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The interstellar medium has a highly filamentary and hierarchical structure, which may play a significant role in star formation. A systematical study on the large-scale filaments towards their physical parameters, distribution, structures…

星系天体物理 · 物理学 2022-01-06 Yifei Ge , Ke Wang

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

Context. Filamentary structures in the interstellar medium are closely related to star formation. Dense gas mass fraction (DGMF) or clump formation efficiency in large-scale filaments possibly determine their hosting star formation…

Throughout the Milky Way, molecular clouds typically appear filamentary, and mounting evidence indicates that this morphology plays an important role in star formation. What is not known is to what extent the dense filaments most closely…

The recent data collected by {\it Herschel} have confirmed that interstellar structures with filamentary shape are ubiquitously present in the Milky Way. Filaments are thought to be formed by several physical mechanisms acting from the…

The ubiquity of filamentary structure at various scales through out the Galaxy has triggered a renewed interest in their formation, evolution, and role in star formation. The largest filaments can reach up to Galactic scale as part of the…

星系天体物理 · 物理学 2015-07-09 Ke Wang , Leonardo Testi , Adam Ginsburg , C. Malcolm Walmsley , Sergio Molinari , Eugenio Schisano

The characterization of our Galaxy's longest filamentary gas features has been the subject of several studies in recent years, producing not only a sizeable sample of large-scale filaments, but also confusion as to whether all these…

星系天体物理 · 物理学 2018-09-19 Catherine Zucker , Cara Battersby , Alyssa Goodman

We present a new method to identify large scale filaments and apply it to a cosmological simulation. Using positions of haloes above a given mass as node tracers, we look for filaments between them using the positions and masses of all the…

宇宙学与河外天体物理 · 物理学 2011-02-22 Roberto E. Gonzalez , Nelson E. Padilla

Using a population of large-scale filaments extracted from an AREPO simulation of a Milky Way-like galaxy, we seek to understand the extent to which observed large-scale filament properties (with lengths $\gtrsim 100$ pc) can be explained…

星系天体物理 · 物理学 2020-01-01 Catherine Zucker , Rowan Smith , Alyssa Goodman

Observations of molecular clouds reveal a complex structure, with gas and dust often arranged in filamentary rather than spherical geometries. The associations of pre- and proto- stellar cores with the filaments suggest a direct link with…

[Abridged] Aims. We study the properties of filamentary structures from the ATLASGAL survey. Methods. We use the DisPerSE algorithm to identify spatially coherent structures located across the inner-Galaxy (300 < l < 60 and |b| < 1.5).…

太阳与恒星天体物理 · 物理学 2016-06-08 Guang-Xing Li , J. S. Urquhart , S. Leurini , T. Csengeri , F. Wyrowski , K. M. Menten , F. Schuller

As the environment harbouring the majority of galaxies, filaments are thought to play a key role in the co-evolution of galaxies and the cosmic web. In this first part of a series to understand the link between galaxies and filaments…

星系天体物理 · 物理学 2025-10-15 Yannick M. Bahe , Pascale Jablonka

The main feature of the spatial large-scale galaxy distribution is its intricate network of galaxy filaments. This network is spanned by the galaxy locations that can be interpreted as a three-dimensional point distribution. The global…

宇宙学与河外天体物理 · 物理学 2015-06-16 E. Tempel , R. S. Stoica , V. J. Martinez , L. J. Liivamägi , G. Castellan , E. Saar

Context. Filaments are ubiquitous in the Galaxy, and they host star formation. Detecting them in a reliable way is therefore key towards our understanding of the star formation process. Aims. We explore whether supervised machine learning…

Numerical simulations and observations show that galaxies are not uniformly distributed in the universe but, rather, they are spread across a filamentary structure. In this large-scale pattern, highly dense regions are linked together by…

宇宙学与河外天体物理 · 物理学 2020-09-16 T. Bonnaire , N. Aghanim , A. Decelle , M. Douspis

Filaments are crucial components of the cosmic web, representing the extensive and aligned distributions of galaxies and gas. Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we report the detection of a filament in…

宇宙学与河外天体物理 · 物理学 2026-01-26 Jin-Long Xu , Ming Zhu , Peng Jiang , Nai-Ping Yu , Chuan-Peng Zhang , Xiao-Lan Liu , Mei Ai , Yin-Jie Jing , Jie Wang

Filamentary structures are common morphological features of the cold, molecular interstellar medium (ISM). Recent studies have discovered massive, hundred-parsec-scale filaments that may be connected to the large-scale, Galactic spiral arm…

星系天体物理 · 物理学 2016-06-01 J. Abreu-Vicente , S. Ragan , J. Kainulainen , Th. Henning , H. Beuther , K. Johnston

Large scale filaments, with lengths that can reach tens of Mpc, are the most prominent features in the cosmic web. These filaments have only been observed indirectly through the positions of galaxies in large galaxy surveys or through…

宇宙学与河外天体物理 · 物理学 2018-11-07 Robin Kooistra , Marta B. Silva , Saleem Zaroubi

We present a sensitive $\lambda$20cm VLA continuum survey of the Galactic center region using new and archival data based on multi-configuration observations taken with relatively uniform {\it uv} coverage. The high dynamic range images…

天体物理学 · 物理学 2009-05-29 F. Yusef-Zadeh , J. Hewitt , W. Cotton

The characterization of the internal structure of the superclusters of galaxies (walls, filaments and knots where the clusters are located) is paramount for understanding the formation of the Large Scale Structure and for outlining the…

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