/ftp/cats/A+A/648/A48



==========================================================================
J/A+A/648/A48       SPIRou wavelength calibration                (Hobson+, 2021)
The following files can be converted to FITS (extension .fit or fit.gz)
	table1.dat
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/648/A48
==========================================================================

drwxr-xr-x 36 cats archive 4096 Jun 28 2021 [Up] drwxr-xr-x 3 cats archive 208 Jan 12 2023 [TAR file] -rw-r--r-- 1 cats archive 468 Dec 19 2022 .message -r--r--r-- 1 cats archive 3415 Apr 9 2021 ReadMe -r--r--r-- 1 cats archive 42650 Mar 30 2021 table1.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/A+A/648/A48 SPIRou wavelength calibration (Hobson+, 2021) ================================================================================ The SPIRou wavelength calibration for precise radial velocities in the near infrared. Hobson M.J., Bouchy F., Cook N.J., Artigau E., Moutou C., Boisse I., Lovis C., Carmona A., Delfosse X., Donati J.-F., the SPIRou Team <Astron. Astrophys. 648, A48 (2021)> =2021A&A...648A..48H (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Atomic physics ; Spectroscopy Keywords: techniques: spectroscopic - instrumentation: spectrographs - methods: data analysis Abstract: SPIRou is a near-infrared (nIR) spectropolarimeter at the CFHT, covering the YJHK nIR spectral bands (980-2350nm). We describe the development and current status of the SPIRou wavelength calibration in order to obtain precise radial velocities (RVs) in the nIR. We make use of a UNe hollow-cathode lamp and a Fabry-Perot etalon to calibrate the pixel-wavelength correspondence for SPIRou. Different methods are developed for identifying the hollow-cathode lines, for calibrating the wavelength dependence of the Fabry-Perot cavity width, and for combining the two calibrators. The hollow-cathode spectra alone do not provide a sufficiently accurate wavelength solution to meet the design requirements of an internal error of <0.45m/s, for an overall RV precision of 1m/s. However, the combination with the Fabry-Perot spectra allows for significant improvements, leading to an internal error of 0.15m/s. We examine the inter-night stability, intra-night stability, and impact on the stellar RVs of the wavelength solution. Description: We present our updated list of UNe lines for hollow-cathode UNe lamps, derived through combining the lamp with a FP etalon, as described in Sect. 4 of the paper. The original wavelength values come from the catalogues of Redman et al. (2011ApJS..195...24R, Cat. J/ApJS/195/24) or Sarmiento et al. (2018A&A...618A.118S, Cat. J/A+A/618/A118).