NGC 5523: An isolated product of soft galaxy mergers?

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Table 4

A photometric evaluation of stellar masses for the significant features of NGC 5523.

Object	Area (kpc²)	[3.6]	Mass (M_⊙)

Galaxy total (outer disk)	1110.6	9.5	~ 1.0 × 10¹⁰
Nucleated bulge	10.3	12.9	~ 5.5 × 10⁸
Visible tidal stream	6.9	17.1	~ 1.2 × 10⁷

Notes. All values in Table 4 are derived from Apphot analyses of a sky-subtracted 3.6 μm SST image of NGC 5523. The calculations of stellar masses assume . Figure 2 exhibits the contour levels that defined these regions in our photometric analyses.

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