Nuclear clusters and nuclear molecules

It is shown that the hole in the centre of 3 H , 3 He and 4 He , the neutron halos in nuclei, the α- and other clustering effects in nuclei and the nuclear molecules all basically arise due to the same underlying effect. We shall show that all these ground state properties of nuclei are manifestations of quark effects. The role of triton clustering in very neutron rich nuclei is emphasized. All these require the concept of hidden colour states which arise from confinement ideas of QCD for the multi-quark systems. This provides a comprehensive understanding of diverse nuclear effects and makes unique predictions.

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New Methods for Prediction of Bond Order of Mono and Diatomic Homo and Hetero Nuclear Molecules or Ions Having (1-20) E¯S and Oxide Based Acid Radicals Without Mot – A Rapid Innovative Approach

Indian Journal Of Applied Research ◽

10.15373/2249555x/nov2013/13 ◽

2011 ◽

Vol 3 (11) ◽

pp. 41-43

Author(s):

ARIJIT DAS ◽

Keyword(s):

Bond Order ◽

Innovative Approach ◽

New Methods ◽

Nuclear Molecules

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High‐Resolution Infrared Spectroscopy and Nuclear Clusters in the Starburst Galaxy NGC 1614

The Astrophysical Journal ◽

10.1086/306983 ◽

1999 ◽

Vol 514 (2) ◽

pp. 675-681 ◽

Cited By ~ 10

Author(s):

P. J. Puxley ◽

P. W. J. L. Brand

Keyword(s):

Infrared Spectroscopy ◽

High Resolution ◽

Starburst Galaxy ◽

Nuclear Clusters

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The accreted nuclear clusters of the Milky Way

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/staa3407 ◽

2020 ◽

Vol 500 (2) ◽

pp. 2514-2524

Author(s):

Joel Pfeffer ◽

Carmela Lardo ◽

Nate Bastian ◽

Sara Saracino ◽

Sebastian Kamann

Keyword(s):

Globular Clusters ◽

Milky Way ◽

Dwarf Galaxy ◽

Star Clusters ◽

Host Galaxy ◽

The Galaxy ◽

Nuclear Clusters ◽

The Common ◽

Massive Clusters ◽

Peculiar Case

ABSTRACT A number of the massive clusters in the halo, bulge, and disc of the Galaxy are not genuine globular clusters (GCs) but instead are different beasts altogether. They are the remnant nuclear star clusters (NSCs) of ancient galaxies since accreted by the Milky Way. While some clusters are readily identifiable as NSCs and can be readily traced back to their host galaxy (e.g. M54 and the Sagittarius Dwarf galaxy), others have proven more elusive. Here, we combine a number of independent constraints, focusing on their internal abundances and overall kinematics, to find NSCs accreted by the Galaxy and trace them to their accretion event. We find that the true NSCs accreted by the Galaxy are: M54 from the Sagittarius Dwarf, ω Centari from Gaia-Enceladus/Sausage, NGC 6273 from Kraken, and (potentially) NGC 6934 from the Helmi Streams. These NSCs are prime candidates for searches of intermediate-mass black holes (BHs) within star clusters, given the common occurrence of galaxies hosting both NSCs and central massive BHs. No NSC appears to be associated with Sequoia or other minor accretion events. Other claimed NSCs are shown not to be such. We also discuss the peculiar case of Terzan 5, which may represent a unique case of a cluster–cluster merger.

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