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Disentangling the Distant Stellar Halo Using K Giants in DESI Year 3 Data

We present a sample of 88,959 K giants from Dark Energy Spectroscopic Instrument Milky Way Survey Year 3 data, which we use to characterize the chemo-dynamical properties of the stellar halo at Galactocentric distances of 12 to ∼100 kpc. Using HDBSCAN , we identify five prominent stellar halo substr...

Deskribapen osoa

Gorde:
Egile Nagusiak: Namitha Kizhuprakkat, Andrew P. Cooper, Wenting Wang, Amanda Byström, Joan Najita, Sergey E. Koposov, Guillaume Thomas, Songting Li, Ruizhi Zhang, Carlos Allende Prieto, Mika Lambert, Oleg Y. Gnedin, Alexander H. Riley, Jessica N. Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Axel de la Macorra, Peter Doel, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Dick Joyce, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Laurent Le Guillou, Marc Manera, Aaron Meisner, Ramon Miquel, Will Percival, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Michael Schubnell, Ray Sharples, Joseph H. Silber, David Sprayberry, Gregory Tarlé, Benjamin A. Weaver, Hu Zou
Formatua: Artigo
Hizkuntza:Inglês
Argitaratua: IOP Publishing 2026-01-01
Saila:The Astrophysical Journal
Gaiak:
Milky Way Galaxy
Milky Way stellar halo
Milky Way dynamics
Milky Way evolution
Galaxy structure
K giant stars
Sarrera elektronikoa:https://doi.org/10.3847/1538-4357/ae7f15
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