JADES - NIRSpec - Data Release 4 Emission line flux tables ------------------------ RELEASE: v5.1.1 DATE: 1 October 2025 Description: Table of redshifts and emission line fluxes from JADES NIRSpec observations. Further details can be found in the JADES NIRSpec Data Release 4 Paper I (Curtis-Lake et al. 2025) and Paper II (Scholtz, Carniani et al. 2025). This table (Combined_DR4_external.fits) contains the following extensions: ##1: Obs_info ##2: PRISM_5pix ##3: PRISM_3pix ##4: R1000_5pix ##5: R1000_3pix The extensions 2 & 3 reports fluxes of emission lines measured from low-resolution CLEAR/PRISM observations. The extensions 4 & 5 reports emission line fluxes measured from medium-resolution (R~1000) F070LP/G140M, F170LP/G235Mand F290LP/G395M observations. Both tables also report redshifts (measured from the combined low- and medium-resolution data), and information about the targeting and observations. A more detailed description of the columns is given below. More details can be found in Scholtz et al. 2025 ----------------------- Note on target IDs NIRSpec_ID values contain duplicates due to the fact that the input photometric catalog was updated frequently throughout the survey. Different targets may share the same NIRSpec_ID, even including in the same observing program (PID). To match galaxies to their spectra, the recommended procedure is to use both the NIRSpec_ID and TIER columns or use the Unique_ID which is unique to each target. Repeat observations of the same target may or may not have the same NIRSpec_ID and Unique_ID. NIRCam_ID values are unique, but not all targets have a NIRCam_ID. ----------------------- ----------------------- Extension 1: Obs_info Unique_ID : Unique ID for each ID/Tier combination (see note on target IDs) PID : Program ID of the observations TIER : Used to uniquely identify observations (see note on target IDs) TIER_old : Old verrsion of TIER used in DR1 and DR3. Used to uniquely identify observations (see note on target IDs) NIRSpec_ID : ID used in the NIRSpec input target selection catalog (see note on target IDs) NIRCam_ID_DR3 : ID of the closest match within 0.2" in the JADES NIRCam data release catalogue (Robertson et al. 2024). Values of -9999 mean that no source exists within 0.2" (due to re-segmentation of the images). Values of -1111 indicate targets outside the NIRCam footprint. NIRCam_ID_DR5 : ID of the closest match within 0.2" in the JADES NIRCam data release 5 catalogue (Johnson and JADES collaboration at al.) ObsDate : Date of NIRSpec-MSA observations RA_TARG : Right Ascension of target as used for target allocation and pathloss correction Dec_TARG : Declination of target as used for target allocation and pathloss correction x_offset : Intra-shutter offset of the source in arcseconds, averaged over the multiple pointings y_offset : Intra-shutter offset of the source in arcseconds, averaged over the multiple pointings Field : A string denoting the target field. GSa : Selection method used for GOODS-S field GSb : Selection method used for GOODS-S field PC_empt : Priority class within empt software Priority : Priority class in target assignment process oddball_source : Source catalogue used for oddballs PC_eMPT_pre_oddball : Priority class within empt software before it was selected as oddball priority_pre_oddball: Priority class in target assignment process before it was selected as oddball F444W_gold_DR3 : Gold sample based on F444W from DR3 photometry UV_gold_DR3 : Gold sample based on UV magnitude from DR3 photometry F444W_gold_DR5_beta: Gold sample based on F444W from DR5 beta photometry UV_gold_DR5_beta: Gold sample based on UV magnitude from DR5 beta photometry assigned_Prism : True if source observed with CLEAR/PRISM, False otherwise assigned_G140M : True if source observed with F070LP/G140M, False otherwise assigned_G235M : True if source observed with F170LP/G235M, False otherwise assigned_G395M : True if source observed with F290LP/G395M, False otherwise assigned_G395H : True if source observed with F290LP/G395H, False otherwise nDither_Pr : Number of dithers in CLEAR/PRISM nDither_Gr : Number of dithers in gratings nInt_Prism : Number of integrations (nods and dithers) for the CLEAR/PRISM observations. nInt_G140M : Number of integrations (nods and dithers) for the F070LP/G140M observations. nInt_G235M : Number of integrations (nods and dithers) for the F170LP/G235M observations. nInt_G395M : Number of integrations (nods and dithers) for the F290LP/G395M observations. nInt_G395H : Number of integrations (nods and dithers) for the F290LP/G395H observations. tExp_Prism : Total exposure time for the CLEAR/PRISM observations [s] tExp_G140M : Total exposure time for the F070LP/G140M observations [s] tExp_G235M : Total exposure time for the F170LP/G235M observations [s] tExp_G395M : Total exposure time for the F290LP/G395M observations [s] tExp_G395H : Total exposure time for the F290LP/G395H observations [s] z_Spec : Best spectroscopic redshift derived from NIRSpec observations z_Spec_flag : Redshift quality flag: A - highly robust, S/N>5 emission lines in R~1000 data B - highly robust, S/N>5 emission lines in Prism/Clear C - secure, visually identified from spectral breaks and/or low S/N emission lines D - tentative redshifts E - no redshift z_R1000 : Redshift determined from R1000 observations z_R1000n : Number of emission lines in R1000 used to derive the redshift z_PRISM : Redshift from PRISM observations [mag] MUV : Absolute UV magnitude measured from PRISM MUV_u : upper error on Absolute UV [mag] MUV_l : lower error on Absolute UV [mag] ----------------------- Extensions 2 & 3: CLEAR/PRISM from 3 and 5 pixel extractions ----------------------- Description of columns: ----------------------- Unique_ID : Unique ID for each ID/Tier combination (see note on target IDs) PID : Program ID of the observations TIER : Used to uniquely identify observations (see note on target IDs) TIER_old : Old verrsion of TIER used in DR1 and DR3. Used to uniquely identify observations (see note on target IDs) NIRSpec_ID : ID used in the NIRSpec input target selection catalog (see note on target IDs) NIRCam_ID : ID of the closest match within 0.2" in the JADES NIRCam data release catalogue (Robertson et al. 2024). Values of -9999 mean that no source exists within 0.2" (due to re-segmentation of the images). Values of -1111 indicate targets outside the NIRCam footprint. z_PRISM : PRISM redshift [LineID]_flux : Measured emission line flux from the Prism/Clear spectrum in units of x10^-20 erg s-1 cm-2 (See list of emission lines below) [LineID]_err : Uncertainty on measured emission lines flux Blnd_[LineIDs]_flux : Total fluxes measured for blended complexes Blnd_[LineIDs]_err : Uncertainty on total flux measured for blended complexes ---------------------------------------------------------------------- Disambiguation of emission line and blend labels in Prism/Clear table: ---------------------------------------------------------------------- C4_1549 : CIV 1548,1551 Blnd_He2_O3_1650 : Blend of HeII 1640 + OIII]1660,1666 C3_1907 : CIII] 1907,1909 Mg2_2796 : MgII 2795,2803 O2_3727 : [OII] 3726,3729 Ne3_3869 : [NeIII] 3869 Ne3_3968 : [NeIII] 3968 HD_4102 : H-delta HG_4340 : H-gamma, where this is not blended with [OIII] 4363 O3_4363 : [OIII] 4363, where this is not blended with H-gamma Blnd_HG_O3 : Blend of H-gamma + [OIII] 4363 HB_4861 : H-beta, where this is not blended with [OIII] 4959 O3_4959 : [OIII] 4959, where this is not blended with [OIII] 5007 O3_5007 : [OIII] 5007, where this is not blended with [OIII] 4959 Blnd_HB_O3_5007d : Blend of H-beta + [OIII] 4959 + [OIII] 5007 O3_5007d : Blend of [OIII] 4959 + 5007, where not blended with H-beta He1_5875 : HeI 5875 O1_6300 : [OI] 6300 HA_6563 : Single component which is a blend of H-alpha and [NII] 6584 S2_6733d : Blend of [SII] 6718 + 6733, where not blended with H-alpha Blnd_HA_N2_S2 : Blend of H-alpha + [NII] 6584 + [SII] 6718 + 6733 He1_7065 : HeI 7065 S3_9069 : [SIII] 9069 S3_9532 : [SIII] 9532 PaD_10049 : Pa-delta He1_10829 : HeI 10829 PaG_10938 : Pa-gamma PaB_12818 : Pa-beta PaA_18751 : Pa-alpha General words on using reported Prism emission line fluxes: - Which lines are blended changes as a function of redshift. For example, above z>5.3, H-beta, [OIII]4959, [OIII]5007 are well separated and reported independently. Between 25 emission lines in the R~1000 grating spectra of this object (if applicable). z_R1000 : number of detected emission lines used to derived the R1000 redshift [LineID]_flux : Measured emission line flux from the R~1000 spectra in units of x10^-20 erg s-1 cm-2. (See list of emission lines below) [LineID]_err : Uncertainty on measured emission lines flux [LineID]_SNR : SNR of the emission line measured [LineID]_filter: Grating/filter combination used to measure the flux. Note: There is typically spectral overlap between the G140M/F070LP and G235M/F170LP spectra and the G235M/F170LP and G395M/F290LP spectra. In cases where are prominent emission line falls in an overlapping region (and thus detected in two independent observations), we une the lowest-resolution observation (reddest grating) which has generally higher S/N. ----------------------------------------------------------- Disambiguation of emission line labels in the R~1000 table: ----------------------------------------------------------- C4_1549 : CIV 1548,1551 * C3_1907 : CIII] 1907,1909 * He2_1640 : HeII 1640 O3_1666 : OIII] 1660,1666 * O2_3727 : [OII] 3726, 3729 * Ne3_3869 : [NeIII] 3869 Ne3_3968 : [NeIII] 3968 HD_4102 : H-delta HG_4340 : H-gamma O3_4363 : [OIII] 4363 HB_4861 : H-beta O3_4959 : [OIII] 4959 O3_5007 : [OIII] 5007 He1_5875 : HeI 5875 O1_6300 : [OI] 6300 HA_6563 : H-alpha N2_6584 : [NII] 6584 S2_6718 : [SII] 6718 S2_6733 : [SII] 6733 S3_9069 : [SIII] 9069 S3_9532 : [SIII] 9532 PaD_10049 : Pa-delta He1_10829 : HeI 10829 PaG_10938 : Pa-gamma PaB_12818 : Pa-beta PaA_18751 : Pa-alpha * These doublets are not resolved into individual components even in these R~1000 observations.