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We analyze two volume limited galaxy samples from the SDSS photometric and spectroscopic data to test the isotropy in the local Universe. We use information entropy to quantify the global anisotropy in the galaxy distribution at different…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-12 Suman Sarkar , Biswajit Pandey , Rishi Khatri

Current observations favour that the massive ultraviolet-bright clumps with a median stellar mass of $\sim 10^7~M_{\odot}$, ubiquitously observed in $z\sim 1-3$ galaxies, are star-forming regions formed in-situ in galaxies. It has been…

It is well known that the density and anisotropy profile in the inner regions of a stellar system with positive phase-space distribution function are not fully independent. Here we study the interplay between density profile and orbital…

Astrophysics · Physics 2009-11-13 Luca Ciotti , Lucia Morganti

We present new estimates of the spatial two-point correlation function of rich clusters of galaxies selected from the APM Galaxy Survey. We have measured redshifts for a sample of $364$ clusters out to a depth of $\sim 450\hmpc$. The…

Astrophysics · Physics 2016-06-08 G. B. Dalton , R. A. C. Croft , G. Efstathiou , W. J. Sutherland , S. J. Maddox , M. Davis

The cosmic web contains filamentary structure on a wide range of scales. On the largest scales, superclustering aligns multiple galaxy clusters along inter-cluster bridges, visible through their thermal Sunyaev-Zel'dovich signal in the…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-20 M. Lokken , R. Hložek , A. van Engelen , M. Madhavacheril , E. Baxter , J. DeRose , C. Doux , S. Pandey , E. S. Rykoff , G. Stein , C. To , T. M. C. Abbott , S. Adhikari , M. Aguena , S. Allam , F. Andrade-Oliveira , J. Annis , N. Battaglia , G. M. Bernstein , E. Bertin , J. R. Bond , D. Brooks , E. Calabrese , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , R. Cawthon , A. Choi , M. Costanzi , M. Crocce , L. N. da Costa , M. E. da Silva Pereira , J. De Vicente , S. Desai , J. P. Dietrich , P. Doel , J. Dunkley , S. Everett , A. E. Evrard , S. Ferraro , B. Flaugher , P. Fosalba , J. Frieman , P. A. Gallardo , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , J. C. Hill , M. Hilton , A. D. Hincks , S. R. Hinton , D. L. Hollowood , K. Honscheid , B. Hoyle , Z. Huang , J. P. Hughes , D. Huterer , B. Jain , D. J. James , T. Jeltema , K. Kuehn , M. Lima , M. A. G. Maia , J. L. Marshall , J. McMahon , P. Melchior , F. Menanteau , R. Miquel , J. J. Mohr , K. Moodley , R. Morgan , F. Nati , L. Page , R. L. C. Ogando , A. Palmese , F. Paz Chinchón , A. A. Plazas Malagón , A. Pieres , A. K. Romer , E. Rozo , E. Sanchez , V. Scarpine , A. Schillaci , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , E. Sheldon , T. Shin , C. Sifón , M. Smith , M. Soares-Santos , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , T. N. Varga , J. Weller , R. H. Wechsler , R. D. Wilkinson , E. J. Wollack , Z. Xu

We present the first study of the isotropy of the distribution of morphological types of galaxies in the Local Universe out to around 200 Mpc using more than 60,000 galaxies from the HyperLeda database. We divide the sky into two opposite…

Astrophysics of Galaxies · Physics 2017-01-18 Behnam Javanmardi , Pavel Kroupa

The sub-kpc scale gas structure encodes key information of giant molecular cloud (GMC) formation. Therefore, we aim for a quantitative description of molecular gas structure across 150-1000 pc using a sample of 8984 GMCs from 40 galaxies…

We report ALMA observations of the most massive (star forming) galaxy in the redshift range 3<z<4 within the whole GOODS-S field. We detect a large elongated structure of molecular gas around the massive primeval galaxy, traced by the…

The secondary anisotropies of the cosmic microwave background (CMB) provide a wealth of astrophysical and cosmological information. Pairing measurements of the CMB temperature map obtained by DR5 of the Atacama Cosmology Telescope (ACT)…

Cosmology and Nongalactic Astrophysics · Physics 2025-06-24 Boryana Hadzhiyska , Noah Sailer , Simone Ferraro

We investigate the molecular gas content and the excitation and fragmentation properties in the central region of the spiral galaxy Messier 81 in both the ^{12}CO(1-0) and ^{12}CO(2-1) transitions. We have recently observed the two…

Astrophysics · Physics 2009-11-13 V. Casasola , F. Combes , D. Bettoni , G. Galletta

The anisotropic galaxy 2-point correlation function (2PCF) allows measurement of the growth of large-scale structures from the effect of peculiar velocities on the clustering pattern. We present new measurements of the auto- and cross-…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-09 Felipe A. Marín , Florian Beutler , Chris Blake , Jun Koda , Eyal Kazin , Donald P. Schneider

We present spatially-resolved imaging obtained with the Australia Telescope Compact Array (ATCA) of three CO lines in two high-redshift gravitationally lensed dusty star-forming galaxies, discovered by the South Pole Telescope. Strong…

In this article, we explore the divergences and universal terms of the holographic entanglement entropy for singular regions in anisotropic and nonconformal theories that are holographically dual to geometries with a hyperscaling violation,…

High Energy Physics - Theory · Physics 2022-10-25 Mostafa Ghasemi , Shahrokh Parvizi

We present 3D kinematic observations of stars within the central 0.5 pc of the Milky Way nuclear star cluster using adaptive optics imaging and spectroscopy from the Keck telescopes. Recent observations have shown that the cluster has a…

Astrophysics of Galaxies · Physics 2015-06-17 T. Do , G. D. Martinez , S. Yelda , A. M. Ghez , J. Bullock , M. Kaplinghat , J. R. Lu , A. G. H. Peter , K. Phifer

Statistics that capture the directional dependence of the baryon distribution in the cosmic web enable unique tests of cosmology and astrophysical feedback. We use constrained oriented stacking of thermal Sunyaev-Zel'dovich (tSZ) maps to…

The number of galaxies with measured redshifts > 1 is at present rapidly increasing, allowing for measurements of their correlation function. The correlations function is measured in redshift space, as a function of angular separation and…

Astrophysics · Physics 2009-10-31 Vibhat Nair

We have obtained column density maps for an unbiased sample of 120 molecular clouds in the third quadrant of the Milky Way mid-plane (b$\le |5|^{\circ}$) within the galactic longitude range from 195$^{\circ}$ to 225$^{\circ}$, using the…

Astrophysics of Galaxies · Physics 2022-08-31 Yuehui Ma , Hongchi Wang , Miaomiao Zhang , Chen Wang , Shaobo Zhang , Yao Liu , Chong Li , Yuqing Zheng , Lixia Yuan , Ji Yang

Several phenomena related to the critical behaviour of non-interacting electrons in a disordered 2d tight-binding system with a magnetic field are studied. Localization lengths, critical exponents and density of states are computed using…

Disordered Systems and Neural Networks · Physics 2009-10-31 Marc Ruhlander , C. M. Soukoulis

The massive infrared dark cloud G0.253+0.016 projected 45pc from the Galactic centre contains ~10^5Msun of dense gas whilst being mostly devoid of observed star-formation tracers. To scrutinise the physical properties, dynamics and…

Astrophysics of Galaxies · Physics 2014-11-12 K. G. Johnston , H. Beuther , H. Linz , A. Schmiedeke , S. E. Ragan , Th. Henning
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