TY - JOUR
T1 - HETDEX Public Source Catalog 1—Stacking 50,000 Lyman Alpha Emitters
AU - Davis, Dustin
AU - Gebhardt, Karl
AU - Cooper, Erin Mentuch
AU - Bowman, William P.
AU - Garcia Castanheira, Barbara
AU - Chisholm, John
AU - Ciardullo, Robin
AU - Fabricius, Maximilian
AU - Farrow, Daniel J.
AU - Finkelstein, Steven L.
AU - Gronwall, Caryl
AU - Gawiser, Eric
AU - Hill, Gary J.
AU - Hopp, Ulrich
AU - House, Lindsay R.
AU - Jeong, Donghui
AU - Kollatschny, Wolfram
AU - Komatsu, Eiichiro
AU - Liu, Chenxu
AU - Niemeyer, Maja Lujan
AU - Saldana-Lopez, Alberto
AU - Saito, Shun
AU - Schneider, Donald P.
AU - Snigula, Jan
AU - Tuttle, Sarah
AU - Weiss, Laurel H.
AU - Wisotzki, Lutz
AU - Zeimann, Gregory
N1 - Publisher Copyright:
© 2023. The Author(s). Published by the American Astronomical Society.
PY - 2023/9/1
Y1 - 2023/9/1
N2 - We describe the ensemble properties of the 1.9 < z < 3.5 Lyman alpha emitters (LAEs) found in the HETDEX survey’s first public data release, HETDEX Public Source Catalog 1. Stacking the low-resolution (R ∼ 800) spectra greatly increases the signal-to-noise ratio (S/N), revealing spectral features otherwise hidden by noise, and we show that the stacked spectrum is representative of an average member of the set. The flux-limited, Lyα S/N restricted stack of 50,000 HETDEX LAEs shows the ensemble biweight average z ∼ 2.6 LAE to be a blue (UV continuum slope ∼ −2.4 and E(B - V) < 0.1), moderately bright (M UV ∼ −19.7) star-forming galaxy with strong Lyα emission (log L Lyα ∼ 42.8 and W λ (Lyα) ∼ 114 Å), and potentially significant leakage of ionizing radiation. The rest-frame UV light is dominated by a young, metal-poor stellar population with an average age of 5-15 Myr and metallicity of 0.2-0.3
AB - We describe the ensemble properties of the 1.9 < z < 3.5 Lyman alpha emitters (LAEs) found in the HETDEX survey’s first public data release, HETDEX Public Source Catalog 1. Stacking the low-resolution (R ∼ 800) spectra greatly increases the signal-to-noise ratio (S/N), revealing spectral features otherwise hidden by noise, and we show that the stacked spectrum is representative of an average member of the set. The flux-limited, Lyα S/N restricted stack of 50,000 HETDEX LAEs shows the ensemble biweight average z ∼ 2.6 LAE to be a blue (UV continuum slope ∼ −2.4 and E(B - V) < 0.1), moderately bright (M UV ∼ −19.7) star-forming galaxy with strong Lyα emission (log L Lyα ∼ 42.8 and W λ (Lyα) ∼ 114 Å), and potentially significant leakage of ionizing radiation. The rest-frame UV light is dominated by a young, metal-poor stellar population with an average age of 5-15 Myr and metallicity of 0.2-0.3
UR - https://www.scopus.com/pages/publications/85171168309
UR - https://www.scopus.com/pages/publications/85171168309#tab=citedBy
U2 - 10.3847/1538-4357/ace4c2
DO - 10.3847/1538-4357/ace4c2
M3 - Article
AN - SCOPUS:85171168309
SN - 0004-637X
VL - 954
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 209
ER -