Mathematics – Logic
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6483e&link_type=abstract
HST Proposal ID #6483
Mathematics
Logic
Hst Proposal Id #6483 Galaxies &Amp, Clusters
Scientific paper
WFPC2 observations are requested to obtain UBVI images of IC 2163/NGC 2207, the best example of five well-studied galaxy pairs that exhibit peculiar structures suggestive of recent, close, strong, non--merging encounters. Our ground-based observations of this pair reveal 10^8 M_odot HI clouds, streaming motions in excess of 100 km s^-1, enhanced gas turbulence, an intrinsically oval disk, possible dwarf galaxy formation in tidal debris, and a large warp, all indicative of extreme tidal agitation but with no sign yet of a nuclear starburst. Our numerical models reproduce these features and suggest that perigalacticon occurred ~40 My ago. HST is needed to resolve a tidal--arm dust lane that is probably a shock front, young star clusters that may be proto--globular, embedded star formation in fast--streaming gas, in 10^8 M_odot clouds, and in tidal debris, and dust lane structure in a morphologically peculiar bar that may become a nuclear starburst. All of these observations will help clarify how galaxy interactions cause shocks, trigger star formation, and possibly make bars. A partial line--of--sight overlap of IC 2163 also allows a direct measurement of extinction through the galaxy disk of NGC 2207.
No associations
LandOfFree
HST Observations of Galaxies in a Close, Nonmerging Encounter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with HST Observations of Galaxies in a Close, Nonmerging Encounter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HST Observations of Galaxies in a Close, Nonmerging Encounter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1117716