Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Li, Zhao Yu"'
Autor:
Zhang, Hanyuan, Belokurov, Vasily, Evans, N. Wyn, Li, Zhao-Yu, Sanders, Jason L., Ardern-Arentsen, Anke
We present a novel method to constrain the formation time of the Milky Way disc using the chrono-kinematic signatures of the inner Galaxy. We construct an O-rich Mira variable sample from the Gaia Long-period Variable catalogue to study the kinematic
Externí odkaz:
http://arxiv.org/abs/2408.16815
Publikováno v:
ApJ 975, 292 (2024)
Decoding the key dynamical processes that shape the Galactic disk structure is crucial for reconstructing the Milky Way's evolution history. The second Gaia data release unveils a novel wave pattern in the $L_Z-\langle V_R\rangle$ space, but its form
Externí odkaz:
http://arxiv.org/abs/2403.14953
Publikováno v:
A&A 686, A100 (2024)
We perform a comprehensive investigation of the PSF smoothing effect on the measurement of concentration-related parameters ($C$, Gini, $M_{20}$) of high redshift galaxies in the HST and JWST surveys. Our sample contains massive galaxies from the CAN
Externí odkaz:
http://arxiv.org/abs/2403.02094
The vertical phase-space spiral (snail) is a direct sign of dis-equilibrium of Milky Way's disc. Nevertheless, the wrapping of the phase snail contains information of the vertical potential. We propose a novel method to measure the vertical potential
Externí odkaz:
http://arxiv.org/abs/2310.10225
We measure optical colors for the bulges of 312 disk galaxies from the Carnegie-Irvine Galaxy Survey and convert their previously available $R$-band structural parameters to stellar mass parameters. We also measure their average stellar mass surface
Externí odkaz:
http://arxiv.org/abs/2208.14112
The Galaxy is found to be in disequilibrium based on recent findings of the North/South (N/S) asymmetry and the phase mixing signatures, such as a phase spiral (snail) structure in the vertical phase space ($z-V_{z}$). We show that the N/S asymmetry
Externí odkaz:
http://arxiv.org/abs/2208.03667
Autor:
Chen, Bin-Hui, Li, Zhao-Yu
Using the high resolution Milky Way-like model from Auriga simulation we study the chemical properties of the Galactic bulge, focusing on the metallicity difference between stars on the near side (in front of the Galactic center) and the far side (be
Externí odkaz:
http://arxiv.org/abs/2206.07226
Publikováno v:
In Scientia Horticulturae 1 December 2024 338
We calculate the ages, orbits and phase-space coordinates for a sample of $\sim$4 million LAMOST and Gaia stars. The ages are crossmatched and compared with values from two other popular age catalogs which derive the ages using different methods. Of
Externí odkaz:
http://arxiv.org/abs/2109.09250
Autor:
Pu, Zi-tian, Wang, Dan-dan, Song, Wei-xing, Wang, Chao, Li, Zhao-yu, Chen, Ying-long, Shimozono, Tori, Yang, Zhao-min, Tian, Yong-qiang, Xie, Zhi-hong
Publikováno v:
In Journal of Hazardous Materials 5 May 2024 469