Wavelength-Diversity Derived Low Resolution Spectra of HR8799b
Abstract
We present low resolution spectra for HR8799b from data from the OSIRIS integral field spectrograph (IFS) at Keck observatory. These are derived via an advanced method of PSF subtraction that leverages the spectral diversity available in IFS data to generate an optimally compacted decomposition of imaging data [Marois et al., 2010, Soummer et al., 2012]. This method allows for the quantification of overall signal throughput and residual noise variance and enables forward modeling of astrophysical sources. We compare the derived spectra to previously published results, and present a discussion of the algorithm and validation of its performance via recovery of simulated spectra injected into the original data set.
- Publication:
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American Astronomical Society Meeting Abstracts #221
- Pub Date:
- January 2013
- Bibcode:
- 2013AAS...22134322S