Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Hu, Qingshun"'
We hereby reported a new physical binary cluster (ASCC~19 and ASCC~21) near the Orion star-forming complex based on the data in the literature. Analysis of the results shows that it is a primordial binary cluster. It is possible that this binary clus
Externí odkaz:
http://arxiv.org/abs/2408.03552
Publikováno v:
A&A 687, A291 (2024)
The study of their morphological coherence allows us to obtain a better understanding of the morphological evolution of open clusters. We employed the ellipsoid fitting method to delineate the 3D spatial structure of the sample clusters while using t
Externí odkaz:
http://arxiv.org/abs/2405.05771
Autor:
Qin, Ming Feng, Zhang, Yu, Liu, Jinzhong, Song, Fangfang, Hu, Qingshun, Wang, Haozhi, Ma, Shuo, Lv, Guoliang
Publikováno v:
A&A 675, A67 (2023)
Context. In the Gaia era, the precision of astrometric data is unprecedented. High-quality data make it easier to find more cluster aggregates and support further confirmation of these open clusters. Aims. We use Gaia DR3 to redetermine the open clus
Externí odkaz:
http://arxiv.org/abs/2304.00226
Publikováno v:
A&A 672, A12 (2023)
We applied the newly developed rose diagram overlay method to detect the layered structure of 88 nearby open clusters ($\leq$500~pc) on the three projections after the distance correction of their member stars, based on the catalog in literature. The
Externí odkaz:
http://arxiv.org/abs/2302.02750
Publikováno v:
A&A 666, A75 (2022)
Context. Observations indicate that the fraction of potential binary star clusters in the Milky Way is either the same or lower than that of the Magellanic Clouds. The unprecedented precision in the parallax measurements by Gaia has allowed for the d
Externí odkaz:
http://arxiv.org/abs/2208.12935
Autor:
Hu, Qingshun, Zhang, Yu, Esamdin, Ali, Jiang, Dengkai, Qin, Mingfeng, Chang, Ning, Wang, Haozhi
We hereby report a low-speed (about~21~km$\cdot$~s$^{-1}$ with respect to the Sun) intruder member in the Hyades cluster based on the data in the literature. The results show that the star is a non-native member star for the Hyades, with its radial v
Externí odkaz:
http://arxiv.org/abs/2207.13245
Autor:
Wang, Hong, Zhang, Yu, Zeng, Xiangyun, Hu, Qingshun, Liu, Jinzhong, Qin, Mingfeng, Lü, Guoliang
We have investigated the variable stars in the field surrounding NGC 2355 based on the time-series photometric observation data. More than 3000 CCD frames were obtained in the V band spread over 13 nights with the Nanshan One-meter Wide-field Telesco
Externí odkaz:
http://arxiv.org/abs/2206.06569
Publikováno v:
A&A 656, A49 (2021)
Base on Gaia Second Data Release and the combination of nonparametric bivariate density estimation with the least square ellipse fitting, we derive the shape parameters of the sample clusters. By analyzing the dislocation of the sample clusters, the
Externí odkaz:
http://arxiv.org/abs/2109.04678
We analyze the morphological evolution of open clusters and provide shape parameters for 265 open clusters. The results show that the overall shape of sample clusters becomes more elliptical as they grow older, while their core remains circular or sl
Externí odkaz:
http://arxiv.org/abs/2103.02912
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