Reply to Comment on "A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp"

Yang Huang; Qikang Feng; Tigran Khachaturyants; Huawei Zhang; Jifeng Liu; Juntai Shen; Timothy C. Beers; Youjun Lu; Song Wang; Haibo Yuan

arXiv · 2409.02734

Reply to Comment on "A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp"

Yang Huang·Qikang Feng·Tigran Khachaturyants·Huawei Zhang·Jifeng Liu·Juntai Shen·Timothy C. Beers·Youjun Lu·Song Wang·Haibo Yuan

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Abstract

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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Yang Huang, Qikang Feng, Tigran Khachaturyants, Huawei Zhang, Jifeng Liu, Juntai Shen, Timothy C. Beers, Youjun Lu, Song Wang, Haibo Yuan. 2024-09-04. Reply to Comment on "A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp". https://arxiv.org/abs/2409.02734

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