SIMBAD references

2000AJ....120.3060H - Astron. J., 120, 3060-3069 (2000/December-0)

Stellar populations in the Phoenix dwarf (dIrr/dSph) galaxy as observed by Hubble space telescope WFPC2.


Abstract (from CDS):

We present Hubble Space Telescope Wide Field Planetary Camera 2 photometry of the central regions of the Phoenix dwarf galaxy. Accurate photometry allows us to (1) confirm the existence of the horizontal branch previously detected by ground-based observations and use it to determine a distance to Phoenix, (2) clearly detect the existence of multiple ages in the stellar population of Phoenix, (3) determine a mean metallicity of the old red giant branch stars in Phoenix and suggest that Phoenix has evolved chemically over its lifetime, and (4) extract a rough star formation history for the central regions, which suggests that Phoenix has been forming stars roughly continuously over its entire lifetime.

Abstract Copyright:

Journal keyword(s): Galaxies: Dwarf - Galaxies: Stellar Content

Simbad objects: 6

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