Zobrazeno 1 - 10
of 720
pro vyhledávání: '"Hudson, Michael P"'
In this work, we develop a simulation-based model to predict the density split (DSS) and second-order shear and clustering statistics. A simulation-based model has the potential to model highly non-linear scales where current DSS models fail. To buil
Externí odkaz:
http://arxiv.org/abs/2406.05098
Autor:
Li, Qinxun, Kilbinger, Martin, Luo, Wentao, Wang, Kai, Wang, Huiyuan, Wittje, Anna, Hildebrandt, Hendrik, van Waerbeke, Ludovic, Hudson, Michael J., Farrens, Samuel, Liaudat, Tobias I., Liu, Huiling, Zhang, Ziwen, Wang, Qingqing, Russier, Elisa, Guinot, Axel, Baumont, Lucie, Peters, Fabian Hervas, de Boer, Thomas, Wang, Jiaqi
This letter presents, for the first time, direct constraints on the black-hole-to-halo-mass relation using weak gravitational lensing measurements. We construct type I and type II Active Galactic Nuclei (AGNs) samples from the Sloan Digital Sky Surve
Externí odkaz:
http://arxiv.org/abs/2402.10740
Cosmological parameters can be measured by comparing peculiar velocities with those predicted from a galaxy density field. Previous work has tested the accuracy of this approach with N-body simulations, but generally on idealised mock galaxy surveys.
Externí odkaz:
http://arxiv.org/abs/2312.03904
Autor:
Smith, Simon E. T., Cerny, William, Hayes, Christian R., Sestito, Federico, Jensen, Jaclyn, McConnachie, Alan W., Geha, Marla, Navarro, Julio, Li, Ting S., Cuillandre, Jean-Charles, Errani, Raphaël, Chambers, Ken, Gwyn, Stephen, Hammer, Francois, Hudson, Michael J., Magnier, Eugene, Martin, Nicolas
We present the discovery of Ursa Major III/UNIONS 1, the least luminous known satellite of the Milky Way, which is estimated to have an absolute V-band magnitude of $+2.2^{+0.4}_{-0.3}$ mag, equivalent to a total stellar mass of 16$^{+6}_{-5}$ M$_{\o
Externí odkaz:
http://arxiv.org/abs/2311.10147
We forward model the difference in stellar age between post-coalescence mergers and a control sample with the same stellar mass, environmental density, and redshift. In particular, we use a pure sample of 445 post-coalescence mergers from the recent
Externí odkaz:
http://arxiv.org/abs/2310.11503
Autor:
Blakeslee, John P., Cantiello, Michele, Hudson, Michael J., Ferrarese, Laura, Hazra, Nandini, Jensen, Joseph B., Peng, Eric W., Raimondo, Gabriella
The extragalactic distance scale is fundamental to our understanding of astrophysics and cosmology. In recent years, the surface brightness fluctuation (SBF) method, applied in the near-IR, has proven especially powerful for measuring galaxy distance
Externí odkaz:
http://arxiv.org/abs/2306.15170
We forward-model mass-weighted stellar ages (MWAs) and quiescent fractions in projected phase space (PPS), using data from the Sloan Digital Sky Survey, to jointly constrain an infall quenching model for galaxies in $\log(M_{\mathrm{vir}}/\mathrm{M}_
Externí odkaz:
http://arxiv.org/abs/2211.09145
Autor:
Robison, Bailey, Hudson, Michael J., Cuillandre, Jean-Charles, Erben, Thomas, Fabbro, Sébastien, Gavazzi, Raphaël, Guinot, Axel, Gwyn, Stephen, Hildebrandt, Hendrik, Kilbinger, Martin, McConnachie, Alan, Miller, Lance, Spitzer, Isaac, van Waerbeke, Ludovic
Cold dark matter haloes are expected to be triaxial, and so appear elliptical in projection. We use weak gravitational lensing from the Canada-France Imaging Survey (CFIS) component of the Ultraviolet-Near Infrared Optical Northern Survey (UNIONS) to
Externí odkaz:
http://arxiv.org/abs/2209.09088
Autor:
Bickley, Robert W., Ellison, Sara L., Patton, David R., Bottrell, Connor, Gwyn, Stephen, Hudson, Michael J.
The importance of the post-merger epoch in galaxy evolution has been well-documented, but post-mergers are notoriously difficult to identify. While the features induced by mergers can sometimes be distinctive, they are frequently missed by visual ins
Externí odkaz:
http://arxiv.org/abs/2205.14103
Autor:
Ayçoberry, Emma, Ajani, Virginia, Guinot, Axel, Kilbinger, Martin, Pettorino, Valeria, Farrens, Samuel, Starck, Jean-Luc, Gavazzi, Raphaël, Hudson, Michael J.
Publikováno v:
A&A 671, A17 (2023)
UNIONS is an ongoing deep photometric multi-band survey of the Northern sky. As part of UNIONS, CFIS provides r-band data which we use to study weak-lensing peak counts for cosmological inference. We assess systematic effects for weak-lensing peak co
Externí odkaz:
http://arxiv.org/abs/2204.06280