2601.14562
2026-06-18
astro-ph.GA
版本更新
80%
Signatures of a Tidally Induced Spiral Arm at the Anticenter of the Milky Way and a Kinematically Extended Anticenter Stream Using DESI DR2
利用DESI DR2在银河系反中心发现潮汐诱导旋臂及运动学延展的反中心流的信号
Mika Lambert, Constance M. Rockosi, Sergey E. Koposov, Ting S. Li, Monica Valluri, Leandro Beraldo e Silva, Songting Li, Joaõ A. S. Amarante, Amanda Byström, Gustavo E. Medina, Nathan R. Sandford, Joan Najita, Namitha Kizhuprakkat, Jessica N. Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Kyle Dawson, Axel de la Macorra, Peter Doel, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Dick Joyce, Anthony Kremin, Claire Lamman, Martin Landriau, Laurent Le Guillou, Marc Manera, Aaron Meisner, Ramon Miquel, John Moustakas, Adam Myers, Seshadri Nadathur, Will Percival, Francisco Prada, Ignasi Perez-Rafols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Michael Schubnell, Joseph H. Silber, David Sprayberry, Gregory Tarle, Benjamin A. Weaver, Rongpu Zhou, Hu Zou
专题命中
医学影像
:MRI(summary_cn,abstract)
AI总结
基于DESI MWS数据,分析61883颗主序转折星,发现麒麟座环(MRi)的运动学特征与潮汐诱导旋臂一致,并计算了人马座矮椭球星系最近两次通过时间;确认反中心流(ACS)在运动学上与MRi解耦,且其运动学特征更广泛分布。