Zobrazeno 1 - 10
of 189
pro vyhledávání: '"JUST, ANDREAS"'
Autor:
Ishchenko, Maryna, Kovaleva, Dana A., Berczik, Peter, Kharchenko, Nina V., Piskunov, Anatoly E., Polyachenko, Evgeny, Postnikova, Ekaterina, Just, Andreas, Borodina, Olga, Omarov, Chingis, Sobodar, Olexandr
In a previous paper using Gaia DR2 data, we demonstrated that the two closely situated open clusters Collinder 135 and UBC 7 might have formed together about 50 Myr ago. In this work, we performed star-by-star dynamical modelling of the evolution of
Externí odkaz:
http://arxiv.org/abs/2404.12255
Based on the astrometry and photometry in Gaia DR3, we identified new nearby white dwarfs and validated those that had been missed from recent white dwarf catalogues despite being previously documented. To ensure the reliability of their astrometric
Externí odkaz:
http://arxiv.org/abs/2312.11664
Publikováno v:
A&A 678, A11 (2023)
For a pair of supermassive black holes (SMBHs) in the remnant of a dual galaxy merger, well-known models exist to describe their dynamical evolution until the final coalescence accompanied by the emission of a low-frequency gravitational wave (GW) si
Externí odkaz:
http://arxiv.org/abs/2308.10894
Autor:
Just, Andreas, Piskunov, Anatoly E., Klos, Jonathan H., Kovaleva, Dana A., Polyachenko, Evgeny V.
Publikováno v:
A&A 672, A187 (2023)
We built Galactic open star cluster mass functions (CMFs) for different age sub-samples in the wider solar neighbourhood. We present a simple cluster formation and evolution model to reproduce the main features of the CMFs. We used an unbiased sample
Externí odkaz:
http://arxiv.org/abs/2302.10735
Publikováno v:
A&A 670, A19 (2023)
We present the compilation of the Fifth Catalogue of Nearby Stars (CNS5), based on astrometric and photometric data from Gaia EDR3 and Hipparcos, and supplemented with parallaxes from ground-based astrometric surveys carried out in the infrared. The
Externí odkaz:
http://arxiv.org/abs/2211.01449
Autor:
Geckeler, Ralf D.1 (AUTHOR) ralf.geckeler@ptb.de, Just, Andreas1 (AUTHOR), Krause, Michael1 (AUTHOR), Schnabel, Olaf2 (AUTHOR), Lacey, Ian3 (AUTHOR), English, Damon4 (AUTHOR), Yashchuk, Valeriy V.3 (AUTHOR)
Publikováno v:
Journal of Synchrotron Radiation. Jul2024, Vol. 31 Issue 4, p670-680. 11p.
Aims: We study the impact of Post-Newtonian correction terms on the energetic interaction between a gravitational wave (GW)-emitting supermassive black hole (SMBH) binary system and incoming stars via three-body scattering experiments. Methods: We us
Externí odkaz:
http://arxiv.org/abs/2109.08469
Publikováno v:
A&A 649, A41 (2021)
Aims: We investigate the orbital and phase space properties of loss cone stars that interact strongly with a hard, high-redshift binary supermassive black hole (SMBH) system formed in a cosmological scenario. Methods: We use a novel hybrid integratio
Externí odkaz:
http://arxiv.org/abs/2011.08216
Autor:
Kovaleva, Dana, Ishchenko, Marina, Postnikova, Ekaterina, Berczik, Peter, Piskunov, Anatoly E., Kharchenko, Nina V., Polyachenko, Evgeny, Reffert, Sabine, Sysoliatina, Kseniia, Just, Andreas
Publikováno v:
A&A 642, L4 (2020)
Given the closeness of the two open clusters Cr 135 and UBC 7 on the sky, we investigate the possibility of the two clusters to be physically related. We aim to recover the present-day stellar membership in the open clusters Collinder 135 and UBC 7 (
Externí odkaz:
http://arxiv.org/abs/2009.02223
Publikováno v:
A&A 636, A106 (2020)
We study the distribution of the Milky Way satellites stellar and dark matter debris. For the first time we address the question of the tidal disruption of satellites in simulations by utilising simultaneously a) a realistic set of orbits extracted f
Externí odkaz:
http://arxiv.org/abs/2003.09464