The Birth of AGNs and Quasars via the Collapse of Dense Star Clusters to Supermassive Black Holes

1986 ◽  
pp. 129-147
Author(s):  
Stuart L. Shapiro
Keyword(s):  
Black Holes ◽  
Star Clusters ◽  
Supermassive Black Holes

scholarly journals Nuclear star clusters

2009 ◽  
Vol 5 (S266) ◽  
pp. 58-63 ◽  
Author(s):  
Torsten Böker
Keyword(s):  
Black Holes ◽  
Structural Properties ◽  
Galaxy Evolution ◽  
Globular Clusters ◽  
Star Clusters ◽  
Supermassive Black Holes ◽  
Subsequent Growth ◽  
Local Universe ◽  
Fundamental Plane ◽  
Evolutionary Connection

AbstractThe centers of most galaxies in the local Universe are occupied by compact, barely resolved sources. Based on their structural properties, position in the Fundamental Plane, and integrated spectra, these sources clearly have a stellar origin. They are therefore called ‘nuclear star clusters’ (NCs) or ‘stellar nuclei’. NCs are found in galaxies of all Hubble types, suggesting that their formation is intricately linked to galaxy evolution. Here, I review some recent studies of NCs, describe ideas for their formation and subsequent growth, and touch on their possible evolutionary connection with both supermassive black holes and globular clusters.

scholarly journals Nuclear Star Clusters (Nuclei) in Spirals and Connection to Supermassive Black Holes

2006 ◽  
Vol 2 (S241) ◽  
Author(s):  
Roeland P. van der Marel ◽  
Joern Rossa ◽  
Carl Jakob Walcher ◽  
Torsten Boeker ◽  
Luis C. Ho ◽  
...  
Keyword(s):  
Black Holes ◽  
Star Clusters ◽  
Supermassive Black Holes

scholarly journals Do Nuclear Star Clusters and Supermassive Black Holes Follow the Same Host-Galaxy Correlations?

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Peter Erwin ◽  
Dimitri Alexei Gadotti
Keyword(s):  
Black Holes ◽  
Star Clusters ◽  
Careful Analysis ◽  
Stellar Mass ◽  
Supermassive Black Holes ◽  
Host Galaxy ◽  
Mass Ratio ◽  
Host Galaxies ◽  
Order Of Magnitude ◽  
The Masses

Studies have suggested that there is a strong correlation between the masses of nuclear star clusters (NSCs) and their host galaxies, a correlation which is said to be an extension of the well-known correlations between supermassive black holes (SMBHs) and their host galaxies. But careful analysis of disk galaxies—including 2D bulge/disk/bar decompositions—shows that while SMBHs correlate with the stellar mass of thebulgecomponent of galaxies, the masses of NSCs correlate much better with thetotalgalaxy stellar mass. In addition, the mass ratioMNSC/M⋆, totfor NSCs in spirals (at least those with Hubble types Sc and later) is typically an order of magnitude smaller than the mass ratioMBH/M⋆, bulof SMBHs. The absence of a universal “central massive object” correlation argues against common formation and growth mechanisms for both SMBHs and NSCs. We also discuss evidence for a break in the NSC-host galaxy correlation, galaxies with Hubble types earlier than Sbc appear to host systematically more massive NSCs than do types Sc and later.

scholarly journals Do Nuclear Star Clusters and Supermassive Black Holes Follow the Same Host-Galaxy Correlations?

2010 ◽  
Author(s):  
Peter Erwin ◽  
Dimitri Gadotti ◽  
Victor P. Debattista ◽  
C. C. Popescu
Keyword(s):  
Black Holes ◽  
Star Clusters ◽  
Supermassive Black Holes ◽  
Host Galaxy

How big are supermassive black holes formed from the collapse of dense star clusters?

1987 ◽  
Vol 320 ◽  
pp. 73 ◽  
Author(s):  
Christopher S. Kochanek ◽  
Stuart L. Shapiro ◽  
Saul A. Teukolsky
Keyword(s):  
Black Holes ◽  
Star Clusters ◽  
Supermassive Black Holes
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