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相关论文: The filamentary structures in the CO emission towa…

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We present a study of the filamentary structure in the atomic hydrogen (HI) emission at the 21 cm wavelength toward the Galactic plane using the observations in the HI4PI survey. Using the Hessian matrix method across radial velocity…

We present a study of the filamentary structure in the emission from the neutral atomic hydrogen (HI) at 21 cm across velocity channels in the 40'' and 1.5-km/s resolution position-position-velocity cube resulting from the combination of…

The morphology of molecular clouds is crucial for understanding their origin and evolution. In this work, we investigate the morphology of the filamentary molecular clouds (filaments for short) using a portion of the $^{12}\text{CO}…

星系天体物理 · 物理学 2024-03-26 Wen Ge , Fujun Du , Lixia Yuan

We present a study of the $^{12}$CO(1-0) line emission anisotropy across the Milky Way's disk to examine the effect of stellar feedback and Galactic dynamics on the distribution of the dense interstellar medium. The Hessian matrix method is…

The Milky Way Imaging Scroll Painting (MWISP) project is an unbiased Galactic plane CO survey for mapping regions of l=-10deg to +250deg and |b|<5.2deg with the 13.7 m telescope of the Purple Mountain Observatory. The legacy survey aims to…

星系天体物理 · 物理学 2019-01-08 Yang Su , Ji Yang , Shaobo Zhang , Yan Gong , Hongchi Wang , Xin Zhou , Min Wang , Zhiwei Chen , Yan Sun , Xuepeng Chen , Ye Xu , Zhibo Jiang

We present observations of the CO isotopologues ($^{12}$CO, $^{13}$CO, and C$^{18}$O) toward the Galactic region with $169\arcdeg.75 \leqslant l \leqslant 174\arcdeg.75$ and $-0\arcdeg.75 \leqslant b \leqslant 0\arcdeg.5$, using the Purple…

星系天体物理 · 物理学 2019-08-22 Fang Xiong , Xuepeng Chen , Qizhou Zhang , Ji Yang , Min Fang , Miaomiao Zhang , Weihua Guo , Li Sun

After the morphological classification of the 18,190 $^{12}$CO molecular clouds, we further investigate the properties of their internal molecular gas structures traced by the $^{13}$CO($J=$ 1$-$0) line emissions. Using three different…

星系天体物理 · 物理学 2022-08-17 Lixia Yuan , Ji Yang , Fujun Du , Yang Su , Xunchuan Liu , Shaobo Zhang , Yan Sun , Xin Zhou , Qing-Zeng Yan , Yuehui Ma

Knowledge about the distribution of CO emission in the Milky Way is essential to understand the impact of Galactic environment on the formation and evolution of structures in the interstellar medium. However, currently our insight about the…

星系天体物理 · 物理学 2020-08-19 M. Riener , J. Kainulainen , J. D. Henshaw , H. Beuther

We attempt to visually classify the morphologies of 18190 molecular clouds, which are identified in the $^{12}$CO(1-0) spectral line data over $\sim$ 450 deg$^{2}$ of the second Galactic quadrant from the Milky Way Imaging Scroll Painting…

星系天体物理 · 物理学 2021-12-08 Lixia Yuan , Ji Yang , Fujun Du , Xunchuan Liu , Shaobo Zhang , Zehao Lin , Jingfei Sun , Qing-Zeng Yan , Yuehui Ma , Yang Su , Yan Sun , Xin Zhou

Filamentary structure is important for the ISM and star formation. Galactic distribution of filaments may regulate the star formation rate in the Milky Way. However, interstellar filaments are intrinsically complex, making it difficult to…

星系天体物理 · 物理学 2024-06-12 Ke Wang , Yifei Ge , Tapas Baug

We characterize the kinematic and magnetic properties of HI filaments located in a high Galactic latitude region ($165^\circ < \alpha < 195^\circ$ and $12^\circ < \delta < 24^\circ$). We extract three-dimensional filamentary structures…

星系天体物理 · 物理学 2023-09-20 Doyeon Avery Kim , Susan E Clark , Mary E Putman , Larry Li

Based on the MWISP survey, we study high-z CO emission toward the tangent points, in which the distances of the molecular clouds (MCs) are well determined. In the region of l=12-26 deg and |b|<5.1 deg, a total of 321 MCs with |z|> 110 pc…

星系天体物理 · 物理学 2022-05-17 Yang Su , Shiyu Zhang , Ji Yang , Qing-Zeng Yan , Yan Sun , Hongchi Wang , Shaobo Zhang , Xuepeng Chen , Zhiwei Chen , Xin Zhou , Lixia Yuan

We present observations of $J$=1-0 transition lines of ${ }^{12} \mathrm{CO}$, ${ }^{13} \mathrm{CO}$, and $\mathrm{C}^{18} \mathrm{O}$ towards the Galactic region of $153.60^{\circ} \leqslant l \leqslant 156.50^{\circ}$ and $1.85^{\circ}…

We present large-field (4.25~$\times$~3.75 deg$^2$) mapping observations toward the Galactic region centered at $l = 150\arcdeg, b = 3.5\arcdeg$ in the $J = 1-0$ emission line of CO isotopologues ($^{12}$CO, $^{13}$CO, and C$^{18}$O), using…

星系天体物理 · 物理学 2017-03-27 Fang Xiong , Xuepeng Chen , Ji Yang , Min Fang , Shaobo Zhang , Miaomiao Zhang , Xinyu Du , Wenshan Long

We present results of a wide-field (approximately 60 x 90 pc) ALMA mosaic of CO(2-1) and $^{13}$CO(2-1) emission from the molecular cloud associated with the 30 Doradus star-forming region. Three main emission complexes, including two…

We report discovery of two CO clouds which are likely falling down to the Galactic plane at more than $35$ km s$^{-1}$. The clouds show head-tail distributions elongated perpendicular to the Galactic plane at $l=331.6^{\circ}$ and…

We present an investigation into the morphological features of the Milky Way. We use smoothed particle hydrodynamics (SPH) to simulate the interstellar medium (ISM) in the Milky Way under the effect of a number of different gravitational…

星系天体物理 · 物理学 2015-06-22 Alex R. Pettitt , Clare L. Dobbs , David M. Acreman , Daniel J. Price

We present the first data release (DR1) of the Milky Way Imaging Scroll Painting (MWISP) survey, a mapping in the J=(1-0) transition lines of 12CO, 13CO, and C18O toward the northern Galactic plane during 2011-2022. The MWISP survey was…

There is mounting evidence for an extra-planar gas layer around the Milky Way disk, similar to the anomalous HI gas detected in a few other galaxies. As much as 10% of the gas may be in this phase. We analyze HI clouds located in the…

星系天体物理 · 物理学 2015-05-14 L. Dedes , P. W. M Kalberla

Data of $^{12}$CO/$^{13}$CO/C$^{18}$O $J=1\to0$ emission toward the Galactic plane region of $l=35^\circ$ to $45^\circ$ and $b= -5^\circ$ to $+5^\circ$ are available with the Milky Way Imaging Scroll Painting (MWISP) project. Using the…

星系天体物理 · 物理学 2020-09-30 Liang-Hao Lin , Hong-Chi Wang , Yang Su , Chong Li , Ji Yang
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