Search Results for author: Ali Luo

Found 4 papers, 1 papers with code

Galaxy Image Classification using Hierarchical Data Learning with Weighted Sampling and Label Smoothing

1 code implementation20 Dec 2022 Xiaohua Ma, Xiangru Li, Ali Luo, Jinqu Zhang, Hui Li

With the development of a series of Galaxy sky surveys in recent years, the observations increased rapidly, which makes the research of machine learning methods for galaxy image recognition a hot topic.

Image Classification

Planets Across Space and Time (PAST). I. Characterizing the Memberships of Galactic Components and Stellar Ages: Revisiting the Kinematic Methods and Applying to Planet Host Stars

no code implementations18 Feb 2021 Di-Chang. Chen, Ji Wei Xie, Ji-Lin. Zhou, Subo Dong, Chao Liu, Hai-Feng Wang, Mao-Sheng Xiang, Yang Huang, Ali Luo, Zheng Zheng

The revised kinematic method and AVR as well as the stellar catalog of kinematic properties and ages lay foundation for future studies on exoplanets from two dimensions of space and time in the Galactic context.

Earth and Planetary Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics

High-α-Metal-Rich stars in the LAMOST-MRS survey and its connection with the galactic bulge

no code implementations11 Feb 2021 Haopeng Zhang, Yuqin Chen, Gang Zhao, Jingkun Zhao, Xilong Liang, Haining Li, Yaqian Wu, Ali Luo, Rui Wang

A tentative interpretation of this special group is that its stars were formed in the X-shaped bar/bulge region, close to its corotation radius, where radial migration is the most intense, and brings them to present locations at 9 kpc and beyond.

Astrophysics of Galaxies Solar and Stellar Astrophysics

Linearly Supporting Feature Extraction For Automated Estimation Of Stellar Atmospheric Parameters

no code implementations9 Apr 2015 Xiangru Li, Yu Lu, Georges Comte, Ali Luo, Yongheng Zhao, Yongjun Wang

On real spectra, we extracted 23 features to estimate $T_{eff}$, 62 features for log$~g$, and 68 features for [Fe/H].

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