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B3 0003+387: AGN-Marked Large-Scale Structure at Redshift 1.47?* **

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D. Thompson1, O. Aftreth2 and B. T. Soifer1,3

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We present evidence for a significant overdensity of red galaxies, as much as a factor of 14 over comparable field samples, in the field of the z = 1.47 radio galaxy B3 0003+387. The colors and luminosities of the brightest red galaxies are consistent with their being at z > 0.8. The radio galaxy and one of the red galaxies are separated by 5'' and show some evidence of a possible interaction. However, the red galaxies do not show any strong clustering around the radio galaxy or around any of the brighter red galaxies. The data suggest that we are looking at a wall or sheet of galaxies, possibly associated with the radio galaxy at z = 1.47. Spectroscopic redshifts of these red galaxies will be necessary to confirm this large-scale structure.


Footnote
*  This paper uses data obtained at the WIYN Observatory, a joint facility of the University of Wisconsin-Madison, Indiana University, Yale University, and the National Optical Astronomy Observatories.
Footnote
**  Based in part on observations obtained at the W. M. Keck Observatory.
Keywords

galaxies: clusters: general; galaxies: distances and redshifts; large-scale structure of universe


Dates

Issue 5 (2000 November)

Received 2000 June 22, accepted for publication 2000 July 13



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