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Related papers: Galactic Cold Cores. VIII. Filament formation and …

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The formation of stars is inextricably linked to the structure of their parental molecular clouds. Here we take a number of nearby giant molecular clouds (GMCs) and analyse their column density and mass distributions. This investigation is…

Astrophysics of Galaxies · Physics 2015-05-18 D. Froebrich , J. Rowles

We examine the cloud structure around the Planck detections in 71 fields observed with the Herschel SPIRE instrument. We wish to determine the general physical characteristics of the fields and to examine the morphology of the clouds where…

We studied the hub filament system G323.46-0.08 based on archival molecular line data from the SEDIGISM 13CO survey and infrared data from the GLIMPSE, MIPS, and Hi-GAL surveys. G323.46-0.08 consists of three filaments, F-north, F-west, and…

We report on the possibility of studying the proprieties of cosmic diffuse baryons by studying self-gravitating clumps and filaments connected to galaxy clusters. While filaments are challenging to detect with X-ray observations, the higher…

Cosmology and Nongalactic Astrophysics · Physics 2021-10-04 M. Angelinelli , S. Ettori , F. Vazza , T. W. Jones

The mid- and far-infrared view on high-mass star formation, in particular with the results from the Herschel space observatory, has shed light on many aspects of massive star formation. However, these continuum studies lack kinematic…

Astrophysics of Galaxies · Physics 2014-05-21 J. Tackenberg , H. Beuther , Th. Henning , H. Linz , T. Sakai , S. E. Ragan , O. Krause , M. Nielbock , M. Hennemann , J. Pitann , A. Schmiedeke

Galaxy filaments are a peculiar environment, and their impact on the galaxy properties is still controversial. Exploiting the data from the GAs Stripping Phenomena in galaxies with MUSE (GASP), we provide the first characterisation of the…

We present idealized numerical simulations of prestellar gravitational collapse of a moderate initial filamentary perturbation with an additional central ellipsoidal enhancement (a core) considering a uniform, and a stratified background,…

Astrophysics of Galaxies · Physics 2022-01-12 Raúl Naranjo-Romero , Enrique Vázquez-Semadeni , Robert M. Loughnane

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…

In order to develop a more comprehensive picture of star formation, it is essential to understand the physical relationship between dense cores and the filaments embedding them. There is evidence that magnetic fields play a crucial role in…

Galaxy physical properties are influenced by their environments, but the processes responsible for mass and environmental quenching and structural transformations remain debated. Galaxy clusters are ideal laboratories for investigating…

Context: Molecular clouds are the prime locations of star formation. These clouds contain filamentary structures and cores which are crucial in the formation of young stars. Aims: In this work, we aim to quantify the physical properties of…

Astrophysics of Galaxies · Physics 2024-03-19 Divyansh Dewan , Archana Soam , Guo-Yin Zhang , Akhil Lasrado , Saikhom Pravash Singh , Chang Won Lee

We have explored the dynamical and mass evolution of halos driven by large-scale filaments using a dark matter-only cosmological simulation with the help of a phase-space analysis. Since a non-negligible number of galaxies is expected to…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-18 Hannah Jhee , Hyunmi Song , Rory Smith , Jihye Shin , Inkyu Park , Clotilde Laigle

Observations show that galaxies and their interstellar media are pervaded by strong magnetic fields with energies in the diffuse component being at least comparable to the thermal and even as large or larger than the turbulent energy. Such…

Astrophysics of Galaxies · Physics 2018-06-06 Bastian Körtgen , Robi Banerjee , Ralph E. Pudritz , Wolfram Schmidt

Infrared Dark Clouds (IRDCs) are unique laboratories to study the initial conditions of high-mass star and star cluster formation. We present high-sensitivity and high-angular resolution IRAM PdBI observations of N2H+ (1-0) towards IRDC…

Solar and Stellar Astrophysics · Physics 2014-03-07 Jonathan D. Henshaw , Paola Caselli , Francesco Fontani , Izaskun Jimenez-Serra , Jonathan C. Tan

Galaxies form and evolve within the diverse environments of the cosmic web. However, disentangling the effects of internal properties, local environments, and large-scale structures (LSS) on galaxy evolution involvessignificant…

Astrophysics of Galaxies · Physics 2025-04-04 Stefano Zarattini , J. Alfonso L. Aguerri

We describe the results of a sequence of simulations of gravitational collapse in a turbulent magnetized region. The parameters are chosen to be representative of molecular cloud material. We find that several protostellar cores and…

Astrophysics · Physics 2009-11-06 D. Balsara , D. Ward-Thompson , R. M. Crutcher

The first radio surveys of the sky discovered that some large clusters of galaxies contained powerful sources of synchrotron emission. Optical images showed that long linear filaments with bizarre emission-line spectra permeated the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Gary J. Ferland

In the context of star formation through fragmentation of an extremely metal-deficient protogalactic cloud, the gravitational collapse of filamentary gas clouds is explored with 1D numerical hydrodynamics coupled with non-equilibrium…

Astrophysics · Physics 2009-11-07 Fumitaka Nakamura , Masayuki Umemura

The structure of cloud complexes appears to be well described by a "tree structure" representation when the image is partitioned into "clouds". In this representation, the parent-child relationships are assigned according to containment.…

Astrophysics · Physics 2007-05-23 Nestor Sanchez , Antonio Parravano

The role of the cosmic web in shaping galaxy properties is investigated in the GAMA spectroscopic survey in the redshift range $0.03 \leq z \leq 0.25$. The stellar mass, $u - r$ dust corrected colour and specific star formation rate (sSFR)…