Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Peeter Tenjes"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:1080-1092
A galaxy moving through a background of dark matter particles induces an overdensity of these particles or a wake behind it. The back reaction of this wake on the galaxy is a force field that can be decomposed into an effective deceleration (called d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5f9c13cecc97ed273f398f31eeef7b9
https://doi.org/10.1093/mnras/staa2486
https://doi.org/10.1093/mnras/staa2486
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 494(3), 3358-3367. Oxford University Press
We determine the mass of the Milky Way bar and the torque it causes, using Gaia DR2, by applying the orbital arc method. Based on this, we have found that the gravitational acceleration is not directed towards the centre of our Galaxy but a few degre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51dc66d85d86df180f0e230da13d9403
https://research.rug.nl/en/publications/11430f27-dd31-4d41-be05-3e02b9ff6aec
https://research.rug.nl/en/publications/11430f27-dd31-4d41-be05-3e02b9ff6aec
Autor:
Maret Einasto, Peeter Tenjes, Mirt Gramann, Heidi Lietzen, Rain Kipper, Lauri Juhan Liivamägi, Elmo Tempel, Shishir Sankhyayan, Jaan Einasto
High-density cores (HDCs) of galaxy superclusters that embed rich clusters and groups of galaxies are the earliest large objects to form in the cosmic web, and the largest objects that may collapse in the present or future. We study the dynamical sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a66ebcb1ebc3394326c62dbb6a10fb02
Our aim is to understand the effect of environment to galaxy quenching in various local and global environments. We focus on galaxies with very old stellar populations (VO galaxies), typically found in the centers of clusters and groups, and search f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5368a969136218364736dbcdbc250ba7
Autor:
Pekka Heinämäki, Elmo Tempel, T. Tuvikene, M. Einasto, Lauri Juhan Liivamägi, H. Lietzen, Jaan Einasto, Boris Deshev, Peeter Tenjes, G. Chon
We study the properties, connectivity, and galaxy content of groups and filaments in the low-density region (cocoon) around A2142 supercluster (SClA2142). We traced the SClA2142 cocoon boundaries by the lowest luminosity-density regions that separate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad0b7ab5d545fb75b5a8875219987e22
http://arxiv.org/abs/2007.04910
http://arxiv.org/abs/2007.04910
A method to calculate gravitational accelerations within discrete localized regions in the Milky Way
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 482:1724-1732
We present a method to calculate gravitational potential gradients within regions containing few tens of thousands stars with known phase space coordinates. The central idea of the method is to calculate orbital arcs for each star within a given regi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0399ea1632366de820f97e847cdfd21e
https://doi.org/10.1093/mnras/sty2598
https://doi.org/10.1093/mnras/sty2598
We study the effect of dynamical friction on globular clusters and on the stars evaporated from the globular clusters (stellar streams) moving in a galactic halo. Due to dynamical friction, the position of a globular cluster (GC) as a stream progenit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44cb06ed9a2dbca98c2c296d859a0485
http://arxiv.org/abs/1905.05553
http://arxiv.org/abs/1905.05553
Autor:
Peeter Tenjes, Pekka Heinämäki, Heidi Lietzen, Rain Kipper, Jaan Einasto, Lauri Juhan Liivamägi, Pasi Nurmi, Antti Tamm, Elmo Tempel, Maret Einasto
Publikováno v:
Astronomy & Astrophysics. 649:A51
We present a study of the Corona Borealis (CB) supercluster. We determined the high-density cores of the CB and the richest galaxy clusters in them, and studied their dynamical state and galaxy content. We determined filaments in the supercluster to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::338fd68ffbad7c10c819a3156ef3706d
https://doi.org/10.1051/0004-6361/202040200
https://doi.org/10.1051/0004-6361/202040200
Publikováno v:
Astronomy & Astrophysics. 600:A34
Aims: Density waves are often considered as the triggering mechanism of star formation in spiral galaxies. Our aim is to study relations between different star formation tracers (stellar UV and near-IR radiation and emission from HI, CO and cold dust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbcbff7d4eba7456ab21a7bf38f64e6c
https://doi.org/10.1051/0004-6361/201629991
https://doi.org/10.1051/0004-6361/201629991
Publikováno v:
Astronomy & Astrophysics. 369:530-536
Using the recently determined spatial velocity components of the extreme runaway star HIP 60350 and a gravitation potential model of the Galaxy, we integrate the orbit of HIP 60350 back to the plane of the Galaxy. In this way, a possible location of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c203921a9523c7e64c5815f64f27247
https://doi.org/10.1051/0004-6361:20010046
https://doi.org/10.1051/0004-6361:20010046