Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Ivan Minchev"'
Publikováno v:
Mathematics, Vol 12, Iss 21, p 3355 (2024)
We consider certain fiber bundles over paraquaternionic contact manifolds, called twistor and reflector spaces. We show that the twistor space carries an integrable CR structure (Cauchy–Riemann structure) and the reflector space is an integrable pa
Externí odkaz:
https://doaj.org/article/a5ef05faf2a34a7bb3072a426c340db5
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 515:L34-L38
Recovering the birth radii of observed stars in the Milky Way is one of the ultimate goals of Galactic Archaeology. One method to infer the birth radius and the evolution of the interstellar medium (ISM) metallicity assumes a linear relation between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e505c61e62e03bd21488b9c268a603ff
https://doi.org/10.1093/mnrasl/slac065
https://doi.org/10.1093/mnrasl/slac065
Autor:
Bridget Ratcliffe, Ivan Minchev, Friedrich Anders, Sergey Khoperskov, Guillaume Guiglion, Tobias Buck, Katia Cunha, Anna Queiroz, Christian Nitschelm, Szabolcs Meszaros, Matthias Steinmetz, Roelof S de Jong, Samir Nepal, Richard R Lane, Jennifer Sobeck
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
Chemical abundances are an essential tool in untangling the Milky Way's enrichment history. However, the evolution of the interstellar medium abundance gradient with cosmic time is lost as a result of radial mixing processes. For the first time, we q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a62e4b607b13e518c2fa827c24e215be
https://doi.org/10.1093/mnras/stad1573
https://doi.org/10.1093/mnras/stad1573
Autor:
Natascha Sattler, Francesca Pinna, Nadine Neumayer, Jesus Falcón-Barroso, Marie Martig, Dimitri A Gadotti, Glenn van de Ven, Ivan Minchev
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2023, Vol.520(2), pp.3066-3079 [Peer Reviewed Journal]
We trace the evolution of the edge-on spiral galaxy NGC 3501, making use of its stellar populations extracted from deep integral-field spectroscopy MUSE observations. We present stellar kinematic and population maps, as well as the star formation his
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12d76400db049cd2528c37325542932c
http://dro.dur.ac.uk/38574/
http://dro.dur.ac.uk/38574/
Autor:
Bernd Husemann, Tomás Ruiz-Lara, Marie Martig, Glenn van de Ven, Justus Neumann, Jesús Falcón-Barroso, Ivan Minchev, F. Pinna, Dimitri A. Gadotti
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 508(2), 2458-2478. Oxford University Press
The existence of massive galaxies lacking a classical bulge has often been proposed as a challenge to $\Lambda$CDM. However, recent simulations propose that a fraction of massive disc galaxies might have had very quiescent merger histories, and also
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9197f085108a8beaaac8ec13fd2b4040
https://hdl.handle.net/11370/d32ee9ca-7171-450c-aab8-a584d8376934
https://hdl.handle.net/11370/d32ee9ca-7171-450c-aab8-a584d8376934
Autor:
Yuxi(Lucy) Lu, Ivan Minchev, Tobias Buck, Sergey Khoperskov, Matthias Steinmetz, Gabriele Cescutti, Kenneth Freeman
Stars move away from their birth places over time via a process known as radial migration, which blurs chemo-kinematic relations used for reconstructing the Milky Way formation history. One of the ultimate goals of Galactic Archaeology, therefore, is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2084f5b7d849f771eb7487cfe602dcba
https://doi.org/10.21203/rs.3.rs-2188219/v1
https://doi.org/10.21203/rs.3.rs-2188219/v1
Autor:
Roelof de Jong, Olga Bellido-Tirado, Joar . Brynnel, Aida Ezzati Amini, Steffen Frey, Christine Füßlein, Miklos Gäbler, Domenico Giannone, Diana Johl, Silke Kuba, Ulrike Lemke, Genoveva Micheva, Allar Saviauk, Matthias Steinmetz, Jakob C. Walcher, Roland Winkler, Karin Lind, Jonathan Loveday, Sofia Feltzing, Richard McMahon, Vincenzo Mainieri, Jean-François Pirard, Thomas Bensby, Maria Bergemann, Cristina Chiappini, Norbert Christlieb, Maria-Rosa Cioni, Johan Comparat, Simon Driver, Isobel Hook, Mike Irwin, Jean-Paul Kneib, Jochen Liske, Andrea Merloni, Ivan Minchev, Johan Richard, Else Starkenburg, Mark Sullivan, Clare Worley, Wolfgang Gaessler, Florance Laurent, Johan Pragt, Alban Remillieux, Florian Rothmaier, Scott Smedley, Ingo Stilz, Nicholas Walton, David M. Alexander, Ross Church, Scott Croom, Luke J. Davies, Caroline Heneka, Nikolay Kacharov, Jörg Knoche, Georges Kordopatis, Mirko Krumpe, Sarah Martell, Peder Norberg, Ingrid Pelisoli, Sanjib Sharma, Jesper Storm, Elmo Tempel
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy IX.
4MOST is a new high-multiplex, wide-field spectroscopic survey facility under construction for ESO's 4m-VISTA telescope at Paranal, Chile. Its key specifications are: a large field of view of 4.4 square degrees, a high multiplex fibre positioner base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df202403be9e044d2b4c4947f2a98912
https://doi.org/10.1117/12.2628965
https://doi.org/10.1117/12.2628965
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 501:5105-5120
Using simulated galaxies in their cosmological context, we analyse how the flaring of mono-age populations (MAPs) influences the flaring and the age structure of geometrically-defined thick discs. We also explore under which circumstances the geometr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2961ed7fc80155df81c79311cec7a1b8
https://doi.org/10.1093/mnras/staa3906
https://doi.org/10.1093/mnras/staa3906
Autor:
Jonathan Gagné, Alex R. Pettitt, Alice C. Quillen, Sukanya Chakrabarti, Ivan Minchev, Yifan Zhang
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:5623-5640
With backwards orbit integration we estimate birth locations of young stellar associations and moving groups identified in the solar neighborhood that are younger than 70 Myr. The birth locations of most of these stellar associations are at smaller g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28843ea5a048a223454d1d882da46627
https://doi.org/10.1093/mnras/staa3189
https://doi.org/10.1093/mnras/staa3189
Warps are observed in a large fraction of disc galaxies, and can be due to a large number of different processes. Some of these processes might also cause vertical heating and flaring. Using a sample of galaxies simulated in their cosmological contex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b1ee0886d16f9f3b89220ffa226380b
http://arxiv.org/abs/2111.01522
http://arxiv.org/abs/2111.01522