From D configuration data release I (Wiegert et al. 2015). Please click on the image for a larger view.
From B configuration data release III (Irwin et al. 2019). Please click on the image for a larger view.
To obtain the fits data files, click on the configuration listings below and then on the band listings. Right click and "Save Link As..." to download the file. Then use your favourite FITS-reading software to display the image.
D Configuration
L-Band
Most files are approximately(~) 1 MB in size.
| High Resolution | Low Resolution |
|---|---|
| Total Intensity | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| Linear Polarization | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| POLARIZATION ANGLE | |
| Rob 0 | UVtap |
| SPECTRAL INDEX | |
| Rob 0 (PBcor) | UVtap (PBcor) |
| SPECTRAL INDEX ERROR | |
| Rob 0 (PBcor) | UVtap (PBcor) |
C-Band
Most files are less than 1 MB in size.
| High Resolution | Low Resolution |
|---|---|
| Total Intensity | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| Linear Polarization | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| POLARIZATION ANGLE | |
| Rob 0 | UVtap |
| SPECTRAL INDEX | |
| Rob 0 (PBcor) | UVtap (PBcor) |
| SPECTRAL INDEX ERROR | |
| Rob 0 (PBcor) | UVtap (PBcor) |
C Configuration
L-Band
| High Resolution | Low Resolution |
|---|---|
| Total Intensity | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| Linear Polarization | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| POLARIZATION ANGLE | |
| Rob 0 | UVtap |
| SPECTRAL INDEX | |
| Rob 0 (PBcor) | UVtap (PBcor) |
| SPECTRAL INDEX ERROR | |
| Rob 0 (PBcor) | UVtap (PBcor) |
C-Band
| High Resolution | Low Resolution |
|---|---|
| Total Intensity | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| Linear Polarization | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| POLARIZATION ANGLE | |
| Rob 0 | UVtap |
| SPECTRAL INDEX | |
| Rob 0 (PBcor) | UVtap (PBcor) |
| SPECTRAL INDEX ERROR | |
| Rob 0 (PBcor) | UVtap (PBcor) |
B Configuration*
L-Band
| High Resolution | Low Resolution |
|---|---|
| Total Intensity | |
| Rob 0 (no PBcor) | UVtap (no PBcor) |
| Rob 0 (PBcor) | UVtap (PBcor) |
| B/L to C/C SPECTRAL INDEX | |
| Rob 0 (PBcor) | UVtap (PBcor) |
| B/L to C/C SPECTRAL INDEX ERROR | |
| Rob 0 (PBcor) | UVtap (PBcor) |
Hα Images
Hα fits image download - Vargas et al. 2019 (CHANG-ES XVII)
Note:
Images are in units of DN (raw counts; *NOT* counts per second), with the exception of NGC 4217 and NGC 5907 which are in units of emission measure. Conversion factors for the flux in units of erg/s/cm/cm are given in the table below.
| Galaxy | Flux Conversion Factor |
|---|---|
| NGC 660 | 1.854E-19 |
| NGC 2613 | 2.236E-19 |
| NGC 2683 | 2.732E-19 |
| NGC 2820 | 2.006E-19 |
| NGC 2992 | 2.217E-19 |
| NGC 3003 | 3.039E-19 |
| NGC 3044 | 3.632E-19 |
| NGC 3079 | 2.083E-19 |
| NGC 3432 | 2.326E-19 |
| NGC 3448 | 2.064E-19 |
| NGC 3556 | 2.565E-19 (east field) 2.533E-19 (west field) |
| NGC 3628 | 2.555E-19 (east field) 3.374E-19 (central field) 3.111E-10 (west field) |
| NGC 3735 | 2.289E-19 |
| NGC 3877 | 2.349E-19 |
| NGC 4013 | 2.495E-19 |
| NGC 4096 | 4.584E-19 |
| NGC 4157 | 6.104E-19 |
| NGC 4192 | 6.169E-20 |
| NGC 4217 (See above note) | 2.021E-18 |
| NGC 4302 | 2.02E-18 |
| NGC 4388 | 2.145E-19 |
| NGC 4438 | Unavailable |
| NGC 4666 | 2.032E-19 |
| NGC 4845 | 2.232E-19 |
| NGC 5297 | 2.447E-19 |
| NGC 5792 | 2.663E-19 (east field) 4.050E-19 (west field) |
| NGC 5907 (See above note) | 2.021E-18 |
The exposure time is factored into the conversion factors belowand an extinction coefficient of k = 0.1 is assumed. The conversions include a correction for airmass, however, do not include a correction for NII (NII contamination is likely quite small).
Note: in multi-field galaxies where only one conversion is listed, the conversion is consistent in all fields
Polarization Images
See Krause, M., et al. 2020 (CHANG-ES XXII) for details of these images.
Total Intensity fits image download
Intrinsic Polarization Angle fits image download
Degree of Polarization fits image download
Polarization Intensity fits image download
Rotation Measure fits image download
Rotation Measure Error fits image download
* + B Array L-Band to C Array C-Band Spectral Index Maps