Results 91 to 100 of about 293 (162)

A Million Three-body Binaries Caught by Gaia

The Astrophysical Journal
Gaia observations have revealed over a million stellar binary candidates within ∼1 kpc of the Sun, predominantly characterized by orbital separations >10 ^3 au and eccentricities >0.7.
Dany Atallah, Yonadav Barry Ginat, Newlin C. Weatherford   +2 more
doaj   +1 more source

Improving Power Spectrum Estimation Using Multitapering: Efficient Asteroseismic Analyses for Understanding Stars, the Milky Way, and Beyond

The Astronomical Journal
Asteroseismic time series data have imprints of stellar oscillation modes, whose detection and characterization through time series analysis allows us to probe stellar interior physics.
Aarya A. Patil, Gwendolyn M. Eadie, Joshua S. Speagle, David J. Thomson   +3 more
doaj   +1 more source

Galactic Archaeology with [Mg/Mn] versus [Al/Fe] abundance ratios -- Uncertainties and caveats [PDF]

, 2023
A. Vasini, E. Spitoni, F. Matteuccí
openalex   +1 more source

Spectroscopic Ages for 4 Million Main-sequence Dwarf Stars from LAMOST DR10 Estimated with a Data-driven Approach

The Astrophysical Journal Supplement Series
Stellar age determination for large samples of stars opens new avenues for a broad range of astronomical sciences. While precise stellar ages for evolved stars have been derived from large ground- and space-based stellar surveys, reliable age ...
Jia-Hui Wang, Maosheng Xiang, Meng Zhang, Ji-Wei Xie, Jian Ge, Jinghua Zhang, Lanya Mou, Ji-Feng Liu   +7 more
doaj   +1 more source

NutMaat: A Python Package for Stellar Spectral Classification on the MK System

The Astronomical Journal
Stellar spectral classification according to the Morgan–Keenan (MK) system remains fundamental to astrophysical studies, yet modern surveys require automated, scalable tools.
R. I. El-Kholy, Z. M. Hayman
doaj   +1 more source

The GALAH Survey and Galactic Archaeology in the next decade [PDF]

, 2015
Sarah L. Martell
openalex   +1 more source

Galactic Archaeology Via Relics Of Nuclear Accretion Events

, 2016
F. Nicastro, F. Senatore, Y. Krongold, Martin Elvis, S. Mathur   +4 more
openalex   +2 more sources

Where are the most ancient stars in the Milky Way? [PDF]

Mon Not R Astron Soc, 2018
El-Badry K, Bland-Hawthorn J, Wetzel A, Quataert E, Weisz DR, Boylan-Kolchin M, Hopkins PF, Faucher-Giguère CA, Kereš D, Garrison-Kimmel S.   +9 more
europepmc   +1 more source

Potential impact of the Sagittarius dwarf galaxy on the formation of young O-rich stars. [PDF]

Nat Commun
Sun T, Bi S, Chen X, Chen Y, Lu YL, Liu C, Buck T, Zhang X, Li T, Li Y, Wu Y, Ge Z, Ye L.   +12 more
europepmc   +1 more source

The Spectral ANalog of Dwarfs (SAND): New Model Atmospheres with Varying Chemistry for Galactic Archaeology with Ultracool Dwarfs [PDF]

Efrain Alvarado, Roman Gerasimov, Adam J. Burgasser, Hunter Brooks, Christian Aganze, Christopher A. Theissen   +5 more
openalex   +1 more source