X-ray Hardness

Convolved/Predicted ACIS-S hardness plot

Hardness ratios calculated from the predicted ACIS-S Aimpoint spectra of selected X-Atlas targets (× = hot star; ◊ = cool star). S, M, and H are the total predicted counts in the passbands listed on the plot. CAPELLA in Obsid 1199 is circled in red on the plot.

Download plot: GIF PS

Download plot data: Text file

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

Convolved/Predicted ACIS-I hardness plot

Hardness ratios calculated from the predicted ACIS-I Aimpoint spectra of selected X-Atlas targets (× = hot star; ◊ = cool star). S, M, and H are the total predicted counts in the passbands listed on the plot. CAPELLA in Obsid 1199 is circled in red on the plot.

Download plot: GIF PS

Download plot data: Text file

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

Hardness Ratios for CAPELLA, Obsid 1199

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)

X-ray Quantiles

ACIS-S hot stars JPG Postscript	ACIS-S cool stars JPG Postscript
ACIS-I hot stars JPG Postscript	ACIS-I cool stars JPG Postscript

Quantile-based color-color diagram: (m = Q₅₀ = (E₅₀ - E_lo)/(E_hi - E_lo)). E_lo = 0.3 keV; E_hi = 8.0 keV

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

Quantiles for CAPELLA, Obsid 1199

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error

Observation Preview

Chandra Configuration for the Observation

Return to Search Page

X-Atlas Home

Hardness Ratios for CAPELLA, Obsid 1199
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)

Quantiles for CAPELLA, Obsid 1199
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error