Neutral hydrogen distribution in the NGC 7465 group of galaxies

Abstract

view Abstract Citations (20) References (31) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Nuetral Hydrogen Distribution in the NGC 7465 Group of Galaxies Li, Jonathan G. ; Seaquist, E. R. Abstract High resolution neutral hydrogen observations in the NGC 7465 small group of galaxies reveal tidally distorted H I morphology and kinematics in four out of the five members studied. An H I "bridge" was detected connecting, in projection, UGC 12313 and NGC 7463 or the subgroup as a whole. The sides of both galaxies connected with the bridge show signs of recent interaction. The bridge has a small velocity gradient and its radial velocities merge with those of the southeast part of UGC 12313, suggesting a physical link between the two. The H I emission from NGC 7463 is well separated in velocity space from that of NGC 7464/7465 and shows peculiar morphology and kinematics as a result of "high- velocity" gas occurring above the eastern side of the disk. An r ~ 80" ring around NGC 7465 dominates the H I emission from NGC 7464/7465. There is evidence to suggest that it represents a polar ring around NGC 7465 and could be material pulled out from NGC 7464 during a close encounter with NGC 7465. UGC 12321 is the only galaxy which shows overall unperturbed morphology and its H I kinematics are consistent with a disk galaxy seen nearly edge-on. Nevertheless, we identified two asymmetries in its H I distribution. Publication: The Astronomical Journal Pub Date: June 1994 DOI: 10.1086/117007 Bibcode: 1994AJ....107.1953L Keywords: Galactic Nuclei; H I Regions; Interstellar Gas; Spiral Galaxies; Absorption Spectra; Emission Spectra; Very Large Array (Vla); Astronomy; GALAXIES: EVOLUTION; GALAXIES: KINEMATICS AND DYNAMICS full text sources ADS | data products SIMBAD (10) NED (5)