SPHEREx data confirm 77 new luminous heavily reddened quasars at 1.5<z<3.9 that are hot-dust poor relative to unobscured quasars, supporting a blow-out feedback phase.
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Spectroscopy of a z=3.409 quasar detects three freely expanding outflows with radial N/C gradients, indicating a transition from ejective to regulative feedback.
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Hidden Monsters with SPHEREx I: A goldmine for heavily reddened quasars at cosmic noon
SPHEREx data confirm 77 new luminous heavily reddened quasars at 1.5<z<3.9 that are hot-dust poor relative to unobscured quasars, supporting a blow-out feedback phase.
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Radial gradients revealed by mutliscale outflows from down-the-barrel spectroscopy toward a quasar at redshift 3.4
Spectroscopy of a z=3.409 quasar detects three freely expanding outflows with radial N/C gradients, indicating a transition from ejective to regulative feedback.