X-ray Hardness

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

Hardness Ratios for M81*, Obsid 6174

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.034 0.170 0.203
ACIS-I 0.091 0.431 0.502

Quantiles for M81*, Obsid 6174

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.898 0.000 1.278 0.003 1.920 0.007

Q-norm 0.078 0.000 0.127 0.000 0.210 0.001
ACIS-I keV 1.044 0.007 1.438 0.004 2.197 0.019

Q-norm 0.097 0.001 0.148 0.000 0.246 0.002

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Hardness Ratios for M81*, Obsid 6174
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.034	0.170	0.203
ACIS-I	0.091	0.431	0.502

Quantiles for M81*, Obsid 6174
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.898	0.000	1.278	0.003	1.920	0.007
ACIS-S	Q-norm	0.078	0.000	0.127	0.000	0.210	0.001
ACIS-I	keV	1.044	0.007	1.438	0.004	2.197	0.019
ACIS-I	Q-norm	0.097	0.001	0.148	0.000	0.246	0.002