The Gaia spectrophotometric standard stars survey -II. Instrumental effects of six ground-based observing campaigns

Abstract

The Gaia SpectroPhotometric Standard Stars (SPSS) survey started in 2006, it was awarded almost 450 observing nights, and accumulated almost 100,000 raw data frames, with both photometric and spectroscopic observations. Such large observational effort requires careful, homogeneous, and automated data reduction and quality control procedures. In this paper, we quantitatively evaluate instrumental effects that might have a significant (i.e.,$\ge$1%) impact on the Gaia SPSS flux calibration. The measurements involve six different instruments, monitored over the eight years of observations dedicated to the Gaia flux standards campaigns: DOLORES@TNG in La Palma, EFOSC2@NTT and ROSS@REM in La Silla, [email protected] in Calar Alto, BFOSC@Cassini in Loiano, and [email protected] in San Pedro Martir. We examine and quantitatively evaluate the following effects: CCD linearity and shutter times, calibration frames stability, lamp flexures, second order contamination, light polarization, and fringing. We present methods to correct for the relevant effects, which can be applied to a wide range of observational projects at similar instruments.

16 pages, 13 figures, accepted for publication in Astron. Nachr

References in corpus (8)

• SNLS3: Constraints on Dark Energy Combining the Supernova Legacy Survey Three Year Data with Other Probes
• The Gaia astrophysical parameters inference system (Apsis). Pre-launch description
• The catalogue of radial velocity standard stars for Gaia I. Pre-launch release
• The Gaia spectrophotometric standard stars survey. I. Preliminary results
• Fringe Science: Defringing CCD Images with Neon Lamp Flat Fields
• The Panchromatic High-Resolution Spectroscopic Survey of Local Group Star Clusters - I. General Data Reduction Procedures for the VLT/X-shooter UVB and VIS arm
• Multi-site campaign on the open cluster M67. I. Observations and photometric reductions
• Supernovae and Gaia

Cited by in corpus (17)

• The Gaia mission
• Gaia Early Data Release 3: Photometric content and validation
• Gaia Data Release 2: Photometric content and validation
• On the use of Gaia magnitudes and new tables of bolometric corrections
• Gaia Data Release 3: Astrophysical parameters inference system (Apsis) I -- methods and content overview
• 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
• A reanalysis of the Gaia Data Release 2 photometric sensitivity curves using HST/STIS spectrophotometry
• Revised Gaia Data Release 2 passbands
• Gaia data release 1: Principles of the photometric calibration of the G band
• Globular clusters with Gaia
• Gaia Data Release 3: A Golden Sample of Astrophysical Parameters
• The Gaia EDR3 view of Johnson-Kron-Cousins standard stars: the curated Landolt and Stetson collections
• The Gaia spectrophotometric standard stars survey - III. Short-term variability monitoring
• The Gaia spectrophotometric standard stars survey -- V. Preliminary flux tables for the calibration of Gaia DR2 and (E)DR3
• Characterising eclipsing white dwarf M dwarf binaries from multi-band eclipse photometry
• The Gaia spectrophotometric standard stars survey -- IV. Results of the absolute photometry campaign