Photometry of resolved galaxies. IV - Holmberg I and Holmberg II

Details Photometry of resolved galaxies. IV - Holmberg I and Holmberg II Photometry of resolved galaxies. IV - Holmberg I and Holmberg II

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...286..159h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 286, Nov. 1, 1984, p. 159-170.

Astronomy and Astrophysics

Astronomy

18

Astronomical Catalogs, Astronomical Photometry, Dwarf Galaxies, Hertzsprung-Russell Diagram, Local Group (Astronomy), Charge Coupled Devices, Spectral Resolution, Star Formation Rate, Stellar Color, Stellar Evolution, Stellar Luminosity, Stellar Magnitude

Scientific paper

Colors and magnitudes are presented for 279 resolved stars in the Holmberg I dwarf galaxy and 468 resolved stars in Holmberg II. Both systems are Magellanic type dwarf members of the M81-NGC 2403 Group, which lies at approximately 3 Mpc from the Local Group. The photometry was done in the GRI passbands using CCD detectors. Color-magnitude diagrams and luminosity functions are constructed; these are compared with results for several Local Group galaxies and with theoretical work. Holmberg I is found to have a low present star formation rate, while Holmberg II is very active at present.

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