Infrared and visible photometry of the gravitational lens systems 2237 + 030
نویسندگان
چکیده
منابع مشابه
Stars and Dark Matter in the Spiral Gravitational Lens 2237 +
We construct a mass model for the spiral lens galaxy 2237+0305, at redshift zl=0.04, based on gravitational-lensing constraints, HI rotation, and new stellarkinematic information, based on data taken with the ESI spectrograph on the 10m Keck-II Telescope. High resolution rotation curves and velocity dispersion profiles along two perpendicular directions, close to the major and minor axes of the...
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High angular resolution PC1 images of the gravitational lens systems HE 1104−1805 and J03.13 are presented. Using a method described in Remy et al. (1997a), optimal TinyTim PSFs are constructed to fit at best the lensed pointlike components. The derived photometry of the GL components and the detection of the lens galaxy for HE 1104-1805 are discussed. Textbook case FOS spectra of J03.13 A and ...
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Images of the multiple-component radio source B1422 + 231 at 2.2 pm show the structure of this source to be essentially the same at radio and infrared frquencies. The most natural explanation for this achromatic structure is gravitational lensing.
متن کاملThe Optical Gravitational Lensing Experiment Monitoring of Qso 2237+0305 *
We present results from 2 years of monitoring of Huchra's lens (QSO 2237+0305) with the 1.3 m Warsaw telescope on Las Campanas, Chile. Photometry in the V band was done using a newly developed method for image subtraction. Reliable subtraction without Fourier division removes all complexities associated with the presence of a bright lensing galaxy. With positions of lensed images adopted from H...
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We have studied the mass distribution in the lensing galaxy 2237+0305 using constraints from both gravitational lensing and photometric and spectroscopic observations. We find that with sufficient dynamical information we can constrain the mass-to-light ratio of the luminous components and determine the dynamical contribution of the disk. In addition, future observations should allow us to plac...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1991
ISSN: 0004-637X,1538-4357
DOI: 10.1086/170292