Results 81 to 90 of about 5,332 (183)

Galactic archaeology through the lens of asteroseismology

, 2023
Presentation given at the conference Bulge40: "The Galactic bulge and beyond: A conference in honor of Mike Rich", 18-22 September 2023, Elba Island (Italy)
openaire   +2 more sources

The Age of the Milky Way Inner Halo

, 2012
The Milky Way galaxy is observed to have multiple components with distinct properties, such as the bulge, disk, and halo. Unraveling the assembly history of these populations provides a powerful test to the theory of galaxy formation and evolution, but ...
A Dotter, A Dotter, A Dotter, A Renzini, A Sarajedini, A Zolotov, AS Font, B Paczyński, BR Oppenheimer, D Carollo, DR Soderblom, E Gates, E-M Pauli, G Wegner, Jason S. Kalirai, JS Kalirai, JS Kalirai, JS Kalirai, JS Kalirai, LR Bedin, M Kilic, P Bergeron, P Jofré, P-E Tremblay, P-E Tremblay, R Napiwotzki, S Moehler, SL Shapiro, TC Beers   +28 more
core   +1 more source

[X/Fe] Marks the Spot: Mapping Chemical Azimuthal Variations in the Galactic Disk with APOGEE

The Astrophysical Journal
Chemical cartography of the Galactic disk provides insights into its structure and assembly history over cosmic time. In this work, we use chemical cartography to explore chemical gradients and azimuthal substructure in the Milky Way disk with giant ...
Zoe Hackshaw, Keith Hawkins, Carrie Filion, Danny Horta, Chervin F. P. Laporte, Christopher Carr, Adrian M. Price-Whelan   +6 more
doaj   +1 more source

Stellar age determination using deep neural networks

Astronomy & Astrophysics
Context. Recent spectroscopic surveys provide element abundances for large samples of Milky Way stars, from which stellar parameters can be inferred.
Boin T., Casamiquela L., Haywood M., Di Matteo P., Lebreton Y., Uddin M., Reese D. R.   +6 more
doaj   +1 more source

The First Galaxies

, 2011
We review our current understanding of how the first galaxies formed at the end of the cosmic dark ages, a few 100 million years after the Big Bang. Modern large telescopes discovered galaxies at redshifts greater than seven, whereas theoretical studies ...
Naoki Yoshida, Volker Bromm, Whalen D
core   +1 more source

Cosmological Simulations of Stellar Halos with Gaia Sausage–Enceladus Analogs: Two Sausages, One Bun?

The Astrophysical Journal
Observations of the Milky Way’s stellar halo find that it is predominantly comprised of a radially biased population of stars, dubbed the Gaia Sausage–Enceladus, or GSE.
Dylan Folsom, Mariangela Lisanti, Lina Necib, Danny Horta, Mark Vogelsberger, Lars Hernquist   +5 more
doaj   +1 more source

Dynamical Origins of Azimuthal Metallicity Variations in the Galactic Disk: Insights from Kinematic Ridges with Gaia

The Astrophysical Journal
Kinematic and spectroscopic studies in the past few years have revealed coherent azimuthal metallicity variations across the disk of the Milky Way (MW) that may be the result of dynamical process associated with nonaxisymmetric features of the Galaxy. At
Carlos Jurado, Keith Hawkins, Jason A. S. Hunt, Zoe Hackshaw, Carrie Filion, Neige Frankel, Christopher Carr   +6 more
doaj   +1 more source

The impact of red-giant asteroseismology on Galactic Archaeology

, 2023
Talk at PLATO stellar science meeting, Milazzo ...
openaire   +2 more sources

Tracing Back a Second-generation Star Stripped from Terzan 5 by the Galactic Bar

The Astrophysical Journal Letters
The Galactic bulge hosts the Milky Way’s oldest stars, possibly coming from disrupted globular clusters (GCs) or the bulge’s primordial building blocks, making these stars witnesses to the Galaxy’s early chemical enrichment.
Stefano O. Souza, Marica Valentini, Cristina Chiappini, Angeles Pérez-Villegas, Josefina Montalbán, Diego Bossini, Beatriz Barbuy, Yvonne Elsworth, Rafael A. Garcia   +8 more
doaj   +1 more source

Remote sensing archaeology: The next century. [PDF]

Innovation (Camb), 2022
Luo L, Wang X, Guo H.
europepmc   +1 more source