Results 1 to 10 of about 280,504 (183)

Structure and Kinematics of Sh2-138—A Distant Hub-filament System in the Outer Galactic Plane

The Astrophysical Journal, 2023
We present a molecular line study of the Sh2-138 (IRAS 22308+5812) hub-filament system with the aim of investigating its structure and kinematics. Archival CO molecular line data from the Canadian Galactic Plane Survey (CO( J = 1–0)) for the wider region
Kshitiz K. Mallick, Lokesh K. Dewangan, Devendra K. Ojha, Tapas Baug, Igor I. Zinchenko   +4 more
doaj   +1 more source

Magnetic Field of a Ring-like Molecular Cloud

The Astronomical Journal
We present a detailed study of the magnetic field structure in the G111 molecular cloud, a ring-like filamentary cloud within the NGC 7538 region. Our analysis combines multiwavelength polarization data and molecular-line observations to investigate the ...
Dana Alina, Adel Umirbayeva, Yasuo Doi, Soichiro Jo, Yue Hu, Alex Lazarian, Janik Karoly, Tie Liu, Koji S. Kawabata, Alua Mukhash, Danial Zhumagayir, Tomori Hori, Tetsuharu Maruta, Ryo Imazawa, Tatsuya Nakaoka, Mahito Sasada   +15 more
doaj   +1 more source

B-fields and Dust in Interstellar Filaments Using Dust Polarization (BALLAD-POL). VI. Grain Alignment Mechanisms in the Massive Quiescent Filament G16.96+0.27 Using Dust Polarization Observations from JCMT/POL-2

The Astrophysical Journal Supplement Series
Dust polarization induced by aligned nonspherical grains acts as an important tool to trace the magnetic field ( B -field) morphologies and strengths in molecular clouds and constrain grain properties and their alignment mechanisms.
Saikhom Pravash, Thiem Hoang, Archana Soam, Qi-Lao Gu, Tie Liu, Pham Ngoc Diep, Le Ngoc Tram, Nguyen Bich Ngoc   +7 more
doaj   +1 more source

CMR Exploration. II. Filament Identification with Machine Learning

The Astrophysical Journal, 2023
We adopt magnetohydrodynamic simulations that model the formation of filamentary molecular clouds via the collision-induced magnetic reconnection (CMR) mechanism under varying physical conditions.
Duo Xu, Shuo Kong, Avichal Kaul, Héctor G. Arce, Volker Ossenkopf-Okada   +4 more
doaj   +1 more source

Magnetically Aligned Striations in the L914 Filamentary Cloud

The Astronomical Journal
We present CO( J = 1–0) multiline observations toward the L914 dark cloud in the vicinity of the Cygnus X region, using the 13.7 m millimeter telescope of the Purple Mountain Observatory.
Li Sun, Xuepeng Chen, Min Fang, Shaobo Zhang, Yan Gong, Jiancheng Feng, Xuefu Li, Qing-Zeng Yan, Ji Yang   +8 more
doaj   +1 more source

The ALMA-QUARKS Survey: Fibers’ Role in Star Formation Unveiled in an Intermediate-mass Protocluster Region of the Vela D Cloud

The Astrophysical Journal
In this paper, we present a detailed analysis of the IRS 17 filament within the intermediate-mass protocluster IRAS 08448-4343 (of ∼10 ^3 L _⊙ ), using ALMA data from the ATOMS 3 mm and QUARKS 1.3 mm surveys.
Dongting Yang, Hong-Li Liu, Tie Liu, Anandmayee Tej, Xunchuan Liu, Jinhua He, Guido Garay, Amelia Stutz, Lei Zhu, Sheng-Li Qin, Fengwei Xu, Pak-Shing Li, Mika Juvela, Pablo García, Paul F. Goldsmith, Siju Zhang, Xindi Tang, Patricio Sanhueza, Shanghuo Li, Chang Won Lee, Swagat Ranjan Das, Wenyu Jiao, Xiaofeng Mai, Prasanta Gorai, Yichen Zhang, Zhiyuan Ren, L. Viktor Tóth, Jihye Hwang, Leonardo Bronfman, Ken’ichi Tatematsu, Lokesh Dewangan, James O. Chibueze, Suinan Zhang, Gang Wu, Jinjin Xie   +34 more
doaj   +1 more source

Reconstructing the 3D Structure of Filamentary Structures with the Elliptical Inverse Abel Transformation Method

The Astrophysical Journal
The study of the volume density distribution of filamentary structures in molecular clouds is crucial for investigating the mechanism of star formation and can reveal the fragmentation process under the effects of gravitational collapse, magnetic fields,
Yapeng Zhang, Shibo Yuan, Weiming An, Yongli Ping, Jiayong Zhong   +4 more
doaj   +1 more source

G321.93-0.01: A Rare Site of Multiple Hub-filament Systems with Evidence of Collision and Merging of Filaments

The Astronomical Journal
Hub-filament systems (HFSs) are potential sites of massive star formation (MSF). To understand the role of filaments in MSF and the origin of HFSs, we conducted a multiscale and multiwavelength observational investigation of the molecular cloud G321.93–0.
A. K. Maity, L. K. Dewangan, N. K. Bhadari, Y. Fukui, A. Haj Ismail, O. R. Jadhav, Saurabh Sharma, H. Sano   +7 more
doaj   +1 more source

Galactic Large-scale Filaments Resident in Asymmetric Environments: Clues from Cross-filament Profiles of Density and Temperature

The Astrophysical Journal
Large-scale filaments ubiquitously exist in the Galactic interstellar medium, and their radial profiles offer insights into their formation mechanisms. We present a statistical analysis of molecular hydrogen column density (N(H _2 )) and dust temperature
Keyun Su, Ke Wang, Fengwei Xu, N. K. Bhadari   +3 more
doaj   +1 more source

The Structure of an 80 Parsec Long Massive Filament

The Astronomical Journal
Using new Institut de Radioastronomie Millimétrique 30 m telescope N _2 H ^+ , C ^18 O J  = 1–0 and Atacama Pathfinder Experiment telescope ^13 CO and C ^18 O J  = 2–1 maps together with archival far-infrared continuum data, and ^12 CO, and ^13 CO J  = 1–
Qian-Ru He, Won-Ju Kim, Gary A. Fuller, Alessio Traficante, Seamus D. Clarke, Yu Gao, Xue-Peng Chen, Min Fang, Ke Wang, En Chen, Tapas Baug, Xiao-Long Wang, Chen Wang, Yong-Xiong Wang   +13 more
doaj   +1 more source