Damped Lyα absorbers (DLAs) are a well-studied class of absorption line systems, and yet the properties of their host galaxies remain largely unknown. To investigate the origin of these systems, we have conducted an imaging survey of 32 quasar fields with intervening DLAs between z ~ 1.9 and 3.8, leveraging a technique that allows us to image galaxies at any small angular separation from the background quasars. In this paper, we present the properties of the targeted DLA sample, new imaging observations of the quasar fields, and the analysis of new and archival spectra of the background quasars.
Fumagalli, M., O'Meara, J., Xavier Prochaska, J., Kanekar, N., Wolfe, A. (2014). Directly imaging damped Lyα galaxies at z > 2-II. Imaging and spectroscopic observations of 32 quasar fields. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 444(2), 1282-1300 [10.1093/mnras/stu1512].
Directly imaging damped Lyα galaxies at z > 2-II. Imaging and spectroscopic observations of 32 quasar fields
Fumagalli M.
;
2014
Abstract
Damped Lyα absorbers (DLAs) are a well-studied class of absorption line systems, and yet the properties of their host galaxies remain largely unknown. To investigate the origin of these systems, we have conducted an imaging survey of 32 quasar fields with intervening DLAs between z ~ 1.9 and 3.8, leveraging a technique that allows us to image galaxies at any small angular separation from the background quasars. In this paper, we present the properties of the targeted DLA sample, new imaging observations of the quasar fields, and the analysis of new and archival spectra of the background quasars.
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