Investigation of the spectra of the gravitational lenses H 1413+117 and Q 2237+030.

Details Investigation of the spectra of the gravitational lenses H 1413+117 and Q 2237+030. Investigation of the spectra of the gravitational lenses H 1413+117 and Q 2237+030.

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996kpcb...12....7a&link_type=abstract

Kinematics Phys. Celest. Bodies, Vol. 12, No. 5, p. 7 - 11

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Gravitational Lenses: Spectra, Gravitational Lenses: Quasars, Gravitational Lenses: Velocities

Scientific paper

The spectra of the gravitational lenses H 1413+117 ("Clover Leaf") and Q 2237+030 ("Einstein Cross") obtained with a significant signal accumulation time are studied. The authors have found a new system of narrow absorption lines with a redshift of 0.31 in the H 1413+117 spectrum. It is likely to be related to a foreground cluster of galaxies. Another new system of narrow absorption lines with a redshift of 0.75 is likely to exist. Based on bidimensional spectroscopy of Q 2237+030, the authors estimated the velocity dispersion for stars in the lensing galaxy at different distances within 6 kpc from the center. The velocity dispersion at the center of the galaxy is found to be 280 km/s, and the mean dispersion within the region studied is 185 km/s.

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