Weakly barred early-type ringed galaxies. IV - The double-ringed SO(+) galaxy NGC 7702

Details Weakly barred early-type ringed galaxies. IV - The double-ringed SO(+) galaxy NGC 7702 Weakly barred early-type ringed galaxies. IV - The double-ringed SO(+) galaxy NGC 7702

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...370..130b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, March 20, 1991, p. 130-139.

Astronomy and Astrophysics

Astrophysics

24

Barred Galaxies, Galactic Evolution, Galactic Structure, Ring Galaxies, Astronomical Photometry, Charge Coupled Devices, Galactic Bulge, Southern Sky, Star Formation

Scientific paper

UBVRI surface photometry of NGC 7702, obtained with a CCD detector on the 3.9-m Anglo-Australian Telescope and with photographic plates on the 4-m telescope at CTIO, is reported. The data are presented in tables, graphs, and contour maps and characterized in detail. NGC 7702 is found to be a true S0(+) galaxy with a bright high-contrast inner ring and a faint low-contrast outer ring; the inner ring is significantly elongated relative to typical SB inner rings and has colors which suggest a burst of star formation less than 2 Gyr ago. A small oval revealed by the bulge isophotes in the inner 4 arcsec radius is attributed to a nuclear bar.

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