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We present new observations of the active star-formation region NGC 1333 in the Perseus molecular cloud complex from the James Clerk Maxwell Telescope B-Fields In Star-forming Region Observations (BISTRO) survey with the POL-2 instrument.…

Astrophysics of Galaxies · Physics 2021-04-28 Yasuo Doi , Tetsuo Hasegawa , Ray S. Furuya , Simon Coudé , Charles L. H. Hull , Doris Arzoumanian , Pierre Bastien , Michael Chun-Yuan Chen , James di Francesco , Rachel Friesen , Martin Houde , Shu-ichiro Inutsuka , Steve Mairs , Masafumi Matsumura , Takashi Onaka , Sarah Sadavoy , Yoshito Shimajiri , Mehrnoosh Tahani , Kohji Tomisaka , Chakali Eswaraiah , Patrick M. Koch , Kate Pattle , Chang Won Lee , Motohide Tamura , David Berry , Tao-Chung Ching , Jihye Hwang , Woojin Kwon , Archana Soam , Jia-Wei Wang , Shih-Ping Lai , Keping Qiu , Derek Ward-Thompson , Do-Young Byun , Huei-Ru V. Chen , Wen Ping Chen , Zhiwei Chen , Jungyeon Cho , Minho Choi , Yunhee Choi , Antonio Chrysostomou , Eun Jung Chung , Pham Ngoc Diep , Hao-Yuan Duan , Lapo Fanciullo , Jason Fiege , Erica Franzmann , Per Friberg , Gary Fuller , Tim Gledhill , Sarah F. Graves , Jane S. Greaves , Matt J. Griffin , Qilao Gu , Ilseung Han , Jennifer Hatchell , Saeko S. Hayashi , Thiem Hoang , Tsuyoshi Inoue , Kazunari Iwasaki , Il-Gyo Jeong , Doug Johnstone , Yoshihiro Kanamori , Ji-hyun Kang , Miju Kang , Sung-Ju Kang , Akimasa Kataoka , Koji S. Kawabata , Francisca Kemper , Gwanjeong Kim , Jongsoo Kim , Kee-Tae Kim , Kyoung Hee Kim , Mi-Ryang Kim , Shinyoung Kim , Jason M. Kirk , Masato I. N. Kobayashi , Vera Konyves , Takayoshi Kusune , Jungmi Kwon , Kevin Lacaille , Chi-Yan Law , Chin-Fei Lee , Hyeseung Lee , Jeong-Eun Lee , Sang-Sung Lee , Yong-Hee Lee , Dalei Li , Di Li , Hua-Bai Li , Hong-Li Liu , Junhao Liu , Sheng-Yuan Liu , Tie Liu , Ilse de Looze , A-Ran Lyo , Brenda C. Matthews , Gerald H. Moriarty-Schieven , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nagayoshi Ohashi , Geumsook Park , Harriet Parsons , Nicolas Peretto , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Mark G. Rawlings , Brendan Retter , John Richer , Andrew Rigby , Hiro Saito , Giorgio Savini , Anna M. M. Scaife , Masumichi Seta , Hiroko Shinnaga , Ya-Wen Tang , Yusuke Tsukamoto , Serena Viti , Hongchi Wang , Anthony P. Whitworth , Hsi-Wei Yen , Hyunju Yoo , Jinghua Yuan , Hyeong-Sik Yun , Tetsuya Zenko , Chuan-Peng Zhang , Guoyin Zhang , Yapeng Zhang , Jianjun Zhou , Lei Zhu , Philippe André , C. Darren Dowell , Stewart P. S. Eyres , Sam Falle , Sven van Loo , Jean-François Robitaille

We decomposed the molecular gas in the spiral galaxy NGC 628 (M74) into multi-scale hub-filament structures using the CO (2-1) line by the dendrogram algorithm. All leaf structures as potential hubs were classified into three categories,…

Astrophysics of Galaxies · Physics 2024-09-06 J. W. Zhou , Sami Dib , Timothy A. Davis

Using wide-field $^{13}$CO ($J=1-0$) data taken with the Nobeyama 45-m telescope, we investigate cloud structures of the infrared dark cloud complex in M17 with SCIMES. In total, we identified 118 clouds that contain 11 large clouds with…

Thermal dust continuum polarimetry is a powerful indirect probe of magnetic field geometry in dense molecular clouds while at the same time providing information on the alignment of dust grains with the magnetic field. The leading theory of…

The obscuring structure surrounding active galactic nuclei (AGN) can be explained as a dust and gas flow cycle that fundamentally connects the AGN with their host galaxies. This structure is believed to be associated with dusty winds driven…

We present high-resolution ($\sim$1000 AU) 3 mm observations with the NOrthern Extended Millimeter Array toward the DR21 South Filament, aiming to reveal its internal fragmentation and search for deeply embedded star-forming activities.…

Astrophysics of Galaxies · Physics 2026-02-13 Kai Yang , Keping Qiu , Xing Pan

We present synthetic dust polarisation maps of 3D magneto-hydrodynamical simulations of molecular clouds before the onset of stellar feedback. The clouds are modelled within the SILCC-Zoom project and are embedded in their galactic…

Astrophysics of Galaxies · Physics 2018-10-31 D. Seifried , S. Walch , S. Reissl , J. C. Ibáñez-Mejía

Magnetic fields influence the structure and evolution of protostellar systems, thus understanding their role is essential for probing the earliest stages of star formation. We present ALMA Band 3 and 6 polarized continuum observations at…

Solar and Stellar Astrophysics · Physics 2025-10-01 Youngwoo Choi , Woojin Kwon , Leslie W. Looney , Ian W. Stephens , Zhi-Yun Li , Floris F. S. van der Tak , John J. Tobin

To investigate the effects of stellar feedback on the gravitational state of giant molecular clouds (GMCs), we study $^{12}$CO and $^{13}$CO ALMA maps of nine GMCs distributed throughout the Large Magellanic Cloud (LMC), the nearest…

We present optical and near-infrared stellar polarization observations toward the dark filamentary clouds associated with IC5146. The data allow us to investigate the dust properties (this paper) and the magnetic field structure (Paper II).…

Astrophysics of Galaxies · Physics 2017-11-15 Jia-Wei Wang , Shih-Ping Lai , C. Eswaraiah , Dan P. Clemens , Wen-Ping Chen , A. K. Pandey

We carried out optical polarimetry of an isolated cloud, Gal 110-13, to map the plane-of-the-sky magnetic field geometry. The main aim of the study is to understand the most plausible mechanism responsible for the unusual cometary shape of…

Solar and Stellar Astrophysics · Physics 2016-03-16 S. Neha , G. Maheswar , A. Soam , C. W. Lee , A. Tej

We compare the structure of synthetic dust polarization with synthetic molecular line emission from radiative transfer calculations using a 3-dimensional, turbulent collapsing-cloud magnetohydrodynamics simulation. The histogram of relative…

Astrophysics of Galaxies · Physics 2023-03-29 Renato Mazzei , Zhi-Yun Li , Che-Yu Chen , Laura Fissel , Mike Chen , James Park

The characterization of magnetic fields within molecular clouds is fundamental to understanding star formation processes. Accurately gauging the three-dimensional structure of these fields presents a challenge, as observational techniques…

Astrophysics of Galaxies · Physics 2024-11-18 Brandon Shane , Blakesley Burkhart , Laura Fissel , Susan E. Clark , Philip Mocz , Michael M. Foley

Many massive galaxies at the centres of relaxed galaxy clusters and groups have vast reservoirs of cool (~10,000 K) and cold (~100 K) gas. In many low redshift brightest group and cluster galaxies this gas is lifted into the hot ISM in…

We use numerical simulations of turbulent cluster-forming regions to study the nature of dense filamentary structures in star formation. Using four hydrodynamic and magnetohydrodynamic simulations chosen to match observations, we identify…

Astrophysics of Galaxies · Physics 2015-06-23 Helen Kirk , Ralph Pudritz , Mikhail Klassen , Samantha Pillsworth

We present the results of molecular line observations performed toward the NGC 2068 and NGC 2071 regions of the Orion B cloud as the TRAO-FUNS project to study the roles of the filamentary structure in the formation of dense cores and stars…

We present three-frequency VLA observations of the flocculent spiral galaxy NGC 4414 made in order to study the magnetic field structure in absence of strong density wave flows. NGC 4414 shows a regular spiral pattern of observed…

Astrophysics · Physics 2009-11-07 M. Soida , R. Beck , M. Urbanik , J. Braine

In recent years, there were studies on the omnipresence and structures of filaments in star-forming regions, and the role of their fragmentation in the process of star formation. However, only a few studies analysed the evolution of…

Astrophysics of Galaxies · Physics 2018-06-07 Roxana-Adela Chira

Kinematic distances to 750 molecular clouds identified in the 13CO J=1-0 Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey (BU-FCRAO GRS) are derived assuming the Clemens rotation curve of the Galaxy. The…

Astrophysics of Galaxies · Physics 2009-07-22 Julia Roman-Duval , James M. Jackson , Mark Heyer , Alexis Johnson , Jill Rathborne , Ronak Shah , Robert Simon

We have carried out an extensive survey of magnetic field strengths toward dark cloud cores in order to test models of star formation: ambipolar-diffusion driven or turbulence driven. The survey involved $\sim500$ hours of observing with…

Astrophysics · Physics 2009-11-13 Thomas H. Troland , Richard M. Crutcher