X-ray Hardness

View complete listing of X-Atlas Spectral Metrics (Hardness, Quantiles).

Hardness Ratios for M81*, Obsid 6346

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.029 0.176 0.205
ACIS-I 0.081 0.430 0.494

Quantiles for M81*, Obsid 6346

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.898 0.001 1.292 0.006 1.891 0.006

Q-norm 0.078 0.000 0.129 0.001 0.207 0.001
ACIS-I keV 1.059 0.004 1.438 0.007 2.081 0.011

Q-norm 0.099 0.000 0.148 0.001 0.231 0.001

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Hardness Ratios for M81*, Obsid 6346
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.029	0.176	0.205
ACIS-I	0.081	0.430	0.494

Quantiles for M81*, Obsid 6346
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.898	0.001	1.292	0.006	1.891	0.006
ACIS-S	Q-norm	0.078	0.000	0.129	0.001	0.207	0.001
ACIS-I	keV	1.059	0.004	1.438	0.007	2.081	0.011
ACIS-I	Q-norm	0.099	0.000	0.148	0.001	0.231	0.001