Correction to the photometric colors of the Gaia Data Release 2 with the stellar color regression method
arXiv:2101.04290 · doi:10.3847/1538-4357/abdbac
Abstract
The second Gaia data release (DR2) delivers accurate and homogeneous photometry data of the whole sky to an exquisite quality, reaching down to the unprecedented milli-magnitude (mmag) level for the G, GRP, and GBP passbands. However, the presence of magnitude-dependent systematic effects at the 10 mmag level limits its power in scientific exploitation. In this work, using about half-million stars in common with the LAMOST DR5, we apply the spectroscopy-based stellar color regression method to calibrate the Gaia G-GRP and GBP-GRP colors. With an unprecedented precision of about 1 mmag, systematic trends with G magnitude are revealed for both colors in great detail, reflecting changes in instrument configurations. Color dependent trends are found for the GBP-GRP color and for stars brighter than G~11.5 mag. The calibration is up to 20 mmag in general and varies a few mmag/mag. A revised color-color diagram of Gaia DR2 is given, and some applications are briefly discussed.
arXiv commentApJ accepted. 16 pages , 15 figures
References in corpus (28)
- Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
- The Sloan Digital Sky Survey: Technical Summary
- Gaia Data Release 2. Summary of the contents and survey properties
- The Gaia mission
- The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
- The First Data Release (DR1) of the LAMOST general survey
- Gaia Data Release 2: Photometric content and validation
- Gaia Data Release 2: Catalogue validation
- LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) The survey science plan
- Gaia Data Release 1: Catalogue validation
- A First Catalog of Variable Stars Measured by the Asteroid Terrestrial-impact Last Alert System (ATLAS)
- The Zwicky Transient Facility Catalog of Periodic Variable Stars
- On the use of Gaia magnitudes and new tables of bolometric corrections
- SkyMapper Southern Survey: Second Data Release (DR2)
- Automatic Determination of Stellar Atmospheric Parameters and Construction of Stellar Spectral Templates of the Guoshoujing Telescope (LAMOST)
- Gaia Data Release 2: processing of the photometric data
- A reanalysis of the Gaia Data Release 2 photometric sensitivity curves using HST/STIS spectrophotometry
- Wide-field Infrared Survey Explorer (WISE) Catalog of Periodic Variable Stars
- Revised Gaia Data Release 2 passbands
- The ASAS-SN Catalog of Variable Stars V: Variables in the Southern Hemisphere
- A Correction to the Standard Galactic Reddening Map: Passive Galaxies as Standard Crayons
- Stellar loci II. a model-free estimate of the binary fraction for field FGK stars
- Ages and Masses of 0.64 million Red Giant Branch stars from the LAMOST Galactic Spectroscopic Survey
- LSS-GAC - A LAMOST Spectroscopic Survey of the Galactic Anti-center
- Milky Way Tomography with the SkyMapper Southern Survey. II. Photometric Re-calibration of SMSS DR2
- Stellar color regression: a spectroscopy based method for color calibration to a few mmag accuracy and the recalibration of Stripe 82
- Stellar loci I. Metallicity dependence and intrinsic widths
- The selection function of the LAMOST Spectroscopic Survey of the Galactic Anticentre
Cited by in corpus (12)
- Overview of the LAMOST survey in the first decade
- Empirical temperature- and extinction-dependent extinction coefficients for the GALEX, Pan-STARRS1, Gaia, SDSS, 2MASS, and WISE passbands
- Beyond spectroscopy. I. Metallicities, distances, and age estimates for over twenty million stars from SMSS DR2 and Gaia EDR3
- J-PLUS: Stellar Parameters, C, N, Mg, Ca and [α/Fe] Abundances for Two Million Stars from DR1
- Stellar Loci V: Photometric Metallicities of 27 Million FGK Stars based on Gaia Early Data Release 3
- An all-sky 3D dust map Based on Gaia and LAMOST
- Validations and Corrections of the SFD and Planck Reddening Maps Based on LAMOST and Gaia Data
- Validation and Improvement of the Pan-STARRS Photometric Calibration with the Stellar Color Regression Method
- Photometric recalibration of the SDSS Stripe 82 to a few milimagnitude precision with the stellar color regression method and Gaia EDR3
- Binary fractions of G and K dwarf stars based on the Gaia EDR3 and LAMOST DR5: impacts of the chemical abundances
- The miniJPAS survey: stellar atmospheric parameters from 56 optical filters
- Estimating accurate reddening values of LAMOST M dwarfs