Zobrazeno 1 - 10
of 919
pro vyhledávání: '"Virial mass"'
Autor:
Lucas M. Valenzuela, Benjamin P. Moster, Rhea-Silvia Remus, Joseph A. O'Leary, Andreas Burkert
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 505:5815-5832
We present an empirical model for the number of globular clusters (GCs) in galaxies based on recent data showing a tight relationship between dark matter halo virial masses and GC numbers. While a simple base model forming GCs in low-mass haloes repr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba043a3b36937556526d544da16c35c1
https://doi.org/10.1093/mnras/stab1701
https://doi.org/10.1093/mnras/stab1701
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:4568-4582
We explore the potential of the kinetic Sunyaev-Zel'dovich (kSZ) effect as the cornerstone of a future observational probe for halo spin bias, the secondary dependence of halo clustering on halo spin at fixed halo mass. Using the IllustrisTNG magneto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e25b6b9786f216be2a92af1d44baddae
https://doi.org/10.1093/mnras/stab1026
https://doi.org/10.1093/mnras/stab1026
Publikováno v:
Astronomy Reports. 64:883-893
A comparison of the virial parameters of galaxies and galaxy clusters (radius, density, and entropy function) in a wide range of masses, $${{10}^{6}} \leqslant {{M}_{{{\text{vir}}}}}{\text{/}}{{M}_{ \odot }} \leqslant {{10}^{{14}}}$$ , shows that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::947ac911db642b5dfb48726cb4303ce8
https://doi.org/10.1134/s1063772920120045
https://doi.org/10.1134/s1063772920120045
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 497:3601-3622
Leo T is a gas-rich dwarf located at 414kpc $(1.4R_{\rm vir})$ distance from the Milky Way (MW) and it is currently assumed to be on its first approach. Here, we present an analysis of orbits calculated backward in time for the dwarf with our new cod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccc765e35034a5795dbb9698e6561c97
https://doi.org/10.1093/mnras/staa2153
https://doi.org/10.1093/mnras/staa2153
Publikováno v:
arXiv.org e-Print Archive
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society
We use Gaia DR2 systemic proper motions of 45 satellite galaxies to constrain the mass of the Milky Way using the scale free mass estimator of Watkins et al. (2010). We first determine the anisotropy parameter $\beta$, and the tracer satellites' radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::124a31fa693cdc1e3b1a513af99e40d2
https://doi.org/10.1093/mnras/staa1040
https://doi.org/10.1093/mnras/staa1040
Autor:
Isabel Santos-Santos, Azadeh Fattahi, Raphaël Errani, Alexandra Borukhovetskaya, Julio F. Navarro
Publikováno v:
Monthly notices of the Royal Astronomical Society, 2022, Vol.509(4), pp.5330-5339 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, ⟨10.1093/mnras/stab2912⟩
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, ⟨10.1093/mnras/stab2912⟩
The dark matter (DM) content of the Fornax dwarf spheroidal galaxy inferred from its kinematics is substantially lower than expected from LCDM cosmological simulations. We use N-body simulations to examine whether this may be the result of Galactic t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cddff6cf63d3439a7bf7bd53ebcc9c5
https://doi.org/10.1093/mnras/stab2912
https://doi.org/10.1093/mnras/stab2912
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Using hydrodynamical simulations, we study how well the underlying gravitational potential of a galaxy cluster can be modelled dynamically with different types of tracers. In order to segregate different systematics and the effects of varying estimat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da8ce1907ecf7bdad14a689b134c275a
http://arxiv.org/abs/2106.03011
http://arxiv.org/abs/2106.03011
Autor:
Ralf Hofmann, Janning Meinert
Publikováno v:
Universe, Vol 7, Iss 198, p 198 (2021)
Universe
Volume 7
Issue 6
Universe
Volume 7
Issue 6
Motivated by the SU(2)$_{\rm CMB}$ modification of the cosmological model $\Lambda$CDM, we consider isolated fuzzy-dark-matter lumps, made of ultralight axion particles whose masses arise due to distinct SU(2) Yang-Mills scales and the Planck mass $M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7206e7729c619d54cbf7a4cfeca0602b
http://arxiv.org/abs/2106.01457
http://arxiv.org/abs/2106.01457
Autor:
Akio K. Inoue, Hiroyuki Hirashita
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 487:961-974
The origin of dust in galaxy halos or in the circum-galactic medium (CGM) is still a mystery. We investigate if the radiation pressure in high-redshift ($z\sim 10$) galaxies can efficiently transport dust to halos. To clarify the first dust enrichmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ed70b622668d606b355bc9954bb9114
https://doi.org/10.1093/mnras/stz1348
https://doi.org/10.1093/mnras/stz1348
Autor:
Adi Nusser
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 484:510-519
It is demonstrated that the kinematics of the 10 star clusters in NGC2052-DF2 is compatible with a high dynamical mass close to those implied by the standard stellar-to-halo-mass ratio (SHMR). The analysis relies on a convenient form for the distribu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1e70bf39e6a9641430f98162d2cc2dc
https://doi.org/10.1093/mnras/sty3532
https://doi.org/10.1093/mnras/sty3532