We test this prediction by studying the ratio of blue horizontal branch stars (BHB stars; more abundant in old, metal-poor populations) to main-sequence turn-off stars (MSTO stars; a feature of all populations) in the stellar halo of the Milky Way using data from the Sloan Digital Sky ...
the bar. To characterize the populations better, we further simulate several fields that have been surveyed in spectroscopy and for which a metallicity distribution function (MDF) are available. The model agrees well with these MDF measured along the minor axis if we assume that the main bar ...
stellar populations in the Milky Way (the bulge, thick disk, and halo system), spatial motions and chemicalabundances can reveal crucial information on the assembly history of the Galaxy, because these stars conserve the kinematic andchemical properties of the ancient Galactic building blocks and ...
IV.2 Pulsating red giant stars: Ensemble asteroseismology and Asteroseismology of stellar populations in the Milky way Asteroseismology of low-mass stars has provided us with a much more precise method for determining stellar global parameters than classical methods such as isochrone fitting (e.g. ...
T. et al. The origin of accreted stellar halo populations in the Milky Way using APOGEE, Gaia, and the EAGLE simulations. Mon. Not. R. Astron. Soc. 482, 3426–3442 (2019). Article ADS Google Scholar Di Matteo, P. et al. The Milky Way has no in-situ halo but it has a thick...
Stellar populations in the Galactic bulge of the Milky Way. Mon. Not. R. Astron. Soc. 430, 836–857 (2013). Article ADS CAS Google Scholar Edwards, S. et al. Forbidden line and H alpha profiles in T Tauri star spectra: a probe of anisotropic mass outflows and circumstellar disks....
led by Dr. Daniela Carollo, researcher of the Italian National Institute for Astrophysics, has revealed that the stars that make up the thick disk of the Milky Way belong to two distinct stellar populations with different characteristics and not to a single one, as has been thought for more ...
By means of idealized, dissipationless N-body simulations which follow the formation and subsequent buckling of a stellar bar, we study the characteristics of boxy/peanut-shaped bulges and compare them with the properties of the stellar populations in the Milky Way bulge. The main results of ...
Early-type dwarf galaxies (ETDs) are the end-points of the evolution of low-mass galaxies whose gas supplies have been extinguished. The cessation of star formation lays bare the ancient stellar populations. A wealth of information is stored in the colou
The question, whether the stellar populations in the Milky Way take part inflaring of the scale heights as observed for the HI gas is a matter of debate.Standard mass models for the Milky Way assume a constant scale height for eachof the different stellar distributions. However, there is mou...