Deeper than DEEP: A Spectroscopic Survey of $z>3$ Lyman-$\alpha$ Emitters in the Extended Groth Strip

Stephanie M. Urbano Stawinski; M. C. Cooper; Steven L. Finkelstein; Intae Jung; Pablo G. Pérez-González; Caitlin M. Casey; Olivia R. Cooper; Nimish P. Hathi; Benne W. Holwerda; Anton M. Koekemoer; Vital Fernández; Rebecca L. Larson; Ray A. Lucas; L. Y. Aaron Yung

arXiv · 2307.04782

Deeper than DEEP: A Spectroscopic Survey of $z>3$ Lyman-$\alpha$ Emitters in the Extended Groth Strip

Stephanie M. Urbano Stawinski·M. C. Cooper·Steven L. Finkelstein·Intae Jung·Pablo G. Pérez-González·Caitlin M. Casey·Olivia R. Cooper·Nimish P. Hathi·Benne W. Holwerda·Anton M. Koekemoer·Vital Fernández·Rebecca L. Larson·Ray A. Lucas·L. Y. Aaron Yung

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Abstract

We present a spectroscopic survey of Ly$\alpha$ emitters in the Extended Groth Strip (EGS) field, targeting the regime near the Epoch of Reionization. Using Keck/DEIMOS, we observed 947 high-$z$ candidates with photometric redshifts from 3 $< z_\text{phot} <$ 7 and down to an $H$-band (HST/WFC3 F160W) magnitude limit of < 27.5. Observations were taken over the course of 8 nights, with integration times ranging from 4 to 7.8 hours. Our survey secured 137 unique redshifts, 126 of which are Ly$\alpha$ emitters at 2.8 $< z <$ 6.5 with a mean redshift of $\overline{z} = 4.3$. We provide a comprehensive redshift catalog for our targets, as well as the reduced one- and two- dimensional spectra for each object. These observations will provide an important auxiliary dataset for the JWST Directors Discretionary Early Release Science (DD-ERS) program the Cosmic Evolution Early Release Science Survey (CEERS), which recently completed near- and mid-IR imaging and spectroscopy of galaxies in the EGS field.

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Stephanie M. Urbano Stawinski, M. C. Cooper, Steven L. Finkelstein, Intae Jung, Pablo G. Pérez-González, Caitlin M. Casey, Olivia R. Cooper, Nimish P. Hathi, Benne W. Holwerda, Anton M. Koekemoer, Vital Fernández, Rebecca L. Larson, Ray A. Lucas, L. Y. Aaron Yung. 2023-07-10. Deeper than DEEP: A Spectroscopic Survey of $z>3$ Lyman-$\alpha$ Emitters in the Extended Groth Strip. https://arxiv.org/abs/2307.04782

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