HE 0435-1223: A wide separation quadruple QSO and gravitational lens
نویسندگان
چکیده
منابع مشابه
Integral-field spectrophotometry of the quadruple QSO HE 0435−1223: Evidence for microlensing
We present the first spatially resolved spectroscopic observations of the recently discovered quadruple QSO and gravitational lens HE 0435−1223. Using the Potsdam Multi-Aperture Spectrophotometer (PMAS), we show that all four QSO components have very similar but not identical spectra. In particular, the spectral slopes of components A, B, and D are indistinguishable, implying that extinction du...
متن کاملThe Lens Redshift and Group Environment for He 0435 - 1223
The redshift of the galaxy lensing HE 0435−1223 is 0.4546 ± 0.0002, based on observations obtained with the Low Dispersion Survey Spectrograph 2 (LDSS2) on the Magellan Consortium’s 6.5 m Clay telescope. Hubble Space Telescope/ACS observations of the system also reveal a spiral-rich group of 10 galaxies within 40 of the elliptical lensing galaxy. The redshifts for two of these galaxies were mea...
متن کامل0 v 1 2 A ug 2 00 5 The Time Delays of Gravitational Lens HE 0435 – 1223 : An Early - Type Galaxy With a Rising Rotation Curve
We present Hubble Space Telescope images and 2 years of optical photometry of the quadruple quasar HE 0435–1223. The time delays between the intrinsic quasar variations are ∆t AD = −14.37
متن کاملGravitational Quadruple Lens Produce 17 images ?
Gravitational lensing can be by a faint star, a trillion stars of a galaxy, or a cluster of galaxies, and this poses a familiar struggle between particle method and mean field method. In a bottom-up approach, a puzzle has been laid on whether a quadruple lens can produce 17 images. The number of images is governed by the gravitational lens equation, and the equation for n-tuple lenses suggests ...
متن کاملA new quadruple gravitational lens system: CLASS B01281437
1 University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL 2 Kapteyn Astronomical Institute, Postbus 800, NL-9700 AV Groningen, the Netherlands California Institute of Technology, Pasadena, CA 91125, USA Netherlands Foundation for Research in Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands 5 National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2002
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20021213