Kavli Affiliate: Huawei Zhang
| First 5 Authors: Yang Huang, Qikang Feng, Tigran Khachaturyants, Huawei Zhang, Jifeng Liu
| Summary:
In this reply, we present a comprehensive analysis addressing the concerns
raised by Dehnen et al. (2024) regarding our recent measurement of the disk
warp precession using the `motion-picture’ method (Huang et al. 2024). We
carefully examine the impact of ignoring the twist of the disk warp and the
so-called $R$-$tau$ correlation on the estimation of the precession rate. The
results indicate that the effect is minor and does not exceed the systematic
and statistical uncertainties. Using N-body+SPH simulation data, we confirm
that the `motion-picture’ technique is effective in measuring retrograde
precession of disk warp in stellar populations younger than 170 Myr, similar to
classical Cepheids. Therefore, the overall conclusions of Huang et al. (2024)
remain robust.
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