Results 11 to 20 of about 5,772,490 (206)

The Milky Way Stellar Halo Is Twisted and Doubly Broken: Insights from DESI DR2 Milky Way Survey Observation [PDF]

The Astrophysical Journal
Using K giants from the second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI) Milky Way Survey, we measure the shape, orientation, radial profile, and density anisotropies of the Milky Way (MW) stellar halo over 8 kpc < r _GC < 200
Songting Li, Wenting Wang, Sergey E. Koposov, João A. S. Amarante, Alis J. Deason, Nathan R. Sandford, Ting S. Li, Gustavo E. Medina, Jiaxin Han, Monica Valluri, Oleg Y. Gnedin, Namitha Kizhuprakkat, Andrew P. Cooper, Leandro Beraldo e Silva, Carlos Frenk, Raymond G. Carlberg, Mika Lambert, Tian Qiu, Jessica Nicole Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Axel de la Macorra, Peter Doel, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Dick Joyce, Robert Kehoe, Anthony Kremin, Claire Lamman, Martin Landriau, Laurent Le Guillou, Ramon Miquel, Will Percival, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Ray Sharples, Joseph Harry Silber, David Sprayberry, Gregory Tarlé, Benjamin Alan Weaver, Hu Zou   +47 more
doaj   +13 more sources

Using frequency maps to explore the distribution function of the Milky Way stellar halo

EPJ Web of Conferences, 2012
Resolved surveys of the Milky Way's stellar halo can obtain all 6 phase space coordinates of tens of thousands of individual stars, making it possible to compute their 3-dimensional orbits.
Valluri M.
doaj   +2 more sources

The puzzling assembly of the Milky Way halo – contributions from dwarf Spheroidals and globular clusters

EPJ Web of Conferences, 2012
While recent sky surveys have uncovered large numbers of ever fainter Milky Way satellites, their classification as star clusters, low-luminosity galaxies, or tidal overdensities remains often unclear. Likewise, their contributions to the build-up of the
Lépine S., Koch A., Çalışkan Ş.
doaj   +4 more sources

Galaxy masses [PDF]

, 2014
Galaxy masses play a fundamental role in our understanding of structure formation models. This review addresses the variety and reliability of mass estimators that pertain to stars, gas, and dark matter.
Courteau, Stephane, Cappellari, Michele, Hoekstra, Henk, Treu, Tommaso, Widrow, Lawrence M., Emsellem, Eric, Maraston, Claudia, Koopmans, L. V. E., Dutton, Aaron A., Mamon, Gary A., de Jong, Roelof S.   +10 more
core   +1 more source

Unveiling the mass assembly history of the Milky Way via its stellar halo

, 2022
Stars comprising the Milky Way's stellar halo safeguard important chemo-dynamical information that enables the reconstruction of the mass assembly history of the Galaxy.
Horta, Danny
core   +1 more source

Observational Constraints on Milky Way Halo Formation

, 2020
The formation of the Milky Way stellar halo is explored through the application of large-scale astronomical sky surveys. Multiple techniques are developed to identify and characterize metal-poor stars. Implications of the chemical abundance, spatial, and
Devin Whitten (17547927)
core   +1 more source

PHASE-SPACE CORRELATION IN STELLAR STREAMS OF THE MILKY WAY HALO: THE CLASH OF KSHIR AND AND GD-1 [PDF]

, 2019
International audienceWe report the discovery of a 70 • long stellar stream in the Milky Way halo, which criss-crosses the well known "GD-1" stream. We show that this new stellar structure ("Kshir") and GD-1 lie at similar distance, and are remarkably ...
Malhan, Khyati, Famaey, Benoit, Martin, Nicolas F., Carlberg, Raymond G., Martin, Nicolas, Ibata, Rodrigo, A, Ibata, Rodrigo A., Carlberg, Raymond, G, Malhan, Khyati,, Bellazzini, Michele   +9 more
core   +1 more source

Modelling the Milky Way stellar halo [PDF]

, 2016
We motivate the importance of understanding the kinematics and dynamics of the Milky Way stellar halo both in unravelling the formation history and evolution of our host Galaxy and in the more general context of galaxy dynamics.

core   +1 more source

The accretion origin of the Milky Way's stellar halo [PDF]

, 2008
We have used data from the Sloan Digital Sky Survey (SDSS) Data Release 5 to explore the overall structure and substructure of the stellar halo of the Milky Way using ~4 million color-selected main-sequence turnoff stars with 0 ...
Belokurov, Vasily, Bell, Eric F., Johnston, Kathryn V., Ivezic, Zeljko, Jong, Jelte T. A. de, Schneider, Donald P., Koposov, Sergey E.; id_orcid, Hogg, David W., Grebel, Eva K., Rix, Hans-Walter, Evans, N. W., Jahnke, Knud, Sharma, Sanjib, Zolotov, Adi, Bullock, James S., Beers, Timothy C., Steinmetz, Matthias, Zucker, Daniel B.   +17 more
core   +1 more source

The Milky Way's Inner Halo: Stellar Halo & Dark Matter Halo

, 2019
This presentation reviews the dynamical properties and origin of the stellar halo, and the distribution of dark matter in the inner Milky Way.
Gerhard, Ortwin, Gerhard, Ortwin (8182614)   +1 more
core   +1 more source