148 citations · 642 across the 19 of their papers we have counts for
19 papers
Revealing Hidden Cosmic Flows through the Zone of Avoidance with Deep Learning
Alexandra Dupuy, Donghui Jeong, Sungwook E. Hong +3
We present a refined deep-learning-based method to reconstruct the three-dimensional dark matter density, gravitational potential, and peculiar velocity fields in the Zone of Avoid…
In search for the Local Universe dynamical homogeneity scale with CF4++ peculiar velocities
Helene M. Courtois, Jeremy Mould, Amber M. Hollinger +2
This article explores an update to the cosmography of the local Universe within z=0.1, incorporating galaxy peculiar velocity datasets from the first data releases of WALLABY, FAST…
CHANCES, the Chilean Cluster Galaxy Evolution Survey: Selection and initial characterisation of clusters and superclusters
Cristóbal Sifón, Alexis Finoguenov, Christopher P. Haines +43
CHANCES, the CHileAN Cluster galaxy Evolution Survey, will study the evolution of galaxies in and around 100 massive galaxy clusters from the local Universe out to , and…
WALLABY Pilot Survey: the Tully-Fisher relation in the NGC 4808, Vela and NGC 5044 fields
Jeremy Mould, T. H. Jarrett, Hélène Courtois +18
The Tully-Fisher Relation (TFR) is a well-known empirical relationship between the luminosity of a spiral galaxy and its circular velocity, allowing us to estimate redshift indepen…
Dynamic cosmography of the local Universe: Laniakea and five more watershed superclusters
Alexandra Dupuy, Hélène M. Courtois
This article delivers the dynamical cosmography of the Local Universe within z=0.1 (1 giga light-years). We exploit the gravitational velocity field computed using the CosmicFlows-…
Gravity in the Local Universe : density and velocity fields using CosmicFlows-4
H. M. Courtois, A. Dupuy, D. Guinet +3
This article publicly releases three-dimensional reconstructions of the local Universe gravitational field below z=0.8 that were computed using the CosmicFlows-4 catalog of 56,000…
WALLABY Pre-Pilot and Pilot Survey: the Tully Fisher Relation in Eridanus, Hydra, Norma and NGC4636 fields
Hélène M. Courtois, Khaled Said, Jeremy Mould +28
The WALLABY pilot survey has been conducted using the Australian SKA Pathfinder (ASKAP). The integrated 21-cm HI line spectra are formed in a very different manner compared to usua…
Cosmicflows-4
R. Brent Tully, Ehsan Kourkchi, Hélène M. Courtois +14
With Cosmicflows-4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. Eight methodologies are employed, with the largest numbers coming from the correlations…
Anisotropic satellite accretion onto the Local Group with HESTIA
Alexandra Dupuy, Noam I. Libeskind, Yehuda Hoffman +9
How the cosmic web feeds halos, and fuels galaxy formation is an open question with wide implications. This study explores the mass assembly in the Local Group within the context o…
Cosmicflows-4: The Baryonic Tully-Fisher Relation Providing ~10,000 Distances
Ehsan Kourkchi, R. Brent Tully, Helene M. Courtois +2
The interstellar gas in spiral galaxies can constitute a significant fraction of the baryon mass and it has been demonstrated that the sum of stellar and gas components correlates…
Toward Cosmicflows-4: The \hi data catalog
A. Dupuy, H. M. Courtois, D. Guinet +2
In this study, we present an update of a compilation of line width measurements of neutral atomic hydrogen (HI) galaxy spectra at 21 cm wavelength. Our All Digital HI (ADHI) catalo…
Cosmicflows-4: The Catalog of ~10000 Tully-Fisher Distances
Ehsan Kourkchi, R. Brent Tully, Sarah Eftekharzadeh +14
We present the distances of 9792 spiral galaxies lying within 15,000 km/s using the relation between luminosity and rotation rate of spiral galaxies. The sample is dominantly, but…
Cosmicflows 4: The Calibration of Optical and Infrared Tully-Fisher Relations
Ehsan Kourkchi, R. Brent Tully, Gagandeep S. Anand +5
This study is a part of the Cosmicflows-4 project with the aim of measuring the distances of more than ~10,000 spiral galaxies in the local universe up to ~15,000 km/s. New HI line…
Segmenting the Universe into dynamically coherent basins
A. Dupuy, H. M. Courtois, N. Libeskind +1
This article explores in depth a watershed concept to partition the universe, introduced in \cite{2019MNRAS.489L...1D} and applied to the {\it Cosmicflows-3} observational dataset.…
A kinematic confirmation of the hidden Vela supercluster
Helene M. Courtois, Renee. C. Kraan-Korteweg, Alexandra Dupuy +2
The universe region obscured by the Milky Way is very large and only future blind large HI redshift, and targeted peculiar surveys on the outer borders will determine how much mass…
Global Attenuation in Spiral Galaxies in Optical and Infrared Bands
Ehsan Kourkchi, R. Brent Tully, J. Don Neill +3
The emerging light from a galaxy is under the influence of its own interstellar medium, as well as its spatial orientation. Considering a sample of 2,239 local spiral galaxies in o…
Partitioning the universe into gravitational basins using the cosmic velocity field
A. Dupuy, H. M. Courtois, F. Dupont +8
This letter presents a new approach using the cosmic peculiar velocity field to characterize the morphology and size of large scale structures in the local Universe. The algorithm…
An estimation of the Local growth rate from Cosmicflows-3 peculiar velocities
A. Dupuy, H. M. Courtois, B. Kubik
This article explores three usual estimators, noted as of the pairwise velocity, and of the observed two-point galaxy peculiar velocity correlation functions.…
Cosmicflows-3: Cold Spot Repeller?
Helene M. Courtois, R. Brent Tully, Yehuda Hoffman +3
The three-dimensional gravitational velocity field within z~0.1 has been modeled with the Wiener filter methodology applied to the Cosmicflows-3 compilation of galaxy distances. Th…