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Sep 30, 2021

Investigation of bright pulse emission from PSR B0031-07

Pulsars are highly magnetized and rapidly rotating neutron stars, providing us an opportunity to explore physics under extreme conditions. The intensity variation of pulsar emission is erratic on a broad range of timescales from nanoseco...
Sep 08, 2021

Spectroscopic and photometric analysis of the eclipsing binary HIP 7666 with δ Scuti pulsations

We carried out new multi-color photometric and spectroscopic observations with five telescopes (NOWT, XL85cm, SPM84cm, YAO2.4m, NAO2.16m, and SPM2.12m) for eclipsing binary HIP 7666, respectively. The radial velocity curves are presented...
Aug 17, 2021

Investigating Cold Dust Properties of 12 Nearby Dwarf Irregular Galaxies by Hierarchical Bayesian Spectral Energy Distribution Fitting

Recently, the hierarchical Bayesian approach is introduced to fit the MBB model (Kelly et al. 2012; Juvela et al. 2013; Lamperti et al. 2019), which could reduce the degeneracy between T and β greatly, and so improve the SED fitting res...
Aug 16, 2021

A Low-amplitude Double-mode Delta Scuti Star with Amplitude Modulation

The Delta Scuti stars show rich oscillation modes in observations, both of radial and non-radial oscillation are detected. Different modes show different propagation behaviors in the star and reflect different properties of the stellar s...
Jun 16, 2021

The Reconstruction of Dark Energy by the Ridge Regression Approach

Since cosmic acceleration was first discovered in 1998 by Riess et al., physicists have predicted the existence of dark energy to explain the accelerating expansion of the universe. Meanwhile, dark energy theory can be used to explain th...
Jun 02, 2021

Deciphering Star Cluster Evolution by Shape Morphology

Open clusters are an important part of the Milky Way. The morphology of the open clusters is an interesting topic which can be used to better understand their evolution. However, the lack of statistical analysis on the clusters' morpholo...

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