Characterizing the astrometric errors in the Gaia catalogue Berry Holl

0.0075 0.0125CorrelationCorrelationCorrelation-0.0050 0.00000.05δ,µ δ0.03 0.050.05-0.00750.5 deg binned spatial correlations (49 datasets)0.04 -0.00250.040.040.01500.02-0.01000.030.030.03-0.00500.01250.020.010.020.02-0.0125 -0.00750.5 deg binned spatial correlations (112 datasets)0.01000.010.010.0150-0.01500.000.000.00-0.01000.000.000.007502.5 5.010 5.0 7.57.5 10.020 10.0 3012.5 15.040 15.0 0.017.5 50 17.5 20.0 2.5 20.060 2.570 5.0 5.0 80 7.5 90 10.0 10.0 100 12.5 15.0 12.5 110 17.5 120 15.0 20.0130 17.5 14020.0150 160 170 1800.0125SeparationSeparation [deg][deg][deg]Separation [deg]Separation [deg] [deg]AlphaStar Delta Parallax MuAlphaStar MuDelta-0.0125 AlphaStar Delta Parallax MuAlphaStar MuDeltaAlphaStar Delta Parallax MuAlphaStar MuDeltaAlphaStar Delta Parallax MuAlphaStar MuDeltaAlphaStar Delta Parallax MuAlphaStar MuDelta corr. estimate (from FOV overlap)0.0050 0.0100AlphaStar Delta Parallax MuAlphaStar MuDelta:"66%$*%16%CDPD AlphaStar Delta Parallax MuAlphaStar MuDelta corr. estimate (from FOV overlap)-0.01500.5 1.0 deg binned spatial correlations (759 datasets)1.0 deg binned spatial correlations (759 (25 datasets) 1.0 deg binned spatial correlations (759 (17 datasets)0.00250.100.100.100.00750 10 20 30 40 50FOV = 13 ◦ 60 70 80 90 100 110FOV = 13 ◦ 120 130 140 150 160 170 180FOV = 13 ◦0.090.09Separation [deg]0.090.0000 #stars/FOV = 12 #stars/FOV = 36 #stars/FOV =1200.0050Correlation0.0050 0.01000.5 1.0 deg binned spatial correlations (759 datasets)0.5 1.0 deg binned spatial correlations (112 (759 datasets)1.0 0.5 deg binned spatial correlations (759 (49 datasets)0.100.100.100.0025 0.00750.090.0000 0.00500.08-0.00250.070.00250.060.08-0.00250.07 0.00250.06-0.0050 0.00000.05-0.0075 -0.00250.04-0.01000.03-0.00500.02-0.0125 -0.00750.01δ,µ δ-0.0150 -0.0100α,µ α , πα,µ α , π0.06FOV = 13 ◦#stars/FOV = 120.05Correlation0.070.04CorrelationCorrelation0.090.080.070.06AlphaStar Delta Parallax MuAlphaStar MuDelta corr. estimate (from FOV overlap)AlphaStar Delta Parallax MuAlphaStar MuDelta0.080.080.070.060.060.05more stars per 0.05 FOV0.040.030.020.01FOV = 7 ◦ FOV = 4 ◦0.09#stars/FOV = 12 #stars/FOV = 12smaller FOV0.000.000.000.0 0 2.5 10 5.0 7.5 20 10.0 30 12.540 15.0 50 17.5 20.060 2.570 5.0 80 7.5 90 10.0 100 12.5 15.0 110 17.5 120 20.0130 2.5 140 5.0 7.5 150 10.0 160 12.5170 15.0 18017.5 20.0Separation [deg]Separation [deg]Separation [deg]:"66%$*%16%CDPD Separation [deg]-0.012541AlphaStar Delta Parallax AlphaStar MuAlphaStar Delta Parallax MuDelta MuAlphaStar corr. AlphaStar MuDeltaAlphaStar Delta Parallax estimate (from Delta FOV Parallax overlap) MuAlphaStar MuAlphaStar MuDelta MuDeltaAlphaStar Delta Parallax corr. AlphaStar estimate (from Delta FOV Parallax overlap) MuAlphaStar MuAlphaStar MuDelta MuDelta corr. estimate (from FOV overlap)AlphaStar Delta Parallax MuAlphaStar MuDelta-0.01500 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180Separation [deg]Correlation0.080.070.060.070.040.030.020.01AlphaStar Delta Parallax MuAlphaStar MuDeltaCorrelation0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0AlphaStar Delta Parallax MuAlphaStar MuDelta corr. estimate (from FOV overlap)Berry Holl Characterization and analysis of the astrometric errors in the global astrometric solution for Gaia 2012H5"2-.'02Berry HollCharacterization and analysisof the astrometric errorsin the global astrometricsolution for Gaia*%+,4%,$!&4%',($$%$",2$%2!8!#(,)&,#.(,!"#$%'(#$)-,"%:;#)%&?‣ Holl, Lindegren, Hobbs (2010, 2011, 2012a, 2012b)*%+,-!&,#.(,-%/!$)!&-(,0(#+((&,!&1,2!)$,%3,!"#$%'(#$)-,2!$!'(#($",0(,("#)'!#(4?‣ Holl, Lindegren, Hobbs (2012a, 2012b)5.!#,)",#.(,)'2!-#,%3,667,$!4)!#)%&,4!'!8(,%&,9!)!,!"#$%'(#$1?Lund ObservatoryDepartment of Astronomy and Theoretical PhysicsLund University, Sweden‣ Prodʼhomme & Holl et al. (2011), Holl & Prodʼhomme et al. (2012)