Mission Overview
The JWST Advanced Deep Extragalactic Survey (JADES)
Primary Investigator: Daniel Eisenstein, Nora Luetzgendorf
HLSP Authors: Marcia Rieke, Brant Robertson, Sandro Tacchella, Christopher Willmer, Ben Johnson, Stefano Carniani, Andy Bunker, Chris Willott, Alex Cameron, Emma Curtis-Lake
Released: 2023-06-06
Updated: 2023-06-15
Primary Reference(s): Bunker et al. 2023, Eisenstein et al. 2023, Hainline et al. 2023, Rieke, M. et al. 2023
DOI: 10.17909/8tdj-8n28
Citations: See ADS Metrics
Read Me, Spectroscopic Catalogs Read Me, Photometric Catalog Extension Read Me
Source Data:
Figure 1: The initial release area. Please see “FITSMap” for browsing individual mosaics and linked photometry.
Figure 2: The heavy blue lines indicate the NIRCam field-of-view with the black box outlining the Ultra Deep Field. The NIRSpec four MSA quadrants are outlined in blue and targeted objects for the first data release are indicated by green circles.
Figure 3: A heavily obscured spiral shown on the left in a JADES F090W, F200W, and F444W composite. The image on the right is the HST ACS F814W image.
Figure 4: Sample R~100 Clear/Prism spectra from the first data release (Bunker et al. 2023).
Figure 5: Example preview image of JADE clear/prism spectra, included for all sources in the data release.
Figure 6: Logo for the JADES survey.
Overview
The JWST Advanced Deep Survey (JADES) is the largest deep survey program that will be executed in the first few of years of operation of JWST. Three GTO Teams (NIRCam, NIRSpec, MIRI-U.S.) have combined time to produce a survey which will ultimately cover over 100 square arc minutes from 0.7 to 5 microns and 10 square arc minutes at 7.7 microns and produce thousands of galaxy spectra. The imaging data presented here is the first release from the survey and covers the “deep” portion with imaging acquired in September - October 2022. The area covered is approximately 25 square arc minutes with exposure times per filter ranging from ~14,000 to ~60,000 seconds. These data provide large galaxy samples for studying galaxy evolution from z~1 to at least z~13, and also to study the full diversity of galaxy characteristics. A catalog with photometry and photometric redshifts is included with this release. Additionally, “FITSMap” provides a multicolor image browser and links to the photometry.
|
Sensitivities in Deepest Areas of First Release Mosaics Measured in 0.3” Diameter Apertures (Rieke et al. 2023) |
|||||
|---|---|---|---|---|---|
|
Filter |
1st Release 5-sigma (nJy) |
Filter |
1st Release 5-sigma (nJy) |
Filter |
1st Release 5-sigma (nJy) |
|
F090W |
5.8 |
F200W |
4.4 |
F356W | 3.6 |
|
F115W |
4.3 |
F277W |
3.4 |
F410M | 5.7 |
|
F150W |
4.6 |
F335M | 5.9 | F444W | 4.5 |
Figures 1 and 2 display the first data release area and footprints. Figure 3 shows an example of a galaxy with a photometric redshift of 1.78 that is nearly invisible to HST ACS but is seen as a well-resolved but obscured spiral to JWST.
The NIRSpec spectra presented as part of this release comprise a sample selected largely from objects detected using HST imaging of the ultra deep field (UDF). Bunker et al. 2023 describes the process of prioritizing objects to be placed on slits. About 250 galaxies were targeted using the 0.6 to 5.3 micron prism with up to 28 hours of exposure. Most of these objects were also targeted using all three R~1000 gratings and the longest wavelength R~2700 grating with up to 7 hours of exposure.
Figure 4 includes sample R~100 Clear/Prism spectra from the first data release (Bunker et al. 2023). Figure 5 displays an example preview image for a Clear/Prism spectra, which are included with this data release.
Update 06/15/23: NIRCam detection and segmentation images included with the JADES release (see below for more information).
Data Products
Images
NIRCam images are named according to the following convention:
hlsp_jades_jwst_nircam_<region>_<filter>_<version>_<exten>.fits
where:
- <region> is the imaging target region ("goods-south-deep").
- <filter> is the filter used.
- <version> is the data release version.
- <exten> is the file extension, including:
- drz : Image mosaics with pixel scale of 0.030”
- detection: "Detection" image constructed from long wavelength data and used to find objects on all the other images (see Rieke et al. 2023).
- segmentation: "Segmentation" image (based closely on Source Extractor) used to assign pixels to objects for the photometric measurements (see Rieke et al. 2023).
Spectra
The spectra in this first release are organized into five collections with each collection containing the spectra from a particular NIRSpec filter/disperser combination, and are named according to the following convention:
hlsp_jades_jwst_nirspec_<id-no>_<disperser-filter>_<version>_<extraction-type>.fits
where:
- <id-no> is a combination of the survey name ‘goods-s-deephst’ and the identification number in the input catalog. Identification numbers with leading zeros were in the original HST-based target catalog, whereas those starting with 1 were late additions from the JADES NIRCam data.
- <disperser-filter> is the combination of disperser and filter used.
- <version> is the data release version.
- <extraction-type> is the type of spectral extraction, one of "s2d" (2D spectra) or "x1d" (1D spectra).
An example spectrum file name is: hlsp_jades_jwst_nirspec_goods-s-deephst-10105275_clear-prism_v1.0_s2d.fits
Preview png files of the clear-prism spectra (1D and 2D on the same plot) are included, and named according to the following convention:
hlsp_jades_jwst_nirspec_<id-no>_<disperser-filter>_<version>_preview.png
Photometric Catalogs
The photometric catalog contains photometry for over 45,000 sources. Photometry is given in both PSF-matched (denoted by conv) and non-convolved formats. Kron photometry (denoted by "kron") is presented as well as photometry in seven circular apertures (denoted by "circ"). See the Photometric Catalog Extension Readme for more details, including detailed descriptions of table extensions. The catalog includes photometry from the JEMS program (coming soon).
Two spectroscopic catalogs are included in this release. These catalogs provide target information, redshifts and line fluxes as measured from the low-resolution prism and medium-resolution gratings. See the Spectroscopic Catalogs Readme for more details.
hlsp_jades_jwst_<instrument>_<region>_<type>_<version>_catalog.fits
where:
- <instrument> is the instrument used, one of "nircam" or "nirspec".
- <region> is the imaging target region (one of "goods-south-deep" or "goods-south-deephst").
- <type> is the type of catalog (one of "photometry", "clear-prism-line-fluxes", "gratings-line-fluxes").
- <version> is the data release version.
Data file types:
| _drz.fits | NIRCam images |
| _detection.fits | NIRCam detection image |
| _segmentation.fits | NIRCam segmentation image |
| _x1d.fits | NIRSpec 1D spectra |
| _s2d.fits | NIRSpec 2D spectra |
| _preview.png | Preview image of NIRSpec spectra (1D and 2D) |
| _catalog.fits | Photometric or Line Flux catalogs |
Data Access
JADES images and spectra are available in the MAST Portal (web-based, cross-mission search interface) and Astroquery (Python package to search for and download files from Python scripts you write), and via the direct download table below. Set the Provenance Name filter to JADES in the Portal Advanced Search to find all or individual images.
from astroquery.mast import Observations
all_obs = Observations.query_criteria(provenance_name="jades")
data_products = Observations.get_product_list(all_obs)
Observations.download_products(data_products)
-
A web-based interface for cross-mission searches of data at MAST or the Virtual Observatory
-
Search for and retrieve JADES data products programmatically.
Direct Download
Image files can be downloaded directly from the table below based on the filter used.
| Images |
|---|
| Mosaics by Filter (3.7 GB each) |
| F090W | F115W | F150W | F200W | F277W | F335M | F356W | F410M | F444W |
| Detection Image | Segmentation Image |
Spectra files (all, including 1D and 2D) can be downloaded in bundles based on the disperser-filter combination, linked in the table below. For the Clear-Prism disperser-filter combination, a bundle of preview images of both 1D and 2D spectra is also linked.
| Spectra |
|---|
| Disperser-Filter (each 0.2-0.6 GB) |
| Clear-Prism (Preview Images) | F070LP-G140M| F170LP-G235M | F290LP-G395H | F290LP-G395M |
Catalog files can be downloaded directly from the table below. The file sizes are all <0.3 GB.
| Catalogs |
|---|
| Type |
| NIRCam Photometry |
| NIRSpec Clear-Prism Line Fluxes |
| NIRSpec Gratings Line Fluxes |