Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Vasily Belokurov"'
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L4 (2024)
We search for globular clusters (GCs) trapped in resonances with the bar of the Milky Way (MW). 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
Externí odkaz:
https://doaj.org/article/f9ff194c19d04f3e981f4a87a32cd195
Autor:
Keith Hawkins, Adrian M. Price-Whelan, Allyson A. Sheffield, Aidan Z. Subrahimovic, Rachael L. Beaton, Vasily Belokurov, Denis Erkal, Sergey E. Koposov, Richard R. Lane, Chervin F. P. Laporte, Christian Nitschelm
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 123 (2023)
Stellar streams in the Galactic halo are useful probes of the assembly of galaxies like the Milky Way. Many tidal stellar streams that have been found in recent years are accompanied by a known progenitor globular cluster or dwarf galaxy. However, th
Externí odkaz:
https://doaj.org/article/fdfb04d66cc2469c94ac90d8a7477c3c
Autor:
Andrew P. Cooper, Sergey E. Koposov, Carlos Allende Prieto, Christopher J. Manser, Namitha Kizhuprakkat, Adam D. Myers, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Constance Rockosi, Monica Valluri, Joan Najita, Alis Deason, Anand Raichoor, M.-Y. Wang, Y.-S. Ting, Bokyoung Kim, Andreia Carrillo, Wenting Wang, Leandro Beraldo e Silva, Jiwon Jesse Han, Jiani Ding, Miguel Sánchez-Conde, Jessica N. Aguilar, Steven Ahlen, Stephen Bailey, Vasily Belokurov, David Brooks, Katia Cunha, Kyle Dawson, Axel de la Macorra, Peter Doel, Daniel J. Eisenstein, Parker Fagrelius, Kevin Fanning, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Julien Guy, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Michael E. Levi, Paul Martini, Aaron M. Meisner, Ramon Miquel, John Moustakas, Jundan J. D. Nie, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Nabeel Rehemtulla, Edward Schlafly, David Schlegel, Michael Schubnell, Ray M. Sharples, Gregory Tarlé, Risa H. Wechsler, David H. Weinberg, Zhimin Zhou, Hu Zou
Publikováno v:
The Astrophysical Journal, Vol 947, Iss 1, p 37 (2023)
We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak National Observatory. Over the next 5 yr DESI MWS will observe approximately seven millio
Externí odkaz:
https://doaj.org/article/114f8abfb25849edb4e48c0473273b33
Autor:
Peter McGill, Jay Anderson, Stefano Casertano, Kailash C Sahu, Pierre Bergeron, Simon Blouin, Patrick Dufour, Leigh C Smith, N Wyn Evans, Vasily Belokurov, Richard L Smart, Andrea Bellini, Annalisa Calamida, Martin Dominik, Noé Kains, Jonas Klüter, Martin Bo Nielsen, Joachim Wambsganss
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 520:259-280
In November 2019, the nearby single, isolated DQ-type white dwarf LAWD 37 (WD 1142-645) aligned closely with a distant background source and caused an astrometric microlensing event. Leveraging astrometry from \Gaia{} and followup data from the \text
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 516:3661-3684
We show how astrometric and spectroscopic errors introduced by an unresolved binary system can be combined to give estimates of the binary period and mass ratio. This can be performed analytically if we assume we see one or more full orbits over our
Autor:
Callum E C Witten, David S Aguado, Jason L Sanders, Vasily Belokurov, N Wyn Evans, Sergey E Koposov, Carlos Allende Prieto, Francesca De Angeli, Mike J Irwin
Publikováno v:
Witten, C E C, Aguado, D S, Sanders, J L, Belokurov, V, Evans, N W, Koposov, S E, Prieto, C A, Angeli, F D & Irwin, M J 2022, ' Information content of BP/RP spectra in Gaia DR3 ', Monthly Notices of the Royal Astronomical Society, vol. 516, no. 3, pp. 3254-3265 . https://doi.org/10.1093/mnras/stac2273
Gaia Data Release 3 has provided the astronomical community with the largest stellar spectroscopic survey to date ($>$ 220 million sources). The low resolution (R$\sim$50) blue photometer (BP) and red photometer (RP) spectra will allow for the estima
Autor:
Vasily Belokurov, N. Wyn Evans
Publikováno v:
Nature Astronomy. 6:911-922
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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Using the ARTEMIS set of 45 high-resolution cosmological simulations, we investigate a range of merger-induced dynamical transformations of Milky Way-like galaxies. We first identify populations of accreted stars on highly radial orbits, similar to t
Autor:
Vasily Belokurov, Eugene Vasiliev, Alis J Deason, Sergey E Koposov, Azadeh Fattahi, Adam M Dillamore, Elliot Y Davies, Robert J J Grand
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2023, Vol.518(4), pp.6200-6215 [Peer Reviewed Journal]
Belokurov, V, Vasiliev, E, Deason, A J, Koposov, S E, Fattahi, A, Dillamore, A M, Davies, E Y & Grand, R J J 2023, ' Energy wrinkles and phase-space folds of the last major merger ', Monthly Notices of the Royal Astronomical Society, vol. 518, no. 4, pp. 6200-6215 . https://doi.org/10.1093/mnras/stac3436
Belokurov, V, Vasiliev, E, Deason, A J, Koposov, S E, Fattahi, A, Dillamore, A M, Davies, E Y & Grand, R J J 2023, ' Energy wrinkles and phase-space folds of the last major merger ', Monthly Notices of the Royal Astronomical Society, vol. 518, no. 4, pp. 6200-6215 . https://doi.org/10.1093/mnras/stac3436
Relying on the dramatic increase in the number of stars with full 6D phase-space information provided by the Gaia Data Release 3, we discover unambiguous signatures of phase-mixing in the stellar halo around the Sun. We show that for the stars likely
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::293b526458db8422226e6f1f92871d63
https://doi.org/10.1093/mnras/stac3436
https://doi.org/10.1093/mnras/stac3436
In a galaxy merger, the stars tidally stripped from the satellite and accreted onto the host galaxy undergo phase mixing and form finely-grained structures in the phase space. However, these fragile structures may be destroyed in the subsequent galax
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78c932763367dbfe06863776b86677e2