Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Tenjes, Peeter"'
The gas distribution in galaxies is smooth on large scales but is usually inhomogeneous as well as time-dependent on smaller scales. The time-dependence originates from processes such as cloud formation, their collisions and supernovae (SNe) explosio
Externí odkaz:
http://arxiv.org/abs/2404.18086
Autor:
Kipper, Rain, Tenjes, Peeter, Benito, María, Veena, Punyakoti Ganeshaiah, Triantafyllaki, Aikaterini Niovi, Vurm, Indrek, Muru, Moorits Mihkel, Einasto, Maret, Tempel, Elmo
Dynamical friction can be a valuable tool for inferring dark matter properties that are difficult to constrain by other methods. Most applications of dynamical friction calculations are concerned with the long-term angular momentum loss and orbital d
Externí odkaz:
http://arxiv.org/abs/2311.03790
Autor:
Einasto, Maret, Einasto, Jaan, Tenjes, Peeter, Korhonen, Suvi, Kipper, Rain, Tempel, Elmo, Liivamägi, Lauri Juhan, Heinämäki, Pekka
Our aim is to combine data on single galaxies, galaxy groups, their BGGs, and their location in the cosmic web, to determine classes of groups, and to obtain a better understanding of their properties and evolution. Data on groups and their BGGs are
Externí odkaz:
http://arxiv.org/abs/2311.01868
Autor:
Einasto, Maret, Kipper, Rain, Tenjes, Peeter, Einasto, Jaan, Tempel, Elmo, Liivamägi, Lauri Juhan
Publikováno v:
A&A 668, A69 (2022)
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:
http://arxiv.org/abs/2210.10761
Autor:
Einasto, Maret, Tenjes, Peeter, Gramann, Mirt, Lietzen, Heidi, Kipper, Rain, Liivamägi, Lauri Juhan, Tempel, Elmo, Sankhyayan, Shishir, Einasto, Jaan
Publikováno v:
A&A 666, A52 (2022)
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:
http://arxiv.org/abs/2204.08918
Matter distribution models of the Milky Way galaxy are usually stationary, although there are known to be wave-like perturbations in the disc at $\sim10\%$ level of the total density. Modelling of the overall acceleration field by allowing non-equili
Externí odkaz:
http://arxiv.org/abs/2106.07076
Autor:
Einasto, Maret, Kipper, Rain, Tenjes, Peeter, Lietzen, Heidi, Tempel, Elmo, Liivamägi, Lauri Juhan, Einasto, Jaan, Tamm, Antti, Heinämäki, Pekka, Nurmi, Pasi
Publikováno v:
A&A 649, A51 (2021)
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:
http://arxiv.org/abs/2103.02326
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
Externí odkaz:
http://arxiv.org/abs/2008.07177
Autor:
Einasto, Maret, Deshev, Boris, Tenjes, Peeter, Heinämäki, Pekka, Tempel, Elmo, Liivamägi, Lauri Juhan, Einasto, Jaan, Lietzen, Heidi, Tuvikene, Taavi, Chon, Gayoung
Publikováno v:
A&A 641, A172 (2020)
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:
http://arxiv.org/abs/2007.04910
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:
http://arxiv.org/abs/2004.10986