Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..123d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 1, 1983, p. 123-132.
Astronomy and Astrophysics
Astrophysics
37
Astronomical Spectroscopy, Dwarf Galaxies, Galactic Structure, Magellanic Clouds, Mass To Light Ratios, Astronomical Photography, Electrophotometers, Isophotes, Stellar Luminosity, Stellar Magnitude
Scientific paper
Reaves (1956) has discovered the magellanic dwarf irregular galaxy DDO 155 = A1256+14 = GR 8. A major question remains the rather uncertain distance. The median value of the distances listed by Hodge (1974) is actually 1.3 Mpc, corresponding to a distance modulus of 25.5 + or - 0.5. The present investigation was conducted to obtain more detailed and more precise information on this object and, if possible, an improved value of its distance modulus. The several estimates of the distance modulus obtained have a median value of 25.2 and a weighted mean equal to 25.30 + or - 0.36. A distance modulus value of 25.25 + or - 0.4 corresponding to a distance 1.12 (1 + or 0.2)Mpc, in good agreement with Hodge's estimates is adopted.
de Vaucouleurs Gerard
Moss Calvin
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