Gaia Synthetic Photometry Catalogue (GSPC) (gaiadr3.synthetic_photometry_gspc)

The table has 218936915 rows, 54 columns.

Description

This is a catalogue of synthetic photometry generated from the Gaia BP/RP mean spectra in Data Release 3 and standardised using wide and reliable sets of external standard stars.Only sources that have BP/RP mean spectra in Gaia DR3 can be included in this catalogue. Individual magnitudes and fluxes are included only if FσF > 30 in that passband, where F and σF are the flux and its uncertainty. Synthetic photometry is provided in a selection of photometric systems.Further details on the generation and composition of the catalogue are available in DR3-DPACP-93.

Known issues

Wrong units in SDSS and PS1 flux and flux error fields in table gaiadr3.synthetic_photometry_gspc

The units of the SDSS and PanSTARRS1 (PS1) flux and flux error fields in the Gaia DR3 table gaiadr3.synthetic_photometry_gspc (Gaia Collaboration, Montegriffo, et al., 2022) are W m−2 nm−1 but should read W m−2 Hz−1. The reason is that the SDSS and PS1 photometric systems use AB rather than Vega magnitudes. Only the units are wrong: the table and data are otherwise correct.

Error in the PS1 synthetic photometry in table gaiadr3.synthetic_photometry_gspc

Due to a bug in GaiaXPy (fixed in patch 1.2.4, released on the 9th of January 2023), the synthetic photometry for the standardized PanSTARRS1 y band (contained in the fields y_ps1_flux, y_ps1_flux_error and y_ps1_mag) has been generated without applying the flux offset mitigating the systematic effect at the faint end due to background issues (also referred to as hockey-stick, see Section 2.2.1 and equation 13 in Gaia Collaboration, Montegriffo, et al., 2022). The offset should have been applied to the synthetic flux and then propagated to the flux error and magnitude. However, no offset was applied.

The table gaiadr3.synthetic_photometry_gspc will not be fixed. However, correct synthetic photometry in the standardised PanSTARRS1 system can be generated using GaiaXPy (with version 1.2.4 or later) on spectra extracted from the Gaia archive.

Attribution

If you have used Gaia data in your research, please use the following acknowledgement:

This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

More information can be found on the credit and citation instructions page.

Columns

Name Type UCD Unit Description
source_id long meta.id
meta.main
meta.ref

Unique source identifier (unique within a particular Data Release)
c_star float phot.color
arith.ratio

BP/RP excess factor corrected for the expected colour dependency
u_jkc_flux float phot.flux
em.opt.U 		W.m**-2.nm**-1

U flux in the Johnson-Kron-Cousins system
u_jkc_flux_error float stat.error
phot.flux
em.opt.U 		W.m**-2.nm**-1

Error on the U flux in the Johnson-Kron-Cousins system
u_jkc_mag float phot.mag
em.opt.U 		mag

U magnitude in the Johnson-Kron-Cousins system
u_jkc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
b_jkc_flux float phot.flux
em.opt.B 		W.m**-2.nm**-1

B flux in the Johnson-Kron-Cousins system
b_jkc_flux_error float stat.error
phot.flux
em.opt.B 		W.m**-2.nm**-1

Error on the B flux in the Johnson-Kron-Cousins system
b_jkc_mag float phot.mag
em.opt.B 		mag

B magnitude in the Johnson-Kron-Cousins system
b_jkc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
v_jkc_flux float phot.flux
em.opt.V 		W.m**-2.nm**-1

V flux in the Johnson-Kron-Cousins system
v_jkc_flux_error float stat.error
phot.flux
em.opt.V 		W.m**-2.nm**-1

Error on the V flux in the Johnson-Kron-Cousins system
v_jkc_mag float phot.mag
em.opt.V 		mag

V magnitude in the Johnson-Kron-Cousins system
v_jkc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
r_jkc_flux float phot.flux
em.opt.R 		W.m**-2.nm**-1

R flux in the Johnson-Kron-Cousins system
r_jkc_flux_error float stat.error
phot.flux
em.opt.R 		W.m**-2.nm**-1

Error on the R flux in the Johnson-Kron-Cousins system
r_jkc_mag float phot.mag
em.opt.R 		mag

R magnitude in the Johnson-Kron-Cousins system
r_jkc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
i_jkc_flux float phot.flux
em.opt.I 		W.m**-2.nm**-1

I flux in the Johnson-Kron-Cousins system
i_jkc_flux_error float stat.error
phot.flux
em.opt.I 		W.m**-2.nm**-1

Error on the I flux in the Johnson-Kron-Cousins system
i_jkc_mag float phot.mag
em.opt.I 		mag

I magnitude in the Johnson-Kron-Cousins system
i_jkc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
u_sdss_flux float phot.flux
em.opt.U 		W.m**-2.Hz**-1

u flux in the SDSS system
u_sdss_flux_error float stat.error
phot.flux
em.opt.U 		W.m**-2.Hz**-1

Error on the u flux in the SDSS system
u_sdss_mag float phot.mag
em.opt.U 		mag

u magnitude in the SDSS system
u_sdss_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
g_sdss_flux float phot.flux
em.opt.B 		W.m**-2.Hz**-1

g flux in the SDSS system
g_sdss_flux_error float stat.error
phot.flux
em.opt.B 		W.m**-2.Hz**-1

Error on the g flux in the SDSS system
g_sdss_mag float phot.mag
em.opt.B 		mag

g magnitude in the SDSS system
g_sdss_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
r_sdss_flux float phot.flux
em.opt.R 		W.m**-2.Hz**-1

r flux in the SDSS system
r_sdss_flux_error float stat.error
phot.flux
em.opt.R 		W.m**-2.Hz**-1

Error on the r flux in the SDSS system
r_sdss_mag float phot.mag
em.opt.R 		mag

r magnitude in the SDSS system
r_sdss_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
i_sdss_flux float phot.flux
em.opt.I 		W.m**-2.Hz**-1

i flux in the SDSS system
i_sdss_flux_error float stat.error
phot.flux
em.opt.I 		W.m**-2.Hz**-1

Error on the i flux in the SDSS system
i_sdss_mag float phot.mag
em.opt.I 		mag

i magnitude in the SDSS system
i_sdss_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
z_sdss_flux float phot.flux
em.opt.I 		W.m**-2.Hz**-1

z flux in the SDSS system
z_sdss_flux_error float stat.error
phot.flux
em.opt.I 		W.m**-2.Hz**-1

Error on the z flux in the SDSS system
z_sdss_mag float phot.mag
em.opt.I 		mag

z magnitude in the SDSS system
z_sdss_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
y_ps1_flux float phot.flux
em.IR.J 		W.m**-2.Hz**-1

y flux in the Pan-STARRS1 system
y_ps1_flux_error float stat.error
phot.flux
em.IR.J 		W.m**-2.Hz**-1

Error on the y flux in the Pan-STARRS1 system
y_ps1_mag float phot.mag
em.IR.J 		mag

y magnitude in the Pan-STARRS1 system
y_ps1_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
f606w_acswfc_flux float phot.flux
em.opt.V 		W.m**-2.nm**-1

F606W flux in the HST ACS/WFC system
f606w_acswfc_flux_error float stat.error
phot.flux
em.opt.V 		W.m**-2.nm**-1

Error on the F606W flux in the HST ACS/WFC system
f606w_acswfc_mag float phot.mag
em.opt.V 		mag

F606W magnitude in the HST ACS/WFC system
f606w_acswfc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range
f814w_acswfc_flux float phot.flux
em.opt.I 		W.m**-2.nm**-1

F814W flux in the HST ACS/WFC system
f814w_acswfc_flux_error float stat.error
phot.flux
em.opt.I 		W.m**-2.nm**-1

Error on the F814W flux in the HST ACS/WFC system
f814w_acswfc_mag float phot.mag
em.opt.I 		mag

F814W magnitude in the HST ACS/WFC system
f814w_acswfc_flag short meta.code.qual

Flag indicating if G mag and BP-RP color of the source lie in the validated range