The possible origin of the faint fuzzy star clusters in NGC 1023
نویسندگان
چکیده
In the lenticular galaxy NGC 1023 a new population of star clusters (" faint fuzzies ") was recently discovered by Larsen & Brodie. These clusters are found inside the disc and are faint (23 ≤ V ≤ 24 mag) and extended with effective radii of r eff ≈ 7 to 15 pc. We present here N-body calculations of a likely formation-scenario through merging star clusters in clusters of star clusters (super-clusters). Such super-clusters are observed to form in interacting galaxies. The resulting merger objects have masses comparable to the " faint fuzzies " and show large effective radii (r eff > 7 pc). Even though these objects are suffering from strong tidal forces they are able to survive and reach the estimated ages of the extended star clusters in NGC 1023.
منابع مشابه
Faint Fuzzies and the Formation of Lenticular Galaxies
We investigate the dynamical state of a new class of extended star clusters, known as ”Faint Fuzzies”, that were discovered in two nearby S0 galaxies, NGC 1023 and NGC 3384. It is shown that the Faint Fuzzies of NGC 1023 lie in a fast rotating ring-like structure within the galactic disk with mean radius of 5 kpc, rotational velocity of 200 km/s and velocity dispersion of 115 km/s. We propose a...
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