GO-7935 (EMERALD)
Efficient Measurement of the Emergence Rate of AGN in Legacy Deep Field
- PI: Fengwu Sun (Harvard University)
- Instrument/Mode: NIRSpec MOS, G395M/F290LP
- Sample: 842 galaxies at z = 4-9 in GOODS-N
- External Allocation: 37.1 hours
EMERALD+DIVER: AGN and UV Spectroscopy in the Early Universe
EMERALD+DIVER combines two JWST Cycle-4 GO programs: GO-7935 (EMERALD) and GO-8018 (DIVER).
The merged program keeps the original EMERALD science scope and adds DIVER deep UV spectroscopy for a joint analysis framework.
Program IDs
GO-7935 + GO-8018
Total External Allocation
110.2 Hours
GO-8018 (DIVER)
DIVER: Deep Insights into UV Spectroscopy at the Epoch of Reionization
- PI: Xiaojing Lin (Tsinghua University)
- Instrument/Modes: NIRSpec MOS, G140M/F070LP and PRISM/CLEAR
- Sample: over 140 galaxies at z = 5-9 in GOODS-N
- External Allocation: 73.1 hours
Instrument Modes and Time Allocation
- GO-7935: NIRSpec MOS G395M/F290LP, 6 masks, about 4.9 h on-source per mask (about 29.4 h on-source total).
- GO-8018 mode A: NIRSpec MOS G140M/F070LP, 2 masks, about 20.6 h on-source per mask (41.2 h total).
- GO-8018 mode B: NIRSpec MOS PRISM/CLEAR, 5 masks, about 8403.2 s (about 2.33 h) on-source per mask (11.7 h total).
Program Snapshot
EMERALD+DIVER combines rest-optical and UV diagnostics to improve constraints on AGN demographics, ionization conditions, and chemical enrichment in the epoch of reionization.
Data Access
Team members can access target metadata, ancillary products, and download links through the portal.