Results 31 to 40 of about 8,688,256 (155)

Milky Way

, 2009
The Milky Way is moving faster than before– It is likely to clash with other galaxies. In two billion years. Someone will have to go through that.
Ernesto Priego
core   +1 more source

Minimum-entropy Constraints on Galactic Potentials

The Astrophysical Journal
A tracer sample in a gravitational potential, starting from a generic initial condition, phase-mixes toward a stationary state. This evolution is accompanied by an entropy increase, and the final state is characterized by a distribution function (DF ...
Leandro Beraldo e Silva, Monica Valluri, Eugene Vasiliev, Kohei Hattori, Walter de Siqueira Pedra, Kathryne J. Daniel   +5 more
doaj   +1 more source

Stellar abundances in clusters: High-resolution, multi-object spectroscopy of globular & open clusters in the Milky Way [PDF]

, 2015
Talk on high-resolution, multi-object spectroscopy of globular & open clusters in the Milky ...
BRAGAGLIA, Angela
core  

An Inward-moving and Asymmetric Velocity Wave Detected in LAMOST-Gaia

The Astrophysical Journal Letters
The phase space, as coded by kinematic parameters and chemical abundances, is crucial for understanding the formation of the Galactic disk. Using red giant stars from the Galactic thin disk with [Fe/H] > − 0.8 and low- α ratios identified in LAMOST-Gaia,
Yuqin Chen, Gang Zhao, Wenbo Wu, Zixi Guo, Haopeng Zhang, Zhuohan Li   +5 more
doaj   +1 more source

Icarus Revisited: An Ancient, Metal-poor Accreted Stellar Stream in the Disk of the Milky Way

The Astrophysical Journal
The search for accreted satellites in the Galactic disk is a challenging task, to which Gaia plays a crucial role in synergy with ground-based spectroscopic surveys. In 2021, P. Re Fiorentin et al.
Paola Re Fiorentin, Alessandro Spagna, Mario G. Lattanzi, Michele Cignoni, Sara Vitali   +4 more
doaj   +1 more source

TRILEGAL, a TRIdimensional modeL of thE GALaxy: Status and FutureRed Giants as Probes of the Structure and Evolution of the Milky Way

, 2012
We briefly describe TRILEGAL, a TRIdimensional modeL of thE GALaxy, and its more recent developments. Particularly relevant is the recent inclusion of a kinematical module to the code, and the present efforts to provide a more solid calibration of Milky ...
Barbieri, Mauro, Groenewegen, Martin A. T., Santiago, Basílio X., da Costa, Luiz N., Bressan, Alessandro, Rocha Pinto, Helio J., Camargo, Julio I. B., Girardi, Léo, MARIGO, PAOLA   +8 more
core   +1 more source

Dynamical Models of the Milky Way in Action Space with LAMOST DR8 and Gaia EDR3

The Astrophysical Journal
This work explores dynamical models of the Milky Way (MW) by analyzing a sample of 86,109 K giant stars selected through cross-matching the LAMOST DR8 and Gaia EDR3 surveys. Our earlier torus models of Q. Wang et al.
Guang-Chen Sun, Qiao Wang, Shude Mao, Yichao Li, Richard J. Long, Ping-Jie Ding, Yougang Wang, Xin Zhang, Xuelei Chen   +8 more
doaj   +1 more source

AuriDESI: mock catalogues for the DESI Milky Way Survey [PDF]

The Dark Energy Spectroscopic Instrument Milky Way Survey (DESI MWS) will explore the assembly history of the Milky Way by characterizing remnants of ancient dwarf galaxy accretion events and improving constraints on the distribution of dark matter in ...
de la Macorra, Axel, Ahlen, Steven, Claybaugh, Todd, Meisner, Aaron, Koposov, Sergey E, Rezaie, Mehdi, Zhou, Zhimin, Manera, Marc, Grand, Robert J J, Kizhuprakkat, Namitha, Honscheid, Klaus, Cooper, Andrew P, Dawson, Kyle, Schubnell, Michael, Tarlé, Gregory, Brooks, David, Landriau, Martin, Allende Prieto, Carlos, Seo, Hee-Jong, Nie, Jundan, Rossi, Graziano, Valluri, Monica, Miquel, Ramon, Gaztañaga, Enrique, Gontcho A Gontcho, Satya, Frenk, Carlos, Prada, Francisco, Sanchez, Eusebio, Kehoe, Robert, Aguilar, Jessica Nicole, Gnedin, Oleg Y, Riley, Alexander H, Doel, Peter, Forero-Romero, Jaime E, de la Macorra, A, Riley, Alexander H., Grand, Robert J. J., Grand, RJJ, Gaztañaga, E, Cooper, AP, Zhou, Z, Forero-Romero, JE, Prada, F, Miquel, R, Claybaugh, T, Schubnell, M, Seo, HJ, Manera, M, Forero-Romero, Jaime E., Koposov, SE, Frenk, C, Gnedin, Oleg Y., Honscheid, K, Sanchez, E, Gnedin, OY, Landriau, M, Rezaie, M, Nie, J, Prieto, Carlos Allende, Kehoe, R, Prieto, CA, Cooper, Andrew P., Tarlé, G, Brooks, D, Doel, P, Gontcho, SGA, Kizhuprakkat, N, Meisner, A, Koposov, Sergey E., Dawson, K, Valluri, M, Ahlen, S, Gontcho, Satya Gontcho A, Rossi, G, Aguilar, JN, Riley, AH   +75 more
core   +1 more source

Orbital Torus Imaging: Acceleration, Density, and Dark Matter in the Galactic Disk Measured with Element Abundance Gradients

The Astrophysical Journal
Under the assumption of a simple and time-invariant gravitational potential, many Galactic dynamics techniques infer the milky Way’s mass and dark matter distributions from stellar kinematic observations.
Danny Horta, Adrian M. Price-Whelan, David W. Hogg, Kathryn V. Johnston, Lawrence Widrow, Julianne J. Dalcanton, Melissa K. Ness, Jason A. S. Hunt   +7 more
doaj   +1 more source

The Milky Way’s Rowdy Neighbors: The Effects of the Large Magellanic Cloud and Sagittarius Dwarf on the Milky Way Disk

The Astrophysical Journal
The Milky Way (MW) is a barred spiral galaxy shaped by tidal interactions with its satellites. The Large Magellanic Cloud (LMC) and the Sagittarius dwarf galaxy (Sgr) are the dominant influences at the present day. This paper presents a suite of four 10 ^
Ioana A. Stelea, Jason A. S. Hunt, Kathryn V. Johnston   +2 more
doaj   +1 more source