摘要: We present Ly$\alpha$ and ultraviolet-continuum (UV) luminosity functions
(LFs) of galaxies and active galactic nuclei (AGN) at $z=2.0-3.5$ determined by
the un-targetted optical spectroscopic survey of the Hobby-Eberly Telescope
Dark Energy Experiment (HETDEX). We combine deep Subaru imaging with HETDEX
spectra resulting in $11.4$ deg$^2$ of fiber-spectra sky coverage, obtaining
$18320$ galaxies spectroscopically identified with Ly$\alpha$ emission, $2126$
of which host type 1 AGN showing broad (FWHM$~>1000$ km s$^{-1}$) Ly$\alpha$
emission lines. We derive the Ly$\alpha$ (UV) LF over 2 orders of magnitude
covering bright galaxies and AGN in $\log
L_\mathrm{Ly\alpha}/\mathrm{[erg~s^{-1}]}=43.3-45.5$ ($-27-21$) type 1
AGN increases from $z\sim2$ to $z\sim0$ as opposed to the evolution of bright
($M_\mathrm{UV}<-21$) type 1 AGN, suggesting the AGN downsizing in the
rest-frame UV luminosity.
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分类：
天文学
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天文学
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引用：
ChinaXiv:202303.05343
(或此版本
ChinaXiv:202303.05343V1)
DOI:10.12074/202303.05343V1
CSTR:32003.36.ChinaXiv.202303.05343.V1
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科创链TXID：
c23dd4e9-66d8-4a5b-adf3-00f91c196fd1
- 推荐引用方式：
Yechi Zhang,Masami Ouchi,Karl Gebhardt,Erin Mentuch Cooper,Chenxu Liu,Dustin Davis,Donghui Jeong,Daniel J. Farrow,Steven L. Finkelstein,Eric Gawiser,Gary J. Hill,Yuichi Harikane,Ryota Kakuma,Viviana Acquaviva,Caitlin M. Casey,Maximilian Fabricius,Ulrich Hopp,Matt J. Jarvis,Martin Landriau,Ken Mawatari,Shiro Mukae,Yoshiaki Ono,Nao Sakai,Donald P. Schneider.First HETDEX Spectroscopic Determinations of Ly$\alpha$ and UV
Luminosity Functions at $z=2-3$: Bridging a Gap Between Faint AGN and Bright
Galaxies.中国科学院科技论文预发布平台.[ChinaXiv:202303.05343V1]
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