Matches in SemOpenAlex for { <https://semopenalex.org/work/W4362677237> ?p ?o ?g. }
- W4362677237 endingPage "361" @default.
- W4362677237 startingPage "350" @default.
- W4362677237 abstract "The census of obscured quasar populations is incomplete, and remains a major unsolved problem, especially at higher redshifts, where we expect a greater density of galaxy formation and quasar activity. We present Gemini GNIRS near-infrared spectroscopy of 24 luminous obscured quasar candidates from the Sloan Digital Sky Survey's Stripe 82 region. The targets were photometrically selected using a WISE/W4 selection technique that is optimized to identify IR-bright and heavily-reddened/optically-obscured targets at $z>1$. We detect emission lines of ${rm Halpha}$, ${rm Hbeta}$, and/or ${rm[ O~III]}$ in 23 sources allowing us to measure spectroscopic redshifts in the range $1<z<3$ with bolometric luminosities spanning $L=10^{46.3}-10^{47.3}$ erg s$^{-1}$. We observe broad $10^3-10^4$ km s$^{-1}$ Balmer emissions with large ${rm Halpha}/{rm Hbeta}$ ratios, and we directly observe a heavily reddened rest-frame optical continuum in several sources, suggesting high extinction ($A_Vsim7-20$ mag). Our observations demonstrate that such optical/infrared photometric selection successfully recovers high-redshift obscured quasars. The successful identification of previously undetected red, obscured high-redshift quasar candidates suggests that there are more obscured quasars yet to be discovered." @default.
- W4362677237 created "2023-04-07" @default.
- W4362677237 creator A5007343371 @default.
- W4362677237 creator A5018266021 @default.
- W4362677237 creator A5035018020 @default.
- W4362677237 creator A5035351045 @default.
- W4362677237 creator A5039806724 @default.
- W4362677237 creator A5062742011 @default.
- W4362677237 date "2023-04-06" @default.
- W4362677237 modified "2023-10-18" @default.
- W4362677237 title "Infrared spectroscopic confirmation of <i>z</i> ∼ 2 photometrically selected obscured quasars" @default.
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