Zobrazeno 1 - 10
of 589
pro vyhledávání: '"Belokurov, Vasily"'
We take low-amplitude, long period variable (LA-LPV) candidates in Gaia DR3 as tracers of the kinematics and dynamics of the Milky Way bar. LA-LPVs, like other LPVs, have high luminosities and follow a tight period-luminosity relation, but unlike e.g
Externí odkaz:
http://arxiv.org/abs/2406.06678
We search for globular clusters (GCs) trapped in resonances with the bar of the Milky Way. By integrating their orbits in a potential with a decelerating bar, we select 10 whose orbits are significantly changed by its presence. Most of these are trap
Externí odkaz:
http://arxiv.org/abs/2405.14933
The study of binary stars in the Galactic halo provides crucial insights into the dynamical history and formation processes of the Milky Way. In this work, we aim to investigate the binary fraction in a sample of accreted and in-situ halo stars, focu
Externí odkaz:
http://arxiv.org/abs/2405.12335
Autor:
Monty, Stephanie, Belokurov, Vasily, Sanders, Jason L., Hansen, Terese T., Sakari, Charli M., McKenzie, Madeleine, Myeong, GyuChul, Davies, Ellot Y., Ardern-Arentsen, Anke, Massari, Davide
We combine stellar orbits with the abundances of the heavy, $r$-process element europium and the light, $\alpha$-element, silicon to separate in-situ and accreted populations in the Milky Way across all metallicities. At high orbital energy, the accr
Externí odkaz:
http://arxiv.org/abs/2405.08963
Autor:
Kravtsov, Andrey, Belokurov, Vasily
We use a well-motivated galaxy formation framework to predict stellar masses, star formation rates (SFR), and ultraviolet (UV) luminosities of galaxy populations at redshifts $z\in 5-16$, taking into account stochasticity of SFR in a controlled manne
Externí odkaz:
http://arxiv.org/abs/2405.04578
Autor:
Castro-Ginard, Alfred, Penoyre, Zephyr, Casey, Andrew R., Brown, Anthony G. A., Belokurov, Vasily, Cantat-Gaudin, Tristan, Drimmel, Ronald, Fouesneau, Morgan, Khanna, Shourya, Kurbatov, Evgeny P., Price-Whelan, Adrian M., Rix, Hans-Walter, Smart, Richard L.
Gaia can not individually resolve very close binary systems, however, the collected data can still be used to identify them. A powerful indicator of stellar multiplicity is the sources reported Renormalized Unit Weight Error (ruwe), which effectively
Externí odkaz:
http://arxiv.org/abs/2404.14127
Overdensities in the radial phase space $(r,v_r)$ of the Milky Way's halo have previously been associated with the phase-mixed debris of a highly radial merger event, such as Gaia Sausage-Enceladus. We present and test an alternative theory in which
Externí odkaz:
http://arxiv.org/abs/2402.14907
Autor:
Deason, Alis J., Belokurov, Vasily
The Gaia mission has revolutionized our view of the Milky Way and its satellite citizens. The field of Galactic Archaeology has been piecing together the formation and evolution of the Galaxy for decades, and we have made great strides, with often li
Externí odkaz:
http://arxiv.org/abs/2402.12443
Autor:
Cantat-Gaudin, Tristan, Fouesneau, Morgan, Rix, Hans-Walter, Brown, Anthony G. A., Drimmel, Ronald, Castro-Ginard, Alfred, Khanna, Shourya, Belokurov, Vasily, Casey, Andrew R.
The spatial distribution of Galactic stars with different chemical abundances encodes information on the processes that drove the formation and evolution of the Milky Way. Survey selection functions are indispensable for analysing astronomical catalo
Externí odkaz:
http://arxiv.org/abs/2401.05023
Autor:
Usman, Sam A., Ji, Alexander P., Li, Ting S., Pace, Andrew B., Cullinane, Lara R., Da Costa, Gary S., Koposov, Sergey E., Lewis, Geraint F., Zucker, Daniel B., Belokurov, Vasily, Bland-Hawthorn, Joss, Ferguson, Peter S., Hansen, Terese T., Limberg, Guilherme, Martell, Sarah L., McKenzie, Madeleine, Simon, Joshua D.
Milky Way globular clusters (GCs) display chemical enrichment in a phenomenon called multiple stellar populations (MSPs). While the enrichment mechanism is not fully understood, there is a correlation between a cluster's mass and the fraction of enri
Externí odkaz:
http://arxiv.org/abs/2401.02476