Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Nadler, Ethan"'
We present $24$ cosmological dark matter (DM)--only zoom-in simulations of a Milky Way (MW) analog with initial conditions appropriate for scenarios where non-cold DM is a fraction of the total DM abundance (f-NCDM models), as the second installment
Externí odkaz:
http://arxiv.org/abs/2411.03431
Observations of the high-$z$ Universe from JWST have revealed a new population of bright, early galaxies. A robust statistical interpretation of this data requires fast forward models that account for uncertainties in galaxy evolution and incorporate
Externí odkaz:
http://arxiv.org/abs/2410.11680
We present $72$ cosmological dark matter (DM)--only N-body zoom-in simulations with initial conditions beyond cold, collisionless dark matter (CDM), as the first installment of the COZMIC suite. We simulate Milky Way (MW) analogs with linear matter p
Externí odkaz:
http://arxiv.org/abs/2410.03635
The GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Externí odkaz:
http://arxiv.org/abs/2409.19493
Autor:
Kado-Fong, Erin, Geha, Marla, Mao, Yao-Yuan, Reyes, Mithi A. C. de los, Wechsler, Risa H., Weiner, Benjamin, Asali, Yasmeen, Kallivayalil, Nitya, Nadler, Ethan O., Tollerud, Erik J., Wang, Yunchong
The redshift-dependent relation between galaxy stellar mass and star formation rate (the Star-Forming Sequence, or SFS) is a key observational yardstick for galaxy assembly. We use the SAGAbg-A sample of background galaxies from the Satellites Around
Externí odkaz:
http://arxiv.org/abs/2409.12221
Autor:
Wang, Yunchong, Mansfield, Philip, Nadler, Ethan O., Darragh-Ford, Elise, Wechsler, Risa H., Yang, Daneng, Yu, Hai-Bo
We investigate the impact of galactic disks on the tidal stripping of cold dark matter subhalos within Milky Way (MW)-mass halos ($M_{\rm vir}\sim 10^{12}\mathrm{M_{\odot}}$) using a new simulation suite, EDEN. By re-simulating 45 MW-mass zoom-in hal
Externí odkaz:
http://arxiv.org/abs/2408.01487
Interactions between dark matter (DM) and relativistic particles at early times suppress structure formation on small scales. In particular, the scattering process transfers heat and momentum from radiation to DM, ultimately reducing the abundance of
Externí odkaz:
http://arxiv.org/abs/2406.19458
We systemically evaluate the performance of the self-interacting dark matter (SIDM) halo model proposed in arXiv:2305.16176 with matched halos from high-resolution cosmological CDM and SIDM simulations. The model incorporates SIDM effects along mass
Externí odkaz:
http://arxiv.org/abs/2406.10753
Autor:
Wang, Yunchong, Nadler, Ethan O., Mao, Yao-Yuan, Wechsler, Risa H., Abel, Tom, Behroozi, Peter, Geha, Marla, Asali, Yasmeen, Reyes, Mithi A. C. de los, Kado-Fong, Erin, Kallivayalil, Nitya, Tollerud, Erik J., Weiner, Benjamin, Wu, John F.
Environment plays a critical role in shaping the assembly of low-mass galaxies. Here, we use the UniverseMachine (UM) galaxy-halo connection framework and the Data Release 3 of the Satellites Around Galactic Analogs (SAGA) Survey to place dwarf galax
Externí odkaz:
http://arxiv.org/abs/2404.14500
Autor:
Geha, Marla, Mao, Yao-Yuan, Wechsler, Risa H., Asali, Yasmeen, Kado-Fong, Erin, Kallivayalil, Nitya, Nadler, Ethan O., Tollerud, Erik J., Weiner, Benjamin, Reyes, Mithi A. C. de los, Wang, Yunchong, Wu, John F.
We present the star-forming properties of 378 satellite galaxies around 101 Milky Way analogs in the Satellites Around Galactic Analogs (SAGA) Survey, focusing on the environmental processes that suppress or quench star formation. In the SAGA stellar
Externí odkaz:
http://arxiv.org/abs/2404.14499