Euclid preparation. XXVII. A UV-NIR spectral atlas of compact planetary nebulae for wavelength calibration

Abstract

The Euclid mission will conduct an extragalactic survey over 15000 deg${}^2$ of the extragalactic sky. The spectroscopic channel of the Near-Infrared Spectrometer and Photometer (NISP) has a resolution of $R\sim 450$ for its blue and red grisms that collectively cover the $0.93$--$1.89$\micron;range. NISP will obtain spectroscopic redshifts for $3\times 10^7$ galaxies for the experiments on galaxy clustering, baryonic acoustic oscillations, and redshift space distortion. The wavelength calibration must be accurate within $5$Åto avoid systematics in the redshifts and downstream cosmological parameters. The NISP pre-flight dispersion laws for the grisms were obtained on the ground using a Fabry-Perot etalon. Launch vibrations, zero gravity conditions, and thermal stabilisation may alter these dispersion laws, requiring an in-flight recalibration. To this end, we use the emission lines in the spectra of compact planetary nebulae (PNe), which were selected from a PN data base. To ensure completeness of the PN sample, we developed a novel technique to identify compact and strong line emitters in Gaia spectroscopic data using the Gaia spectra shape coefficients. We obtained VLT/X-SHOOTER spectra from $0.3$ to $2.5$ \micron;for 19 PNe in excellent seeing conditions and a wide slit, mimicking Euclid's slitless spectroscopy mode but with 10 times higher spectral resolution. Additional observations of one northern PN were obtained in the $0.80$--$1.90$ \micron range with the GMOS and GNIRS instruments at the Gemini North observatory. The collected spectra were combined into an atlas of heliocentric vacuum wavelengths with a joint statistical and systematic accuracy of 0.1 Åin the optical and 0.3 Åin the near-infrared. The wavelength atlas and the related 1D and 2D spectra are made publicly available.

Accepted in A&A

References in corpus (29)

• The Gaia mission
• Gaia Data Release 3: Summary of the content and survey properties
• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• Gaia Early Data Release 3: Photometric content and validation
• Molecfit: A general tool for telluric absorption correction. I. Method and application to ESO instruments
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Molecfit: A general tool for telluric absorption correction II. Quantitative evaluation on ESO-VLT X-Shooter spectra
• The Visible and Infrared Survey Telescope for Astronomy (VISTA): Design, Technical Overview and Performance
• Gaia Data Release 3: Processing and validation of BP/RP low-resolution spectral data
• Gaia Data Release 3: External calibration of BP/RP low-resolution spectroscopic data
• Gaia Data Release 3: Apsis II -- Stellar Parameters
• A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud (II): Complete PN Catalogue
• Planetary Nebulae in Gaia EDR3: Central Star identification, properties and binarity
• The Planetary Nebula population of the Sagittarius Dwarf Spheroidal Galaxy
• Hubble Space Telescope Images of Magellanic Cloud Planetary Nebulae
• One star, two star, red star, blue star: an updated planetary nebula central star distance catalogue from Gaia EDR3
• A blue depression in the optical spectra of M dwarfs
• The chemical composition of planetary nebulae and HII regions in NGC 3109
• Spectral atlas of massive stars around He I 10830 A
• The Progenitors of Planetary Nebulae in Dwarf Irregular Galaxies
• A NLTE analysis of the hot subdwarf O star BD+28 4211. II. The optical spectrum
• The population of Galactic planetary nebulae: a study of distance scales and central stars based on the second GAIA release
• Towards a more complete sample of binary central stars of planetary nebulae with Gaia
• Compact Galactic Planetary Nebulae: A HST/WFC3 Morphological Catalog, and a Study of their Role in the Galaxy
• NEBULAR: A simple synthesis code for the hydrogen and helium nebular spectrum
• A Multiwavelength Analysis of the Halo Planetary Nebula DdDm-1
• J-PLUS: Tools to identify compact planetary nebulae in the Javalambre and southern photometric local universe surveys
• Morphokinematic modelling of the point-symmetric Cat's Eye, NGC 6543: Ring-like remnants of a precessing jet
• A study of extragalactic planetary nebulae populations based on spectroscopy. I. Data compilation and first findings

Cited by in corpus (5)

• Euclid. I. Overview of the Euclid mission
• Euclid. III. The NISP Instrument
• Euclid preparation. XXX. Performance assessment of the NISP Red-Grism through spectroscopic simulations for the Wide and Deep surveys
• An accurate measurement of the spectral resolution of the JWST Near Infrared Spectrograph
• JWST's PEARLS: A z=6 quasar in a train-wreck galaxy merger system