CR7 and similar spectroscopic study with the HST grism

Spectroscopic data from the Hubble Space Telescope’s Wide Field Camera 3 (WFC3) on CR7 is studied, and we aim to produce meaningful results. WFC3 observes in the near ultra-violet, visibile, and near-infrared wavelengths. Information such as emission line ratios can be used to determine the properties of CR7.

Aims of the project:
  • Extract spectrum and understand grism.
  • Measure continuum level.
  • Understand role of resolution.
  • Take known spectra and convolve them to grism resolution.
  • Input different lines to check their detectability.
  • Interpret EW limits and what they mean. (AF2 data-set: identify other emission lines in 2D).