Photometry of luminous spiral galaxies in the direction of the Great Attractor

Details Photometry of luminous spiral galaxies in the direction of the Great Attractor Photometry of luminous spiral galaxies in the direction of the Great Attractor

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....103.1501v&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 103, no. 5, May 1992, p. 1501-1511.

Astronomy and Astrophysics

Astronomy

5

Astronomical Photometry, Spiral Galaxies, Astronomical Catalogs, Electrophotometry, Interstellar Extinction, Luminosity, Red Shift

Scientific paper

This paper presents photoelectric multiaperture BVI magnitudes for a homogeneous sample of luminous spirals in the direction of the Great Attractor. The total magnitudes B(T) and the mean colors (B - V) and (B - I) were determined for each galaxy and analyzed. The (B - I) color changes linearly with csc b over the range 3-10 and has a slope of 0.071 mag. The A super bB values calculated from B - I agrees well with the A super bB values derived following the precepts of Burstein and Heiles (1978). The (B - I) super b values show a slope of 0.47 with log R. The corrected absolute magnitudes M super b,i,zB of spirals show little variation with luminosity classes I, I-II, and II and have a dispersion of 0.85 mag. The sample with well determined luminosities exhibits a uniform distribution over log v up to v about 10,000 km/s. There is an indication that a selection-bias favoring higher luminosity galaxies sets in for spiral galaxies with v greater than 10,000 km/s. The spirals with v less than 10,000 km/s place a limit of about 500 km/s on peculiar velocities in or near the Great Attractor.

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