Stellar Subsystems of the Galaxy NGC 2366

Details Stellar Subsystems of the Galaxy NGC 2366 Stellar Subsystems of the Galaxy NGC 2366

2007-12-05

arxiv.org/abs/0712.0712v2

Astronomy and Astrophysics

Astrophysics

16 pages, 4 figures, Astronomy Reports, 2008,v. 52, n.1, p. 19

Scientific paper

Hubble Space Telescope archive data are used to perform photometry of stars in seven fields at the center and periphery of the galaxy NGC2366. The variation of the number density of stars of various ages with galactocentric radius and along the minor axis of the galaxy are determined. The boundaries of the thin and thick disks of the galaxy are found. The inferred sizes of the subsystems of NGC2366 ($Z_{thin} = 4$ kpc and $Z_{thick} = 8$ kpc for the thin and thick disks, respectively) are more typical for spiral galaxies. Evidence for a stellar halo is found at the periphery of NGC2366 beyond the thick disk of the galaxy.

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