Characterization of the HCl-HBr-HI gas absorption cell for GIANO-TNG

Year: 2008

Authors: D’Amato F., Viciani S., Oliva E., Origlia L., Mochi I.

Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, L.go E. Fermi 6, 50125 Firenze, Italy; Osservatorio Astrofisico di Arcetri, L.go E. Fermi 5, 50125 Firenze, Italy; Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy

Abstract: GIANO is an high resolution cross-disperscd spectrometer operating at near IR wavelengths (0.9-2.5 microns) which will be soon commissioned at the 3.6m TNG Italian telescope in La Palma. One of its most ambitious aims is searching for earth-like planets with habitable conditions around very cool main sequence stars. This requires measurements of radial velocities with accuracies of a few m/s which can be achieved by means of a gas absorption cell containing a mixture of the halogen-hydrates HCl, HBr and HI. We present here the results of the laboratory work for the construction and characterization of such cell.

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KeyWords: Ground based infrared instrumentation; Absorption cells; Doppler measurements; Earth-like planets; Ground based infrared instrumentation; High resolution; Laboratory work; Main sequence stars; Near-IR; Radial velocity, Astronomical satellites; Astrophysics; Doppler effect; Gas absorption; Gas hydrates; Instruments; Spectrometry, Infrared spectrometers
DOI: 10.1117/12.788231

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