Publication


A. Seifahrt, et al.
Synthesising, using, and correcting for telluric features in high-resolution astronomical spectra - A near-infrared case study using CRIRES⋆
A&A, 524, A11, 2010; doi: 10.1051/0004-6361/200913782
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Abstract


We present a technique to synthesise telluric absorption and emission features both for in-situ wavelength calibration and for their removal from astronomical spectra. While the presented technique is applicable for a wide variety of optical and infrared spectra, we concentrate in this paper on selected high-resolution near-infrared spectra obtained with the CRIRES spectrograph to demonstrate its performance and limitation. We find that synthetic spectra reproduce telluric absorption features to about 2%, even close to saturated line cores. Thus, synthetic telluric spectra could be used to replace the observation of telluric standard stars, saving valuable observing time. This technique also provides a precise in-situ wavelength calibration, especially useful for high-resolution near-infrared spectra in the absence of other calibration sources.

Reference


@article{refId0,
  author = "A. Seifahrt and H. U. Käufl and G. Zängl and J. L. Bean and M. J. Richter and R. Siebenmorgen",
  title = "Synthesising, using, and correcting for telluric features in high-resolution astronomical spectra - A near-infrared case study using CRIRES⋆",
  year = 2010,
  journal = "A&A",
  volume = 524,
  pages = "A11",
  month = "Dec",
  doi = "10.1051/0004-6361/200913782",
  url = "https://doi.org/10.1051/0004-6361/200913782"
}
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