Gaia error models
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02.01.2018
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Gaia error models Gaia error models
The mean end-of-mission standard error for parallax includes
Magnitudes: Magnitudes
Low-resolution spectro-photometry obtained in the Blue and Red Photometers
RVS spectrometer: Resolving power 11,500
Gaia
error models
Gaia error models
Astrometry
Photometry
Spectra
Radial Velocities
Rotational velocities
Astrophysical
Parameters
We describe here:
GOG approach
the receipts published in the Gaia
Science Performance website
The mean end-of-mission standard error for parallax includes:
The mean end-of-mission standard error for parallax includes:
all known instrumental effects
an
appropriate calibration error
20 % margin (results from the on-ground data processing are not included)
Magnitudes:
Magnitudes:
G : broad-band (white-light), fluxes obtained in the astrometric instrument
GBp and GRp: integrated
from low resolution spectra
GRVS: integrated from RVS spectrometer
Low-resolution spectro-photometry obtained in
the Blue and Red Photometers
Low-resolution spectro-photometry obtained in the Blue and Red Photometers
Spectral dispersion & wavelength range:
BP: ~3 to ~27 nm pixel-1 ~330-680 nm
RP: ~7 to ~15 nm pixel-1 ~640-1050 nm
1
CCD along scan each
RVS spectrometer:
Resolving power ~11,500
wavelength range: 847-874 nm.
3 CCDs (strips) along scan
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