The Many-Faceted Light Curves of Young Disk-bearing Stars in Taurus as Seen by K2

Abstract

We present a comprehensive study of the variability properties of young disk-bearing stars in the Taurus star-forming region, paralleling our previous investigation in rho Oph and Upper Sco. A sample of 99 confirmed Taurus association members is placed in the diagnostic Q-M plane of flux asymmetry (M) and quasi-periodicity (Q), which guides our assignment of variability classes. We find a similar proportion of flux-symmetric variables in Taurus, but more bursters and fewer dippers relative to Upper Sco. The regions also differ in that the amplitudes for periodic and quasi-periodic sources are larger in Taurus relative to the more evolved Upper Sco star/disk systems. The relationship between photometric variability patterns at optical wavelengths, which arise in the inner disk and at the stellar surface, are assessed relative to available disk inclination measurements.

32 pages, 25 figures; published in the Astronomical Journal

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Cited by in corpus (15)

• Rotation of Low-Mass Stars in Upper Centaurus Lupus and Lower Centaurus Crux with TESS
• A ZTF Look at Optical Variability of Young Stellar Objects in the North America and Pelican Nebulae Complex
• Mass-accretion, spectral, and photometric properties of T Tauri stars in Taurus based on TESS and LAMOST
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• PENELLOPE VII: Revisiting empirical relations to measure accretion luminosity
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• PENELLOPE V. The magnetospheric structure and the accretion variability of the classical T Tauri star HM Lup
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• Monitoring H$\alpha$ Emission from the Wide-orbit Brown-dwarf Companion FU Tau B
• Young Stellar Object Candidates in IC 417
• The potential of VLTI observations for the study of circumstellar disk variability
• Exploring Young Stellar Variability with Gaia DR3 light curves
• Understanding Accretion Variability Through TESS Observations of Taurus