X-ray Hardness

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

Hardness Ratios for M81*, Obsid 5600

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.004 0.236 0.240
ACIS-I 0.060 0.466 0.512

Quantiles for M81*, Obsid 5600

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.927 0.002 1.292 0.007 1.891 0.008

Q-norm 0.081 0.000 0.129 0.001 0.207 0.001
ACIS-I keV 1.044 0.006 1.424 0.004 2.081 0.015

Q-norm 0.097 0.001 0.146 0.001 0.231 0.002

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Hardness Ratios for M81*, Obsid 5600
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.004	0.236	0.240
ACIS-I	0.060	0.466	0.512

Quantiles for M81*, Obsid 5600
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.927	0.002	1.292	0.007	1.891	0.008
ACIS-S	Q-norm	0.081	0.000	0.129	0.001	0.207	0.001
ACIS-I	keV	1.044	0.006	1.424	0.004	2.081	0.015
ACIS-I	Q-norm	0.097	0.001	0.146	0.001	0.231	0.002