X-ray Hardness

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

Hardness Ratios for M81*, Obsid 5601

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.011 0.186 0.198
ACIS-I 0.068 0.428 0.482

Quantiles for M81*, Obsid 5601

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.898 0.001 1.263 0.001 1.891 0.007

Q-norm 0.078 0.000 0.125 0.000 0.207 0.001
ACIS-I keV 1.029 0.007 1.424 0.006 2.095 0.010

Q-norm 0.095 0.001 0.146 0.001 0.233 0.001

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Hardness Ratios for M81*, Obsid 5601
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.011	0.186	0.198
ACIS-I	0.068	0.428	0.482

Quantiles for M81*, Obsid 5601
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.898	0.001	1.263	0.001	1.891	0.007
ACIS-S	Q-norm	0.078	0.000	0.125	0.000	0.207	0.001
ACIS-I	keV	1.029	0.007	1.424	0.006	2.095	0.010
ACIS-I	Q-norm	0.095	0.001	0.146	0.001	0.233	0.001