Do Nuclear Star Clusters and Supermassive Black Holes Follow the Same Host-Galaxy Correlations?
Joint Authors
Gadotti, Dimitri Alexei
Erwin, Peter
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-04
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
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 the bulge component of galaxies, the masses of NSCs correlate much better with the total galaxy stellar mass.
In addition, the mass ratio MNSC/M⋆, tot for NSCs in spirals (at least those with Hubble types Sc and later) is typically an order of magnitude smaller than the mass ratio MBH/M⋆, bul of 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.
American Psychological Association (APA)
Erwin, Peter& Gadotti, Dimitri Alexei. 2012. Do Nuclear Star Clusters and Supermassive Black Holes Follow the Same Host-Galaxy Correlations?. Advances in Astronomy،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-510377
Modern Language Association (MLA)
Erwin, Peter& Gadotti, Dimitri Alexei. Do Nuclear Star Clusters and Supermassive Black Holes Follow the Same Host-Galaxy Correlations?. Advances in Astronomy No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-510377
American Medical Association (AMA)
Erwin, Peter& Gadotti, Dimitri Alexei. Do Nuclear Star Clusters and Supermassive Black Holes Follow the Same Host-Galaxy Correlations?. Advances in Astronomy. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-510377
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-510377