NGC 3201
(Caldwell 79)
(globular cluster in which a black hole has been identified)
NGC 3201 (aka Caldwell 79) is a
globular cluster with a radius of 40 ly and a
presumed age of more than 10 gigayears (one determination
is 10.24 Gy).
It is of interest because a probable black hole
has been identified, using the radial velocity of a star
that indicates it is orbiting something unseen and very massive
(more mass than would be possible for a neutron star,
white dwarf or red dwarf).
It is assumed that globular clusters generally host multiple stellar-mass black holes,
simply based upon the large number of resident stars,
but currently they can only be identified when specific clues are
available, such as in this case.
(globular cluster,RV method)
Further reading:
https://en.wikipedia.org/wiki/NGC_3201
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3201
http://spider.seds.org/spider/MWGC/n3201.html
https://people.smp.uq.edu.au/HolgerBaumgardt/globular/fits/ngc3201.html
https://ui.adsabs.harvard.edu/abs/2018MNRAS.475L..15G/abstract
https://ui.adsabs.harvard.edu/abs/2018ApJ...855L..15K/abstract
Redshift | Parsecs /Distance | Lightyears /Lookback Years | | |
~0 | 5kpc | 16.0kly | | NGC 3201 |
|
Coordinates: | NGC 3201 J101736.82-462444.9 |
|
Index