Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Lina Necib"'
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 70 (2024)
The escape velocity profile of the Milky Way offers a crucial and independent measurement of its underlying mass distribution and dark matter (DM) properties. Using a sample of stars from the third data release of Gaia with 6D kinematics and strict q
Externí odkaz:
https://doaj.org/article/20f595b7cc4e443abd04fdf9094d63ad
Autor:
Xuejian Shen, Philip F. Hopkins, Lina Necib, Fangzhou Jiang, Michael Boylan-Kolchin, Andrew Wetzel
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 131 (2024)
We analyze the first cosmological baryonic zoom-in simulations of galaxies in dissipative self-interacting dark matter (dSIDM). The simulations utilize the FIRE-2 galaxy formation physics with the inclusion of dissipative dark matter self-interaction
Externí odkaz:
https://doaj.org/article/6871cd81a7914992a63ae676e01700ee
Autor:
Tri Nguyen, Xiaowei Ou, Nondh Panithanpaisal, Nora Shipp, Lina Necib, Robyn Sanderson, Andrew Wetzel
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 108 (2024)
The third data release (DR3) of Gaia has provided a fivefold increase in the number of radial velocity measurements of stars, as well as a stark improvement in parallax and proper motion measurements. To help with studies that seek to test models and
Externí odkaz:
https://doaj.org/article/ec7b2988a3584d3aa226d8c6fbce1ec9
Autor:
Xiaowei Ou, Anirudh Chiti, Nora Shipp, Joshua D. Simon, Marla Geha, Anna Frebel, Mohammad K. Mardini, Denis Erkal, Lina Necib
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 33 (2024)
The Hercules ultrafaint dwarf galaxy (UFD) has long been hypothesized to be tidally disrupting, yet no conclusive evidence has been found for tidal disruption owing partly to difficulties in identifying Hercules member stars. In this work, we present
Externí odkaz:
https://doaj.org/article/d4e2e864b159417682b591e106f2821c
Autor:
Shuyu Wang, Lina Necib, Alexander P. Ji, Xiaowei Ou, Mariangela Lisanti, Mithi A. C. de los Reyes, Allison L. Strom, Mimi Truong
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 129 (2023)
Nyx is a nearby, prograde, and high-eccentricity stellar stream physically contained in the thick disk, but its origin is unknown. Nyx could be the remnant of a disrupted dwarf galaxy, in which case the associated dark matter substructure could affec
Externí odkaz:
https://doaj.org/article/6ef194f6bf0b4467af04ca25654d274f
Autor:
Nora Shipp, Nondh Panithanpaisal, Lina Necib, Robyn Sanderson, Denis Erkal, Ting S. Li, Isaiah B. Santistevan, Andrew Wetzel, Lara R. Cullinane, Alexander P. Ji, Sergey E. Koposov, Kyler Kuehn, Geraint F. Lewis, Andrew B. Pace, Daniel B. Zucker, Joss Bland-Hawthorn, Emily C. Cunningham, Stacy Y. Kim, Sophia Lilleengen, Jorge Moreno, Sanjib Sharma, S Collaboration & FIRE Collaboration
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 44 (2023)
We present the first detailed comparison of populations of dwarf galaxy stellar streams in cosmological simulations and the Milky Way. In particular, we compare streams identified around 13 Milky Way analogs in the FIRE-2 simulations to streams obser
Externí odkaz:
https://doaj.org/article/115a7d1e312e40538e7b8b7eeb754780
Autor:
Danny Horta, Emily C. Cunningham, Robyn E. Sanderson, Kathryn V. Johnston, Nondh Panithanpaisal, Arpit Arora, Lina Necib, Andrew Wetzel, Jeremy Bailin, Claude-André Faucher-Giguère
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 158 (2023)
In the Λ-Cold Dark Matter model of the universe, galaxies form in part through accreting satellite systems. Previous works have built an understanding of the signatures of these processes contained within galactic stellar halos. This work revisits t
Externí odkaz:
https://doaj.org/article/c06db9bff245475796a2fae6c8e7fd16
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 6, Pp 1-34 (2018)
Abstract We introduce a new jet substructure technique called Recursive Soft Drop, which generalizes the Soft Drop algorithm to have multiple grooming layers. Like the original Soft Drop method, this new recursive variant traverses a jet clustering t
Externí odkaz:
https://doaj.org/article/3e058456be67454d96d1b0e8d22a6668
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:2623-2648
We apply the clustering algorithm HDBSCAN on the Gaia early third data release astrometry combined with the Gaia second data release radial velocity measurements of almost 5.5 million stars to identify the local stellar kinematic substructures in the
Autor:
Philip F Hopkins, Andrew Wetzel, Coral Wheeler, Robyn Sanderson, Michael Y Grudić, Omid Sameie, Michael Boylan-Kolchin, Matthew Orr, Xiangcheng Ma, Claude-André Faucher-Giguère, Dušan Kereš, Eliot Quataert, Kung-Yi Su, Jorge Moreno, Robert Feldmann, James S Bullock, Sarah R Loebman, Daniel Anglés-Alcázar, Jonathan Stern, Lina Necib, Caleb R Choban, Christopher C Hayward
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 519:3154-3181
Increasingly, uncertainties in predictions from galaxy formation simulations (at sub-Milky Way masses) are dominated by uncertainties in stellar evolution inputs. In this paper, we present the full set of updates from the FIRE-2 version of the Feedba