A SPECTROSCOPIC SURVEY of the FIELDS of 28 STRONG GRAVITATIONAL LENSES

Ivelina G. Momcheva, Kurtis A. Williams, Richard J. Cool, Charles R. Keeton, Ann I. Zabludoff

Research output: Contribution to journalArticle

16 Scopus citations

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 6.5 m MMT and Magellan time, employing four different multiobject spectrographs. We determine that no biases are introduced by combining data sets obtained with different telescope and spectrograph combinations. Special care is taken to determine redshift uncertainties using repeat observations. The redshift catalog consists of 9,768 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. 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.

Original languageEnglish (US)
Article number29
JournalAstrophysical Journal, Supplement Series
Volume219
Issue number2
DOIs
StatePublished - Aug 1 2015

Keywords

  • catalogs
  • galaxies: distances and redshifts
  • galaxies: general
  • gravitational lensing: strong
  • surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'A SPECTROSCOPIC SURVEY of the FIELDS of 28 STRONG GRAVITATIONAL LENSES'. Together they form a unique fingerprint.

  • Cite this