Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Yangping Luo"'
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 273, Iss 1, p 7 (2024)
We obtain the largest catalog of multimode δ Sct stars in the northern sky to date using the Zwicky Transient Facility (ZTF) Data Release 20. The catalog includes 2254 objects, of which 2181 are new to our study. Among these multimode δ Sct stars,
Externí odkaz:
https://doaj.org/article/bb7351674ed6479aa55a1f74aacb955e
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 1, p 21 (2024)
We conducted an analysis of the abundances of He, C, and N in 210 He-rich hot subdwarfs observed within both the Gaia Data Release 3 (DR3) and LAMOST DR7 data sets. This analysis involved fitting the LAMOST spectra with Tlusty/Synspec non-LTE synthet
Externí odkaz:
https://doaj.org/article/e0389ae01d934799a712c4c4d4f20cd4
Autor:
Zhihong He, Yangping Luo, Kun Wang, Anbing Ren, Liming Peng, Qian Cui, Xiaochen Liu, Qingquan Jiang
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 267, Iss 2, p 34 (2023)
Despite having data for over 10 ^9 stars from Gaia, less than 10 ^4 star clusters and candidates have been discovered. In particular, distant star clusters are rarely identified, due to the challenges posed by heavy extinction and great distance. How
Externí odkaz:
https://doaj.org/article/48073758cd1548259e4115e74a41c6a2
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 264, Iss 1, p 8 (2022)
We report 1656 new star clusters found in the Galactic disk (∣ b ∣ < 20°) beyond 1.2 kpc, using Gaia EDR3 data. Based on an unsupervised machine-learning algorithm, DBSCAN, and following our previous studies, we utilized a unique method to do th
Externí odkaz:
https://doaj.org/article/b4cddc7f6fba436a92d944dab1d97a68
Autor:
Jiangdan Li, Christopher A Onken, Christian Wolf, Péter Németh, Mike Bessell, Zhenwei Li, Xiaobin Zhang, Jiao Li, Luqian Wang, Lifang Li, Yangping Luo, Hailiang Chen, Kaifan Ji, Xuefei Chen, Zhanwen Han
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 515:3370-3382
Binaries consisting of a hot subdwarf star and an accreting white dwarf (WD) are sources of gravitational wave radiation at low frequencies and possible progenitors of type Ia supernovae if the WD mass is large enough. Here, we report the discovery o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15963dc8d6d7ec7813b2a49143d4d44a
https://doi.org/10.1093/mnras/stac1768
https://doi.org/10.1093/mnras/stac1768
Although previous searches for star clusters have been very successful, many clusters are likely still omitted, especially at high Galactic latitude regions. In this work, based on the astrometry of Gaia EDR3, we searched nearby (parallax > 0.8 mas)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e71a159ac9d4204445474e838eab1d49
Autor:
Jie Lin, Chengyuan Wu, Xiaofeng Wang, Péter Németh, Heran Xiong, Tao Wu, Alexei V. Filippenko, Yongzhi Cai, Thomas G. Brink, Shengyu Yan, Xiangyun Zeng, Yangping Luo, Danfeng Xiang, Jujia Zhang, WeiKang Zheng, Yi Yang, Jun Mo, Gaobo Xi, Jicheng Zhang, Abdusamatjan Iskandar, Ali Esamdin, Xiaojun Jiang, Hanna Sai, Zixuan Wei, Liyang Chen, Fangzhou Guo, Zhihao Chen, Wenxiong Li, Weili Lin, Han Lin, Xinghan Zhang
Blue large-amplitude pulsators (BLAPs) represent a new and rare class of hot pulsating stars with unusually large amplitudes and short periods. Up to now, only 24 confirmed BLAPs have been identified from more than one billion monitored stars, includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a527456f4253cd487fc37c01e5918e52
We present the first results from our ongoing project to study extremely low mass (ELM) white dwarfs (WDs) ($M$ $\leq$ 0.3$M_{\sun}$) with the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) spectra. Based on the LAMOST DR8 spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ae3dd611b7f2d6317becfeb91240c05
Based on the Gaia DR2 catalogue of hot subdwarf star candidates, we identified 1587 hot subdwarf stars with spectra in LAMOST DR7. We present atmospheric parameters for these stars by fitting the LAMOST spectra with {\sc Tlusty/Synspec} non-LTE synth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::689daa01fa80bda88ff02e191f665421
http://arxiv.org/abs/2107.09302
http://arxiv.org/abs/2107.09302
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 486:2462-2470
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a951d92b4da7b743218e859fd501d11c
https://doi.org/10.1093/mnras/stz1033
https://doi.org/10.1093/mnras/stz1033