NGC 3593
Template:Short description Template:Infobox Galaxy NGC 3593 is a lenticular galaxy located in the constellation Leo. It has a morphological classification of SA(s)0/a,[1] which indicates it is a lenticular galaxy of the pure spiral type.[2] Despite this, it has a large amount of hydrogen, both in its molecular (Template:Chem/link) and atomic (H) form.[3] It is a starburst galaxy, which means it is forming new stars at a high rate. This is occurring in a band of gas surrounding the central nucleus. There is a single arm, which spirals outward from this ring.[4] It is frequently but not consistently identified as a member of the Leo Triplet group.[5]
This galaxy is known to contain two counter-rotating populations of stars—that is, one set of stars is rotating in the opposite direction with respect to the other.[3] One means for this to occur is by acquiring gas from an external source, which then undergoes star formation. An alternative is by a merger with a second galaxy. Neither scenario has been ruled out. The age of the lower mass, counter-rotating population is younger by about 1.6 ± 0.8 Gyr than the primary star population of the galaxy.[4]
A dynamical study found that there is likely a supermassive black hole (SMBH) at the center of NGC 3593. The mass of the SMBH is between Script error: No such module "val". and Script error: No such module "val". solar masses.[3]
References
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