A Search for Lensed Ly alpha Emitters within the Early HETDEX Data Set

Laseter, Isaac H.; Finkelstein, Steven L.; Bagley, Micaela J.; Davis, Dustin M.; Gebhardt, Karl; Gronwall, Caryl; Ciardullo, Robin; Zeimann, Gregory R.; Cooper, Erin Mentuch und Farrow, Daniel (2022): A Search for Lensed Ly alpha Emitters within the Early HETDEX Data Set. In: Astrophysical Journal, Bd. 940, Nr. 1, 9

Abstract

The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a large-volume spectroscopic survey without preselection of sources, searching similar to 540 deg(2) for Ly alpha emitting galaxies (LAEs) at 1.9 < z < 3.5. Taking advantage of such a wide-volume survey, we perform a pilot study using early HETDEX data to search for lensed Ly alpha emitters (LAEs). After performing a proof of concept using a previously known lensed LAE covered by HETDEX, we perform a search for previously unknown lensed LAEs in the HETDEX spectroscopic sample. We present a catalog of 26 potential LAEs lensed by foreground, red, non-star-forming galaxies at z similar to 0.4-0.7. We estimate the magnification for each candidate system, finding 12 candidates to be within the strong lensing regime (magnification mu > 2). Follow-up observations of these potential lensed LAEs have the potential to confirm their lensed nature and explore these distant galaxies in more detail.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0004-637X
• Sprache: Englisch