SuperBoRG is an archival project that primarily aims to search for luminous galaxies and quasars at redshifts z > 7. SuperBoRG compiled HST’s multi-band imaging data previously taken in parallel observations designed for extragalactic science and reduced all data in a consistent manner. From both pure-parallel and coordinated-parallels programs with WFC3 in the past decade, it collected 316 independent sightlines with multi-band imaging data at moderate depth. The total area reaches ~0.41 deg^2, making it one of the largest area, extragalactic datasets. All data were reduced with a new pipeline with a few updates from the previous BoRG HLSP data release, including sophisticated sky subtraction and PSF matching. This data release includes imaging data and catalogs.
The image products have the following file naming convention:
- <ins> = Name of instrument, either "wfc3", "acs", or both ("acs-wfc3").
- <id> = Target ID of the galaxy, e.g., "0006+1607".
- <filter> = Name of filter used, e.g., "f600lp", or set to "det" for the detection image and "opt" for the optical-combined image.
- <ext> = Type of image product, described below.
The catalog products have the following naming convention:
- <ext> = Type of catalog product, described below.
Note on "detection" and "optical-combined" files.
The "detection" image products make use of the F140W+F160W filters if F140W is available, F160W only if not. They use "det" in the filter part of the file name.
The "optical-combined" image products make use of all of the following filters, depending on which are available: 'F300X', 'F350LP', 'F435W', 'F475W', 'F475W', 'F475X', 'F555W', 'F600LP', 'F606W', 'F625W', 'F775W', 'F814W', 'F850LP'. They use "opt" in the filter part of the file name.
Note on segmentation map headers.
The headers of the segmentation map come from one of the HST images that went into making them, but they are effectively meaningless and should be ignored. The segmentation map files are applicable to the detection images, and thus the individual keywords in the headers of these files should be ignored.
Data file types:
|_drz-sci.fits||Science image at original resolution. Pixel scale is set to 0.08 arcsec.|
|_seg.fits||Segmentation map, especailly useful for those using the source catalog.|
|_drz-conv-sci.fits||Science image convolved to F160W PSF size.|
|_master.fits||Master catalog for all sources in SuperBoRG.|
|_photometry.fits||Source photometric flux catalog.|
|_redshift.fits||Source redshift catalog.|
|_highz.fits||High-redshift source flag catalog. If a source satisfies a color selection, the value for the corresponding column is set to 1; if not, 0. If the source is not qualified for the color selection, the value is set to -99.|
Bundles of all image products for a given target are available in the table below in .tar.gz file format (each is a few hundred MB in size). The catalog files are provided in FITS format, and range in size from ~50 to ~200 MB.