SatGen: a semi-analytical satellite galaxy generator – I. The model and its application to Local-Group satellite statistics [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We present a semi-analytical model of satellite galaxies, SatGen, which can generate large statistical samples of satellite populations for a host halo of desired mass, redshift, and assembly history. The model combines dark matter (DM) halo merger trees, empirical relations for the galaxy–halo connection, and analytical ...
Fangzhou Jiang +7 more
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Galaxy rotation curves from general relativity with renormalization group corrections [PDF]
Journal of Cosmology and Astroparticle Physics, 2010 We consider the application of quantum corrections computed using renormalization group arguments in the astrophysical domain and show that, for the most natural interpretation of the renormalization group scale parameter, a gravitational coupling parameter $G$ varying $10^{-7}$ of its value across a galaxy (which is roughly a variation of $10^{-12 ...
Rodrigues, Davi C. +2 more
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THE NEXT GENERATION VIRGO CLUSTER SURVEY. VII. THE INTRINSIC SHAPES OF LOW-LUMINOSITY GALAXIES IN THE CORE OF THE VIRGO CLUSTER, AND A COMPARISON WITH THE LOCAL GROUP [PDF]
The Astrophysical Journal, 2016 ABSTRACT We investigate the intrinsic shapes of low-luminosity galaxies in the central 300 kpc of the Virgo Cluster using deep imaging obtained as part of the Next Generation Virgo Cluster Survey (NGVS). We build a sample of nearly 300 red-sequence cluster members in the yet-unexplored −14 < M g
Rubén Sánchez-Janssen +19 more
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Elliptical galaxies kinematics within general relativity with renormalization group effects [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 28 pages. v3: An appendix on the running of Lambda inside galaxies was added.
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Galaxy Rotation Curves from General Relativity with Infrared Renormalization Group Effects
, 2011 We review our contribution to infrared Renormalization Group (RG) effects to General Relativity in the context of galaxies. Considering the effective action approach to Quantum Field Theory in curved background, we argued that the proper RG energy scale, in the weak field limit, should be related to the Newtonian potential.
Rodrigues, Davi C. +2 more
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, 2015 This white paper discusses how a "next-generation" Very Large Array (ngVLA) operating in the frequency range 1-116 GHz could be a groundbreaking tool to study the detailed astrophysics of the "matter cycle" in the Milky Way and other galaxies. If optimized for high brightness sensitivity, the ngVLA would bring detailed microwave spectroscopy and ...
Leroy, Adam K. +21 more
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Astronomy and ComputingWe introduce Nessie, a galaxy group finder implemented in Rust and distributed as both a Python and R package. Nessie employs the friends-of-friends (FoF) algorithm and requires only on-sky position and redshift as input, making it immediately applicable to surveys that lack a well-defined luminosity function.
Trystan S. Lambert +6 more
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, 2015 The Next-Generation Very Large Array (ngVLA) will be critical for understanding how galaxies are built and evolve at the earliest epochs. The sensitivity and frequency coverage will allow for the detection of cold gas and dust in `normal' distant galaxies, including the low-J transitions of molecular gas tracers such as CO, HNC, and HCO+; synchrotron ...
Casey, Caitlin M. +16 more
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Elliptical galaxies kinematics within general relativity with renormalization group effects [PDF]
Proceedings of VIII International Workshop on the Dark Side of the Universe — PoS(DSU 2012), 2013 DAVI CABRAL RODRIGUES +3 more
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Is the misalignment of the Local Group velocity and the dipole generated by the 2MASS Redshift Survey typical in
Physical Review D, 2009 Pirin Erdoğdu, Ofer Lahav
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