X-ray Hardness

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

Hardness Ratios for M81*, Obsid 6347

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.002 0.190 0.192
ACIS-I 0.061 0.431 0.480

Quantiles for M81*, Obsid 6347

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.898 0.001 1.263 0.001 1.876 0.007

Q-norm 0.078 0.000 0.125 0.000 0.205 0.001
ACIS-I keV 1.044 0.007 1.409 0.006 2.110 0.013

Q-norm 0.097 0.001 0.144 0.001 0.235 0.002

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Hardness Ratios for M81*, Obsid 6347
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.002	0.190	0.192
ACIS-I	0.061	0.431	0.480

Quantiles for M81*, Obsid 6347
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.898	0.001	1.263	0.001	1.876	0.007
ACIS-S	Q-norm	0.078	0.000	0.125	0.000	0.205	0.001
ACIS-I	keV	1.044	0.007	1.409	0.006	2.110	0.013
ACIS-I	Q-norm	0.097	0.001	0.144	0.001	0.235	0.002