PHOENIX - an intermediate dwarf galaxy in the Local Group

Details PHOENIX - an intermediate dwarf galaxy in the Local Group PHOENIX - an intermediate dwarf galaxy in the Local Group

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..130v&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, July 1991, p. 130-136. NSERC-supported research.

Astronomy and Astrophysics

Astronomy

51

Dwarf Galaxies, Irregular Galaxies, Local Group (Astronomy), Astronomical Photometry, Color-Magnitude Diagram, Galactic Structure, Red Giant Stars, Star Formation

Scientific paper

This paper presents results on CCD BVI photometry of Phoenix, a dwarf galaxy in the Local Group, including the uncrowded outer parts of Phoenix not surveyed by Ortolani and Gratton (1988). It is shown that Phoenix is comparable, in terms of absolute magnitude, to systems like the dwarf irregular galaxies LGS3 and SagDIG. The presence of a few very red giants in Phoenix suggests that an intermediate age population is also present in Phoenix, making its star-formation history more complex than that of any known dwarf spheroidal galaxy and indicating that Phoenix can be put in a class of galaxies intermediate between irregulars and spheroidals.

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