The third image, the redshift of the lens, and new components of the gravitational lens 2016 + 112

D. P. Schneider, J. E. Gunn, E. L. Turner, C. R. Lawrence, J. N. Hewitt, M. Schmidt, B. F. Burke

Research output: Contribution to journalArticlepeer-review

Abstract

A third lensed image has been found in the gravitational lens system 2016+112. It is located near 2016+112 C, the strongest radio source in the system, and was detected by observations with the Palomar 5 m telescope in a narrowband filter centered on the Lyman α emission of the two previously known images. Resolved, low-surface-brightness companions of the two brighter images (A and B) were also discovered in the narrowband image. Simple model-independent calculations indicate M ≥ 1.2x1012h-1M_sun; and M/LB ≥ 21 h(M_sun;/L_sun;) for the lensing object. Furthermore, this mass must be concentrated within a circle of radius 8.3 h-1kpc, or the total lens mass must greatly exceed this lower bound.
Original languageEnglish (US)
Pages (from-to)991-997
JournalAstronomical Journal
Volume91
DOIs
StatePublished - May 1 1986

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