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[Abbreviated] We present an analysis of the newly identified $\mu$ TauAssociation (MUTA) of young stars at $\sim$ 150 pc from the Sun that is part ofthe large Cas-Tau structure, coeval and co-moving with the $\alpha$ Perseicluster. We identify more than 500 candidate members using Gaia DR2 data andthe BANYAN $\Sigma$ tool (Gagn\'e et al. 2018) and we determine an age of $62\pm 7$ Myr for its population based on an empirical comparison of itscolor-magnitude diagram sequence with those of other nearby young associations.The MUTA is related to the Theia 160 group of Kounkel & Covey (2019) andcorresponds to the e Tau group of Liu et al. (2020). As part of this analysis,we introduce an iterative method based on spectral templates to perform anaccurate correction of interstellar extinction of Gaia DR2 photometry, neededbecause of its wide photometric bandpasses. We show that the members of theMUTA display an expected increased rate of stellar activity and faster rotationrates compared with older stars, and that literature measurements of thelithium equivalent width of nine G0 to K3-type members are consistent with ourage determination. We show that the present-day mass function of the MUTA isconsistent with other known nearby young associations. We identify WD 0340+103as a hot, massive white dwarf remnant of a B2 member that left its planetarynebula phase only 270,000 years ago, posing an independent age constraint of$60_{-6}^{+8}$ Myr for the MUTA.

The $\mu$ Tau Association: A 60 Myr-Old Coeval Group at 150 pc from the Sun