Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...248....1h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 248, no. 1, Aug. 1991, p. 1-11.
Astronomy and Astrophysics
Astrophysics
20
Dwarf Galaxies, Interacting Galaxies, Irregular Galaxies, Astronomical Spectroscopy, Charge Coupled Devices, Color-Magnitude Diagram, Emission Spectra, H Ii Regions, Stellar Mass, Stellar Rotation
Scientific paper
The present study of optical images and spectroscopy of the dwarf irregular galaxy UGC 5272 notes the presence, at 3.6 kpc, of a small neighboring galaxy which is also of irregular type and has a Holmberg diameter of 0.6 kpc. Attention is given to the possibility that the two galaxies, which are resolved into single stars, may form a physical pair. It is suggested that the blue-to-red supergiant ratio of UGC 5272 is high due to its low metallicity. While its extremely blue colors are suggestive of a recent starburst, the structural parameters of the galaxy are surprisingly normal. The gas contribution to total mass is high.
Hopp Ulrich
Schulte-Ladbeck Regina E.
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