## Mission Overview

### CALSPEC: WFC3 IR GRISM SPECTROPHOTOMETRY (WFC3IR-FLUXCAL)

Primary Investigator: Ralph Bohlin

HLSP Authors: Ralph Bohlin

Released: 2019-05-30

Updated: 2019-05-30

Primary Reference(s): Bohlin & Deustua (2019)

Citations: See ADS Statistics

## Overview

WFC3IR-FLUXCAL is a collection of 19 spectral energy distributions (SEDs) using HST WFC3IR grism spectroscopy.  Two IR grisms, G102 and G141, cover a wavelength range from 0.8-1.7 microns at a resolution of R=200 and R=150, respectively.  These WFC3 SEDs overlap existing CALSPEC STIS flux distributions between 0.8-1.0 microns and agree within 1%.  The SEDs for the 19 targets are provided in both FITS and ASCII text format.  A table of sensitivities is also provided for both grisms.  Extracted signals should be divided by these sensitivity values to obtain absolute fluxes, after correcting for changes in sensitivity with time and count rate non-linearity (see Bohlin & Deustua 2019 for complete instructions on how to apply the corrections provided by this HLSP).

## Description Of Data Products

Each of the 19 targets has both a FITS and TXT version of their calibrated SED available.  In addition, there are two tables containing the sensitivity values for the G102 and G141 grisms as derived from this HLSP.

Data file naming convention:

hlsp_wfc3ir-fluxcal_hst_wfc3_<target>_<grisms>_v1_<exten>

where:

• <target> = name of the target, "all" for the sensitivity tables
• <grisms> = grisms applicable for the file, either "g102", "g141", or "g102-g141"
• <exten> = type of file

Data file types:

 _sed.fits spectral energy distribution for a target (FITS format) _sed.txt spectral energy distribution for a target (text format) _sens.txt sensitivity lookup table for the given grism

## Data Access

### Target SEDs

SED (FITS) SED (TXT)

hlsp_wfc3ir-fluxcal_hst_wfc3_2m003618_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_2m003618_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_2m055914_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_2m055914_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_2m1757132_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_2m1757132_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_2m1802271_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_2m1802271_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_2m1808347_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_2m1808347_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_bd60d1753_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_bd60d1753_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_c26202_g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_c26202_g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_g191b2b_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_g191b2b_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_gd153_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_gd153_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_gd71_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_gd71_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_grw-70d5824_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_grw-70d5824_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_hd37725_g102_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_hd37725_g102_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_kf06t2_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_kf06t2_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_p330e_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_p330e_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_snap2_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_snap2_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_vb8_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_vb8_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_wd1327-083_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_wd1327-083_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_wd1657+343_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_wd1657+343_g102-g141_v1_sed.txt

hlsp_wfc3ir-fluxcal_hst_wfc3_wd2341+322_g102-g141_v1_sed.fits

hlsp_wfc3ir-fluxcal_hst_wfc3_wd2341+322_g102-g141_v1_sed.txt

## Citations

Please remember to cite the appropriate paper(s) below and the DOI if you use these data in a published work.

Note: These HLSP data products are licensed for use under CC BY 4.0.