SIMBAD references

2010A&A...524A..11S - Astronomy and Astrophysics, volume 524, A11-11 (2010/12-1)

Synthesising, using, and correcting for telluric features in high-resolution astronomical spectra. A near-infrared case study using CRIRES.

SEIFAHRT A., KAEUFL H.U., ZAENGL G., BEAN J.L., RICHTER M.J. and SIEBENMORGEN R.

Abstract (from CDS):

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.

Abstract Copyright:

Journal keyword(s): atmospheric effects - instrumentation: adaptive optics - instrumentation: spectrographs - methods: observational - methods: data analysis

Simbad objects: 6

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2020.08.15-03:17:28

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