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arXiv 2409.02734astro-ph.GA
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对“一个由逆行进动的银盘翘曲揭示的略扁暗物质晕”评论的回复

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

AI总结:

本文回复 Dehnen 等人对 Huang 等人银盘翘曲进动测量的质疑,通过分析翘曲扭转和 $R$-$τ$ 相关性的影响并结合 N 体+SPH 模拟,证实“动态图像”方法有效,原结论稳健。

摘要:

在这篇回复中,我们进行了全面的分析,以回应 Dehnen 等人(2024)对我们近期使用“动态图像”方法(Huang 等人 2024)测量银盘翘曲进动所提出的关切。我们仔细考察了忽略银盘翘曲的扭转以及所谓的 $R$-$τ$ 相关性对进动速率估计的影响。结果表明,该影响较小,并未超出系统误差和统计误差的范围。利用 N 体+SPH 模拟数据,我们确认“动态图像”技术在测量年龄小于 170 Myr 的恒星族(类似于经典造父变星)中银盘翘曲的逆行进动方面是有效的。因此,Huang 等人(2024)的总体结论依然稳健。

英文摘要:

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 $R$-$τ$ 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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