Morphology of the triple QSO PG1115 + 08

Details Morphology of the triple QSO PG1115 + 08 Morphology of the triple QSO PG1115 + 08

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.287..416h&link_type=abstract

Nature, vol. 287, Oct. 2, 1980, p. 416, 417. USAF-supported research.

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10

Astronomical Photography, Quasars, Stellar Structure, Image Intensifiers, Morphology, Point Sources, Telescopes

Scientific paper

Observations of the morphology, colors and neighborhood of the triple quasar PG 1115+08 are presented. The Multi-Mirror Telescope with an intensified television camera was used in a search for evidence of an intervening galaxy in a deep image or as a color difference between components, and for structure in the three images. Analysis of the images obtained indicates the two companion images to appear as unresolved point sources, while the primary image is most likely two point sources 0.5 arcsec apart. Data, obtained in the B, V and I bands, are consistent with all objects having the same color, and reveal no other objects brighter than a V magnitude of 21 within a radius of 5 arcsec from the primary image. It is concluded that if there is an intervening galaxy present, it must either be fainter than this limit, or lie well within 1 arcsec of one of the components.

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