Near-infrared images of MG 1131+0456 with the W. M. Keck telescope: Another dusty gravitational lens?

Abstract

view Abstract Citations (25) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Near-Infrared Images of MG 1131+0456 with the W. M. Keck Telescope: Another Dusty Gravitational Lens? Larkin, J. E. ; Matthews, K. ; Lawrence, C. R. ; Graham, J. R. ; Harrison, W. ; Jernigan, G. ; Lin, S. ; Nelson, J. ; Neugebauer, G. ; Smith, G. ; Soifer, B. T. ; Ziomkowski, C. Abstract Images of the gravitational lens system MG 1131 + 0456 taken with the near-infrared camera on the W. M. Keck telescope in the J and K_S_ bands show that the infrared counterparts of the compact radio structure are exceedingly red, with J - K > 4.2 mag. The J image reveals only the lensing galaxy, while the K_S_ image shows both the lens and the infrared counterparts of the compact radio components. After subtracting the lensing galaxy from the K_S_ image, the position and orientation of the compact components agree with their radio counterparts. The broad-band spectrum and observed brightness of the lens suggest a giant galaxy at a redshift of ~0.75, while the color of the quasar images suggests significant extinction by dust in the lens. There is a significant excess of faint objects within 20" of MG 1131+0456. Depending on their mass and redshifts, these objects could complicate the lensing potential considerably. Publication: The Astrophysical Journal Pub Date: January 1994 DOI: 10.1086/187150 Bibcode: 1994ApJ...420L...9L Keywords: Cosmic Dust; Galaxies; Gravitational Lenses; Infrared Astronomy; Interstellar Extinction; Quasars; Red Shift; Astronomical Photometry; Infrared Imagery; Infrared Photography; Reflecting Telescopes; Astronomy; ISM: DUST; EXTINCTION; GALAXIES: QUASARS: INDIVIDUAL ALPHANUMERIC: MG 1131; 0456; GALAXIES: INTERACTIONS; COSMOLOGY: GRAVITATIONAL LENSING full text sources ADS | data products SIMBAD (3) NED (1)