11 papers · 1 filter
A binary system in the S cluster close to the supermassive black hole Sagittarius A*
Florian PeiÃker, Michal Zajacek, Lucas Labadie +4
High-velocity stars and peculiar G objects orbit the central supermassive black hole (SMBH) Sagittarius A* (Sgr A*). Together, the G objects and high-velocity stars constitute the…
MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field
Göran Ãstlin, Pablo G. Pérez-González, Jens Melinder +41
The recently launched James Webb Space Telescope (JWST) is opening new observing windows on the distant universe. Among JWST's instruments, the Mid Infrared Instrument (MIRI) offer…
JWST/MIRI unveils the stellar component of the GN20 dusty galaxy overdensity at =4.05
A. Crespo Gómez, L. Colina, J. Ãlvarez-Márquez +24
Despite the importance of the dusty star-forming galaxies (DSFGs) at >2 for understanding the galaxy evolution in the early Universe, their stellar distributions traced by the n…
Discovery of a Dense Association of Stars in the Vicinity of the Supermassive Black Hole Sgr A*
S. Elaheh Hosseini, Andreas Eckart, Michal ZajaÄek +3
We focus on a sample of 42 sources in the vicinity of the bow-shock source IRS 1W (N-sources), located at the distance of north-east of the supermassive black hole (SMBH)…
Dynamics of star associations in an SMBH-IMBH system: The case of IRS13 in the Galactic centre
Václav PavlÃk, VladimÃr Karas, Bhavana Bhat +2
Context: The existence of intermediate-mass black holes (IMBHs) still poses challenges to theoretical and observational astronomers. Several candidates have been proposed, includin…
The Evaporating Massive Embedded Stellar Cluster IRS 13 Close to Sgr A*. II. Kinematic structure
Florian PeiÃker, Michal Zajacek, Matus Labaj +8
The existence of two distinct and apparently unrelated populations of dusty stellar objects in the Nuclear Stellar Cluster (NSC) of the Milky Way, namely IRS 13 and the S-cluster,…