2021a) Prot measurements. The blue circles are the 1358 low-mass, main-sequence cluster members for which we have TESS light curves and that met our selection criteria for making new Prot measurements.

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