Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Biwei Jiang"'
Publikováno v:
The Astrophysical Journal Letters, Vol 968, Iss 2, p L26 (2024)
Investigating the extinction law in regions of high dust extinction, such as the Pillars of Creation within the M16 region, is crucial for understanding the densest parts of the interstellar medium (ISM). In this study, we utilize observations from t
Externí odkaz:
https://doaj.org/article/7f5d4baf53dc45cebd0f026b24aa61de
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 1, p L9 (2024)
The Milky Way is widely considered to exhibit features of a rotational bar or quadrupole bar. In either case, the feature of the resonance of the Galactic bar should be present in the properties of the chemistry and kinematics, over a large area of t
Externí odkaz:
https://doaj.org/article/4a5678495e624c81939a953c5e68e741
Photochemical origin of SiC2 in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA
Autor:
Yanan Feng, Xiaohu Li, Tom J. Millar, Ryszard Szczerba, Ke Wang, Donghui Quan, Shengli Qin, Xuan Fang, Juan Tuo, Zhenzhen Miao, Rong Ma, Fengwei Xu, Jingfei Sun, Biwei Jiang, Qiang Chang, Jianchao Yang, Gao-Lei Hou, Fangfang Li, Yong Zhang
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
The fact that whether SiC2 is a parent species, formed in the photosphere or as a by-product of high-temperature dust formation, or a daughter species, formed in chemistry driven by the photodestruction of the parent species in the outer envelope, ha
Externí odkaz:
https://doaj.org/article/5227d150519048538e3647ae1b59de05
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 203 (2024)
We present a catalog of dust clouds at high Galactic latitude based on the Planck 857 GHz dust emission data. Using a clustering hierarchical algorithm, 315 dust clouds at high Galactic latitudes are identified. Additionally, using the optical and ul
Externí odkaz:
https://doaj.org/article/8c758f8cffbb46b38d5b3f605fbc8368
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 138 (2024)
Intrinsic colors (ICs) of stars are essential for studies on both stellar physics and dust reddening. In this work, we developed an XGBoost model to predict ICs with the atmospheric parameters T _eff , ${\rm{log}}\,g$ , and [M/H]. The model was train
Externí odkaz:
https://doaj.org/article/5c02950807d6432391c7953cfb6daf04
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 81 (2024)
The granulation of red supergiants (RSGs) in the Magellanic Clouds is systematically investigated by combining the latest RSG samples and light curves from the Optical Gravitational Lensing Experiment and the All-Sky Automated Survey for Supernovae.
Externí odkaz:
https://doaj.org/article/6d0fad22f61a409687cd14d27e1f3856
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 25 (2024)
The star formation histories (SFHs) of galaxies provide valuable insights into galaxy evolution and stellar physics. Understanding the SFHs enables the study of chemical enrichment of galaxies, star formation triggered by interactions, and the behavi
Externí odkaz:
https://doaj.org/article/3ab8e6e2d59f4299ac23402177a76c07
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 1, p 8 (2024)
A detailed measurement is made of the metallicity distributions, kinematics, and dynamics of the thin and thick disks across a large disk volume (5.0 ≤ R ≤ 15.0 kpc and ∣ Z ∣ ≤ 3.0 kpc) by using the LAMOST–APOGEE red clump stars. The meta
Externí odkaz:
https://doaj.org/article/cd76b99f667349269fc52b8b85c3dbef
Autor:
Ming Yang, Bo Zhang, Biwei Jiang, Jian Gao, Yi Ren, Shu Wang, Man I Lam, Hao Tian, Changqing Luo, Bingqiu Chen, Jing Wen
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 106 (2024)
The precise definition of the lower mass limit of red supergiant stars (RSGs) is an open question in astrophysics and does not attract much attention. Here, we assemble a spectroscopic evolved cool star sample with 6602 targets, including RSGs, asymp
Externí odkaz:
https://doaj.org/article/c40b219df5824a738d0a6de44934a137
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 29 (2024)
The far-infrared (FIR) opacity of dust in dark clouds within the Ophiuchus molecular cloud is investigated through multiwavelength infrared observations from UKIDSS, Spitzer, and Herschel. Employing the infrared color excess technique with both near-
Externí odkaz:
https://doaj.org/article/c2915667cca449329c10146a033ff1d9