Optical haloes around galaxies

Details Optical haloes around galaxies Optical haloes around galaxies

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..36...29b&link_type=abstract

ESO Messenger (ISSN 0722-6691), June 1984, p. 29-31.

Astronomy and Astrophysics

Astronomy

1

Astronomical Spectroscopy, Galactic Structure, Halos, Electrophotometry, Photographic Plates, Schmidt Telescopes, Southern Sky

Scientific paper

The results obtained from CCD and digitizing microdensitometry of nearby galaxies, with attention focused on optical halos, are reported. NGC 55, NGC 253, NGC 4594 (M104) and NGC 4945 were scanned and plates were made in the U, B, R and I color ranges. Photoelectric photometry with an uvgr filter system using 1 m and 50 cm telescopes helped quantify night sky variations and reduce noise. No color gradients were detected in the galaxies, nor was a source identified for the weak light at the fringes of the galaxies. The examination of a larger sample of galaxies is indicated.

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