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- W2088892179 abstract "view Abstract Citations (26) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS UGC 7636 and NGC 4472: Tidal Interaction between a Stripped Dwarf Irregular and a Giant Elliptical Galaxy Patterson, Richard J. ; Thuan, Trinh X. Abstract We present new B and I CCD and H I observations of the system in the Virgo Cluster composed of the dwarf irregular galaxy UGC 7636 and the giant elliptical galaxy NGC 4472. These observations strongly suggest that both ram-pressure and tidal stripping have occurred in this system. The H I gas between the two galaxies has been stripped from UGC 7636. Its M(H I)/L_B_ ratio is 0.26 M_sun_/L_B_sun_, in the range observed for dwarf irregulars. Ram-pressure stripping of the H I gas from the dwarf is suggested by the large velocity width ({DELTA}v_50_~110 km s^-1^) of the spatially extended H I envelope. The presence of a red optical tidal tail and countertail in the dwarf, with the same colors as the stars in the dwarf's outer regions, as well as a disturbed morphology in the dwarf's inner parts, are evidence for tidal interaction between the two galaxies. Publication: The Astrophysical Journal Pub Date: December 1992 DOI: 10.1086/186648 Bibcode: 1992ApJ...400L..55P Keywords: Dwarf Galaxies; Elliptical Galaxies; Interacting Galaxies; Irregular Galaxies; Virgo Galactic Cluster; Astronomical Photometry; Cosmology; Galactic Structure; H I Regions; Intergalactic Media; Interstellar Gas; Astrophysics; GALAXIES: EVOLUTION; GALAXIES: INDIVIDUAL NGC NUMBER: NGC 4472; GALAXIES: INDIVIDUAL ALPHANUMERIC: UGC 7636; GALAXIES: INTERACTIONS; GALAXIES: INTERSTELLAR MATTER; GALAXIES: PHOTOMETRY full text sources ADS | data products SIMBAD (2) NED (2)" @default.
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- W2088892179 date "1992-12-01" @default.
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- W2088892179 title "UGC 7636 and NGC 4472 - Tidal interaction between a stripped dwarf irregular and a giant elliptical galaxy" @default.
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