XMM-NEWTON · FORNAX CLUSTER · MOS1 + MOS2

Fornax
spectral atlas

An inspectable overview of 17 radial regions. Each spectrum comes from a saved independent SrcApec best fit, retaining one step best fit per data set, residuals, and a smooth total model.

SPECTRAL REGIONS

17all saved inspect products

FIT BAND

0.4–7.0keV · MOS only

INDEPENDENT y INPUTS

8non-overlapping primary annuli
Fornax XMM EPIC RGB WCS image with all radial regions overlaid
XMM EPIC-RGB HiPS FITS + Astropy WCS. Fine lines mark all analysis annuli; the pink dashed circle is the retained NGC 1399 centre and the red dashed circle excludes NGC 1404.

Every public figure is derived from existing fit, inspection, or profile products. This site neither reruns Sherpa fitting nor exposes PHA, response, or event files.

01 · OVERVIEW

X-ray profiles

Overlapping regions are observational diagnostics; they do not automatically form independent three-dimensional shells.

Independent X-ray fit profile
Independent X-ray fit profileProjected SrcApec norm, kT, and EM across all fitted regions.
QPB-subtracted radial surface brightness
QPB-subtracted radial surface brightnessMOS 0.5–2.0 keV radial diagnostic; overlapping bins remain diagnostics.
Individual-ObsID profile
Individual-ObsID profilePer-ObsID independent fits, displayed with kT constrained below 2 keV.

02 · REGION BY REGION

Best-fit spectral atlas

Yellow region-design maps use the real FITS WCS. Spectra are in count s⁻¹ keV⁻¹ cm⁻² arcmin⁻².

R0–5R0–10R5–10R5–15R10–15R10–20R15–30R20–30R30–40R30–50R40–50R60–70R60–75R60–90R70–80R75–90R80–90

regionR0-5

R0–5

No retained MOS spectrum for the central aperture under the region-specific policy.

Not used for current SZ
2 MOS spectra1 ObsIDskT 1.208 keVR-stat 11.39norm 2.08e-2 arcmin⁻²
Open region design and best-fit spectrum +
R0–5 on the XMM RGB WCS image
Yellow boundary：R0–5；grey marks other radial designs. Geometry source：region_mos_20260820/regionR0-5.reg。
R0–5 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0055140101

regionR0-10

R0–10

Overlaps R5–10 and includes the unavailable central aperture.

Not used for current SZ
13 MOS spectra7 ObsIDskT 1.290 keVR-stat 20.12norm 1.16e-2 arcmin⁻²
Open region design and best-fit spectrum +
R0–10 on the XMM RGB WCS image
Yellow boundary：R0–10；grey marks other radial designs. Geometry source：reconstructed from config/project_policy.json radial contract; original DS9 file not locally synced。
R0–10 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0012830101 · 0055140101 · 0304940101 · 0400620101 · 0550931001 · 0550931401 · 0781350101

regionR5-10

R5–10

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
2 MOS spectra1 ObsIDskT 1.467 keVR-stat 0.90norm 8.12e-3 arcmin⁻²
Open region design and best-fit spectrum +
R5–10 on the XMM RGB WCS image
Yellow boundary：R5–10；grey marks other radial designs. Geometry source：region_mos_20260820/regionR5-10.reg。
R5–10 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0055140101

regionR5-15

R5–15

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
2 MOS spectra1 ObsIDskT 1.376 keVR-stat 1.24norm 6.61e-3 arcmin⁻²
Open region design and best-fit spectrum +
R5–15 on the XMM RGB WCS image
Yellow boundary：R5–15；grey marks other radial designs. Geometry source：region_mos_20260820/regionR5-15.reg。
R5–15 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0055140101

regionR10-15

R10–15

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
2 MOS spectra1 ObsIDskT 1.337 keVR-stat 1.37norm 5.87e-3 arcmin⁻²
Open region design and best-fit spectrum +
R10–15 on the XMM RGB WCS image
Yellow boundary：R10–15；grey marks other radial designs. Geometry source：region_mos_20260820/regionR10-15.reg。
R10–15 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0055140101

regionR10-20

R10–20

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
13 MOS spectra7 ObsIDskT 1.348 keVR-stat 3.74norm 4.25e-3 arcmin⁻²
Open region design and best-fit spectrum +
R10–20 on the XMM RGB WCS image
Yellow boundary：R10–20；grey marks other radial designs. Geometry source：reconstructed from config/project_policy.json radial contract; original DS9 file not locally synced。
R10–20 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0012830101 · 0304940101 · 0400620101 · 0550930101 · 0550931001 · 0550931401 · 0781350101

regionR15-30

R15–30

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
6 MOS spectra3 ObsIDskT 1.261 keVR-stat 3.09norm 3.91e-3 arcmin⁻²
Open region design and best-fit spectrum +
R15–30 on the XMM RGB WCS image
Yellow boundary：R15–30；grey marks other radial designs. Geometry source：region_mos_20260820/regionR15-30.reg。
R15–30 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0055140101 · 0140950201 · 0550930301

regionR20-30

R20–30

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
18 MOS spectra10 ObsIDskT 1.217 keVR-stat 3.54norm 2.03e-3 arcmin⁻²
Open region design and best-fit spectrum +
R20–30 on the XMM RGB WCS image
Yellow boundary：R20–30；grey marks other radial designs. Geometry source：reconstructed from config/project_policy.json radial contract; original DS9 file not locally synced。
R20–30 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0055140101 · 0140950201 · 0304940101 · 0550930101 · 0550930301 · 0550930401 · 0550930501 · 0550931001 · 0550931401 · 0781350101

regionR30-40

R30–40

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
12 MOS spectra6 ObsIDskT 1.099 keVR-stat 1.95norm 1.33e-3 arcmin⁻²
Open region design and best-fit spectrum +
R30–40 on the XMM RGB WCS image
Yellow boundary：R30–40；grey marks other radial designs. Geometry source：reconstructed from config/project_policy.json radial contract; original DS9 file not locally synced。
R30–40 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0140950201 · 0550930301 · 0550930401 · 0550930501 · 0550931001 · 0550931401

regionR30-50

R30–50

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
4 MOS spectra2 ObsIDskT 1.098 keVR-stat 1.45norm 8.72e-4 arcmin⁻²
Open region design and best-fit spectrum +
R30–50 on the XMM RGB WCS image
Yellow boundary：R30–50；grey marks other radial designs. Geometry source：region_mos_20260820/regionR30-50.reg。
R30–50 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0140950201 · 0550930301

regionR40-50

R40–50

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
8 MOS spectra4 ObsIDskT 1.033 keVR-stat 1.47norm 6.84e-4 arcmin⁻²
Open region design and best-fit spectrum +
R40–50 on the XMM RGB WCS image
Yellow boundary：R40–50；grey marks other radial designs. Geometry source：reconstructed from config/project_policy.json radial contract; original DS9 file not locally synced。
R40–50 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0140950201 · 0550930301 · 0550930401 · 0550930501

regionR60-70

R60–70

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
2 MOS spectra1 ObsIDskT 1.001 keVR-stat 1.09norm 2.26e-4 arcmin⁻²
Open region design and best-fit spectrum +
R60–70 on the XMM RGB WCS image
Yellow boundary：R60–70；grey marks other radial designs. Geometry source：region_mos_outer_split_20260821/regionR60-70.reg。
R60–70 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0205590301

regionR60-75

R60–75

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
2 MOS spectra1 ObsIDskT 0.948 keVR-stat 1.62norm 2.11e-4 arcmin⁻²
Open region design and best-fit spectrum +
R60–75 on the XMM RGB WCS image
Yellow boundary：R60–75；grey marks other radial designs. Geometry source：region_mos_outer_split_20260821/regionR60-75.reg。
R60–75 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0205590301

regionR60-90

R60–90

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
24 MOS spectra12 ObsIDskT 0.993 keVR-stat 1.70norm 1.75e-4 arcmin⁻²
Open region design and best-fit spectrum +
R60–90 on the XMM RGB WCS image
Yellow boundary：R60–90；grey marks other radial designs. Geometry source：reconstructed from config/project_policy.json radial contract; original DS9 file not locally synced。
R60–90 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0151370101 · 0151370701 · 0205590301 · 0505140201 · 0505140401 · 0505140501 · 0692840201 · 0692840301 · 0692840401 · 0692840501 · 0924160101 · 0924160201

regionR70-80

R70–80

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
2 MOS spectra1 ObsIDskT 0.855 keVR-stat 1.42norm 1.22e-4 arcmin⁻²
Open region design and best-fit spectrum +
R70–80 on the XMM RGB WCS image
Yellow boundary：R70–80；grey marks other radial designs. Geometry source：region_mos_outer_split_20260821/regionR70-80.reg。
R70–80 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0205590301

regionR75-90

R75–90

Retained for spectral/profile inspection but not used as an independent y input.

Diagnostic overlap
2 MOS spectra1 ObsIDskT 0.898 keVR-stat 1.24norm 1.07e-4 arcmin⁻²
Open region design and best-fit spectrum +
R75–90 on the XMM RGB WCS image
Yellow boundary：R75–90；grey marks other radial designs. Geometry source：region_mos_outer_split_20260821/regionR75-90.reg。
R75–90 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0205590301

regionR80-90

R80–90

Non-overlapping primary annulus used by the preliminary y calculation.

SZ primary
2 MOS spectra1 ObsIDskT 0.971 keVR-stat 0.96norm 1.53e-4 arcmin⁻²
Open region design and best-fit spectrum +
R80–90 on the XMM RGB WCS image
Yellow boundary：R80–90；grey marks other radial designs. Geometry source：region_mos_outer_split_20260821/regionR80-90.reg。
R80–90 saved best-fit spectrum
Saved grouped best-fit spectrum: each data set has a same-colour step best fit; residuals include data errors.
ObsIDs 0205590301