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We have quantified the average filamentarity of the galaxy distribution in seven nearly two dimensional strips from the SDSS DR5 using a volume limited sample in the absolute magnitude range -21 < M_r < -20. The average filamentarity of…

Astrophysics · Physics 2009-11-13 Biswajit Pandey , Somnath Bharadwaj

We have tested for luminosity, colour and morphology dependence of the degree of filamentarity in seven nearly two dimensional strips from the Sloan Digital Sky Survey Data Release Four (SDSS DR4). The analysis is carried out at various…

Astrophysics · Physics 2009-11-11 Biswajit Pandey , Somnath Bharadwaj

We studied superclusters of galaxies in a volume-limited sample extracted from the Sloan Digital Sky Survey Data Release 7 (SDSS/DR7) and from mock catalogues based on a semi-analytical model of galaxy evolution in the Millenium Simulation.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 M. V. Costa-Duarte , L. Sodré , F. Durret

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…

Cosmological simulations suggest that most of the matter in the Universe is distributed along filaments connecting galaxies. Illuminated by the cosmic UV background (UVB), these structures are expected to glow in fluorescent Lyman alpha…

According to the current standard model of Cosmology, matter in the Universe arranges itself along a network of filamentary structure. These filaments connect the main nodes of this so-called 'Cosmic Web', which are clusters of galaxies.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Matteo Maturi , Julian Merten

Filament finders are limited, among other things, by the abundance of spectroscopic redshift data. As there are proportionally more photometric redshift data than spectroscopic, we aim to use photometric data to improve and expand the areas…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-15 Moorits Mihkel Muru , Elmo Tempel

The variations of galaxy stellar masses and colour-types with the distance to projected cosmic filaments are quantified using the precise photometric redshifts of the COSMOS2015 catalogue extracted from COSMOS field (2 deg$^{2}$). Realistic…

Large-scale structure of Universe includes galaxy clusters connected by filaments. Voids occupy the rest of cosmic volume. The search of any dependencities in filament structure can give answer to more general questions about origin of…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-09 V. V. Voitsekhovskiy , A. V. Tugay

[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).…

Solar and Stellar Astrophysics · Physics 2016-06-08 Guang-Xing Li , J. S. Urquhart , S. Leurini , T. Csengeri , F. Wyrowski , K. M. Menten , F. Schuller

We present a new determination of the star-forming main sequence (MS), obtained through stacking 100k K-band-selected galaxies in the far-infrared (FIR) Herschel and James Clerk Maxwell Telescope (JCMT) imaging. By fitting the dust emission…

Astrophysics of Galaxies · Physics 2024-11-15 M. P. Koprowski , J. V. Wijesekera , J. S. Dunlop , D. J. McLeod , M. J. Michałowski , K. Lisiecki , R. J. McLure

The network of filaments with embedded clusters surrounding voids seen in maps derived from redshift surveys and reproduced in simulations has been referred to as the cosmic web. A complementary description is provided by considering the…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-23 Daniel Pomarede , Yehuda Hoffman , Helene M Courtois , R. Brent Tully

We compare the distribution of optically and Halpha (Ha) selected galaxies in the Southern half of the nearby Abell 85 (A85) cluster with the recently discovered X-ray filament (XRF). We search for galaxies where star formation (SF) may…

Astrophysics · Physics 2010-02-11 G. Boué , F. Durret , C. Adami , G. A. Mamon , O. Ilbert , V. Cayatte

We present a catalog of 3D Galactic HI filaments over 1/3 of the sky using Galactic Arecibo L-band Feed Array HI (GALFA-HI) data. The 3D filaments are defined to be linear HI features that are continuous in position-position-velocity (PPV)…

Astrophysics of Galaxies · Physics 2025-11-25 M. E. Putman , D. A. Kim , S. E. Clark , L. Li , C. Holm-Hansen , J. E. G. Peek

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…

Astrophysics of Galaxies · Physics 2022-01-06 Yifei Ge , Ke Wang

Context. The main feature of the spatial large-scale galaxy distribution is an intricate network of galaxy filaments. Although many attempts have been made to quantify this network, there is no unique and satisfactory recipe for that yet.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 R. S. Stoica , V. J. Martinez , E. Saar

Cosmic filaments, the most prominent features of the cosmic web, possibly hold untapped potential for cosmological inference. While it is natural to expect the structure of filaments to show universality similar to that seen in dark matter…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-20 Saee Dhawalikar , Aseem Paranjape

With the advent of several galaxy surveys targeting star-forming galaxies, it is important to have models capable of interpreting their spatial distribution in terms of astrophysical and cosmological parameters. To address this need, we…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-04 Sara Ortega-Martinez , Sergio Contreras , Raul Angulo

We present DisPerSE, a novel approach to the coherent multi-scale identification of all types of astrophysical structures, and in particular the filaments, in the large scale distribution of matter in the Universe. This method and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Thierry Sousbie

We investigate the role of the delineated cosmic web/filaments on the star formation activity by exploring a sample of 425 narrow-band selected H{\alpha} emitters, as well as 2846 color-color selected underlying star-forming galaxies for a…

Astrophysics of Galaxies · Physics 2015-06-23 Behnam Darvish , David Sobral , Bahram Mobasher , Nicholas Scoville , Philip Best , Laura Sales , Ian Smail
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