Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...222l..99l&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 222, June 15, 1978, p. L99-L103.
Astronomy and Astrophysics
Astrophysics
35
Astronomical Photography, Galactic Structure, Image Enhancement, Image Processing, Spiral Galaxies, Color, Image Filters
Scientific paper
Plates of NGC 1097 taken in four spectral bands have been digitized and processed at JPL's Image Processing Laboratory. The processing has revealed that (1) there is a fourth jet, R4, counter to the L-shaped jet, R1; (2) the area density of point sources in the jets is no different from that found on the sky; (3) two of the jets, R1 and R2, are bluer than the night sky, while one of the jets, R3, is redder than the night sky; (4) the nonstellar objects situated on the jets are noticeably bluer than the night sky; and (5) color-enhanced images of the spiral structure illustrate the distribution of both gaseous and spiral-arm stellar population disrupted from symmetry by an apparent companion elliptical.
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