Abstract
view Abstract Citations (37) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Central Velocity Dispersion of the Lensing Galaxy in the Quadruple Lens System Q2237+0305 Foltz, Craig B. ; Hewett, Paul C. ; Webster, Rachel L. ; Lewis, Geraint F. Abstract We report a measurement of the projected central velocity dispersion for the lensing galaxy in the quadruple gravitational lens system Q2237 + 0305. Observations of the galaxy nucleus taken in superb Seeing conditions with the 4.2 m William Herschel Telescope produce a value for the central velocity dispersion of σ_p_= 215 +/- 30 km s^-1^. The value is consistent with the predictions of theoretical models of the lensing galaxy's mass distribution, but the measurement suggests there is evidence for some degree of anisotropy in the velocity dispersion of the galaxy bulge. Publication: The Astrophysical Journal Pub Date: February 1992 DOI: 10.1086/186288 Bibcode: 1992ApJ...386L..43F Keywords: Gravitational Lenses; Spiral Galaxies; Velocity Distribution; Astronomical Spectroscopy; Charge Coupled Devices; Galactic Bulge; Galactic Nuclei; Telescopes; Astrophysics; COSMOLOGY: GRAVITATIONAL LENSING; GALAXIES: KINEMATICS AND DYNAMICS full text sources ADS | data products SIMBAD (5) NED (5)
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