Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252p..27k&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Sept. 15, 1991, p. 27P-30P.
Astronomy and Astrophysics
Astronomy
11
Astronomical Photography, Galactic Structure, Interacting Galaxies, Halos, Photographic Plates, Schmidt Cameras, Tides
Scientific paper
The interacting pair of galaxies NGC 5215a and b has been investigated by means of a coadded data array of APM scans of eight Schmidt plates. The pair is found to be embedded in a common halo, and each member has a tidal tail which trails the rotation of the core region. Distortions of the isophotes of the pair confirm the tidal interaction between the two galaxies. A detached filament to the north of the pair is presumed to consist of stars tidally stripped from the pair, and the halo is considerably extended to the south, presumably due to further stars becoming unbound. The mass within the common halo is at least about 8 x 10 to the 10th solar masses. The large spiral NGC 5220, at a similar distance, forms a much disturbed chain with the components of NGC 5215 and some smaller galaxies.
Kemp Simon N.
Meaburn John
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