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A Spectroscopic Survey of the Fields of 28 Strong Gravitational Lenses: The Redshift Catalog
- Publication Year :
- 2015
-
Abstract
- We present the spectroscopic redshift catalog from a wide-field survey of the fields of 28 galaxy-mass strong gravitational lenses. We discuss the acquisition and reduction of the survey data, collected over 40 nights of 6.5m MMT and Magellan time, employing four different multi-object spectrographs. We determine that no biases are introduced by combining datasets obtained with different instrument/spectrograph combinations. Special care is taken to determine redshift uncertainties using repeat observations. The redshift catalog consists of 9768 new and unique galaxy redshifts. 82.4% of the catalog redshifts are between z=0.1 and z=0.7, and the catalog median redshift is z=0.36. The data from this survey will be used to study the lens environments and line-of-sight structures to gain a better understanding of the effects of large scale structure on lens statistics and lens-derived parameters.<br />Comment: Accepted for publication in ApJS. All catalogs are available for download at this URL: http://www.astro.yale.edu/iva/#downloads
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1503.02074
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/0067-0049/219/2/29