Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223..386g&link_type=abstract
Astrophysical Journal, Part 1, vol. 223, July 15, 1978, p. 386-390.
Astronomy and Astrophysics
Astrophysics
20
Galactic Clusters, Galactic Structure, Intergalactic Media, Interstellar Matter, Pressure Effects, Spiral Galaxies, Collisions, Deposition, Disks, Filaments, Galactic Evolution, Optical Properties, X Ray Sources
Scientific paper
An asymmetrical distribution of very faint, filamentary features has been detected in blue light extending from the disk of NGC 3312, a peculiar spiral in the Hydra I cluster. Several interpretations for this type of phenomenon are possible (e.g., collisions, internal activity, an M82 type of event), but the location of NGC 3312 near the cluster core suggests the disturbance is related to the cluster environment. Hydra I is an X-ray source and therefore probably contains an intracluster medium. Thus the interesting possibility exists that NGC 3312 is being stripped of its interstellar medium by ram-pressure, and is an optical analog to a radio head-tail source.
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