REVIEW 7 cited by
Nuclear Star Clusters
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
We review the current knowledge about nuclear star clusters (NSCs), the spectacularly dense and massive assemblies of stars found at the centers of most galaxies. Recent observational and theoretical work suggest that many NSC properties, including their masses, densities, and stellar populations vary with the properties of their host galaxies. Understanding the formation, growth, and ultimate fate of NSCs therefore is crucial for a complete picture of galaxy evolution. Throughout the review, we attempt to combine and distill the available evidence into a coherent picture of NSC evolution. Combined, this evidence points to a clear transition mass in galaxies of ~10^9 solar masses where the characteristics of nuclear star clusters change. We argue that at lower masses, NSCs are formed primarily from globular clusters that inspiral into the center of the galaxy, while at higher masses, star formation within the nucleus forms the bulk of the NSC. We also discuss the coexistence of NSCs and central black holes, and how their growth may be linked. The extreme densities of NSCs and their interaction with massive black holes lead to a wide range of unique phenomena including tidal disruption and gravitational wave events. Lastly, we review the evidence that many NSCs end up in the halos of massive galaxies stripped of the stars that surrounded them, thus providing valuable tracers of the galaxies' accretion histories.
Forward citations
Cited by 7 Pith papers
-
Binary disruptions driven by massive disks around massive black holes
Disk torques can drive stellar binaries around a massive black hole to tidal disruption, and the Milky Way's young stellar disk likely caused ~10^2 such events ~5 Myr ago.
-
The complex stellar system M 22: constraining the chemical enrichment from AGB stars using magnesium isotope ratios
First Mg isotope measurements at [Fe/H]≈-2 in a globular cluster show no difference tied to s-process enrichment, favoring ~2.75 M_sun AGB polluters and a 280–480 Myr age gap.
-
The complex stellar system M 22: confirming abundance variations with high precision differential measurements
High-precision differential abundances confirm M 22 hosts a >0.24 dex iron spread and ~0.65 dex s-process spread, and reveal new internal abundance variations within each population.
-
High-Energy Neutrinos from Black Hole Evaporation in Neutron Stars
Repeated collapse of asymmetric dark matter inside neutron stars into evaporating microscopic black holes can produce a Galactic-Center-concentrated high-energy neutrino flux at the 10^-12 GeV cm^-2 s^-1 level, subdom...
-
Probing the sensitivity of CTAO-N LSTs observations at large zenith angles to the multi-TeV gamma-ray emission from the inner 10 parsecs of the Galactic Center
A simulation predicts that 500 hours of CTAO-North four-LST observations at large zenith angles can discriminate between dark-matter, millisecond-pulsar, and proton-induced models of the Galactic Center TeV source HES...
-
Galactic Centre Pulsars with the SKAO
Updated SKA-MID sensitivity and multi-beam search strategies can detect up to ~84% of Galactic Centre pulsars (and ~60% of MSPs) under magnetar-like scattering, unlocking precision tests around Sgr A*.
-
Compact Objects in Globular Clusters
Globular clusters host many stellar remnants, and their dense environments produce X-ray sources, radio pulsars, and gravitational-wave black hole mergers.
Discussion (0). Continue with ORCID to comment.