FOREGROUND GALACTIC EXTINCTION for NGC 6921 (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map. The map is based on dust emission from COBE/DIRBE and IRAS/ISSA; the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.
| L a n d o l t | S D S S | U K I R T |
Filter [µm] | U (0.35) | B (0.43) | V (0.54) | R (0.64) | I (0.80) | u (0.36) | g (0.47) | r (0.62) | i (0.75) | z (0.89) | J (1.25) | H (1.66) | K (2.19) | L' (3.78) |
Aλ [mag] | 1.918 | 1.605 | 1.213 | 0.960 | 0.666 | 1.876 | 1.462 | 1.011 | 0.751 | 0.559 | 0.314 | 0.199 | 0.134 | 0.068 |
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
Bandpass [µm] | Aλ [mag] |
Landolt | U | (0.35) | 1.918 |
Landolt | B | (0.43) | 1.605 |
Landolt | V | (0.54) | 1.213 |
Landolt | R | (0.64) | 0.960 |
Landolt | I | (0.80) | 0.666 |
CTIO | U | (0.37) | 1.817 |
CTIO | B | (0.43) | 1.611 |
CTIO | V | (0.55) | 1.187 |
CTIO | R | (0.65) | 0.938 |
CTIO | I | (0.80) | 0.671 |
UKIRT | J | (1.25) | 0.314 |
UKIRT | H | (1.66) | 0.199 |
UKIRT | K | (2.19) | 0.134 |
UKIRT | L' | (3.78) | 0.068 |
Gunn | g | (0.52) | 1.290 |
Gunn | r | (0.66) | 0.909 |
Gunn | i | (0.79) | 0.688 |
Gunn | z | (0.91) | 0.546 |
Spinrad | R_S | (0.69) | 0.850 |
Stromgren | u | (0.35) | 1.905 |
Stromgren | b | (0.47) | 1.482 |
Stromgren | v | (0.41) | 1.679 |
Stromgren | beta | (0.49) | 1.409 |
Stromgren | y | (0.55) | 1.189 |
SDSS | u | (0.36) | 1.876 |
SDSS | g | (0.47) | 1.462 |
SDSS | r | (0.62) | 1.011 |
SDSS | i | (0.75) | 0.751 |
SDSS | z | (0.89) | 0.559 |
DSS-II | g | (0.46) | 1.496 |
DSS-II | r | (0.65) | 0.924 |
DSS-II | i | (0.81) | 0.658 |
PS1 | g | (0.49) | 1.404 |
PS1 | r | (0.62) | 1.005 |
PS1 | i | (0.75) | 0.744 |
PS1 | z | (0.87) | 0.585 |
PS1 | y | (0.97) | 0.481 |
PS1 | w | (0.62) | 1.036 |
LSST | u | (0.37) | 1.834 |
LSST | g | (0.48) | 1.432 |
LSST | r | (0.62) | 1.006 |
LSST | i | (0.75) | 0.745 |
LSST | z | (0.87) | 0.585 |
LSST | y | (0.97) | 0.481 |
WFPC2 | F300W | (0.31) | 2.169 |
WFPC2 | F450W | (0.46) | 1.509 |
WFPC2 | F555W | (0.54) | 1.219 |
WFPC2 | F606W | (0.60) | 1.069 |
WFPC2 | F702W | (0.69) | 0.862 |
WFPC2 | F814W | (0.79) | 0.685 |
WFC3 | F105W | (1.04) | 0.429 |
WFC3 | F110W | (1.12) | 0.390 |
WFC3 | F125W | (1.23) | 0.321 |
WFC3 | F140W | (1.37) | 0.271 |
WFC3 | F160W | (1.53) | 0.227 |
WFC3 | F200LP | (0.55) | 1.309 |
WFC3 | F218W | (0.22) | 3.434 |
WFC3 | F225W | (0.24) | 3.093 |
WFC3 | F275W | (0.27) | 2.428 |
WFC3 | F300X | (0.29) | 2.314 |
WFC3 | F336W | (0.34) | 1.971 |
WFC3 | F350LP | (0.59) | 1.161 |
WFC3 | F390W | (0.40) | 1.724 |
WFC3 | F438W | (0.43) | 1.603 |
WFC3 | F475W | (0.48) | 1.437 |
WFC3 | F475X | (0.50) | 1.379 |
WFC3 | F555W | (0.53) | 1.263 |
WFC3 | F600LP | (0.74) | 0.788 |
WFC3 | F606W | (0.59) | 1.101 |
WFC3 | F625W | (0.62) | 1.000 |
WFC3 | F775W | (0.76) | 0.727 |
WFC3 | F814W | (0.80) | 0.680 |
WFC3 | F850LP | (0.91) | 0.535 |
ACS | clear | (0.62) | 1.078 |
ACS | F435W | (0.43) | 1.598 |
ACS | F475W | (0.48) | 1.446 |
ACS | F550M | (0.56) | 1.159 |
ACS | F555W | (0.54) | 1.236 |
ACS | F606W | (0.59) | 1.094 |
ACS | F625W | (0.63) | 0.982 |
ACS | F775W | (0.77) | 0.721 |
ACS | F814W | (0.80) | 0.675 |
ACS | F850LP | (0.90) | 0.550 |
DES | g | (0.48) | 1.432 |
DES | r | (0.64) | 0.963 |
DES | i | (0.78) | 0.706 |
DES | z | (0.91) | 0.539 |
DES | Y | (0.99) | 0.468 |
For completeness, we include the original SFD98 values:
| L a n d o l t | S D S S | U K I R T |
Filter [µm] | U (0.34) | B (0.44) | V (0.54) | R (0.65) | I (0.81) | u (0.35) | g (0.49) | r (0.63) | i (0.78) | z (0.93) | J (1.27) | H (1.67) | K (2.22) | L' (3.81) |
Aλ [mag] | 2.419 | 1.921 | 1.476 | 1.190 | 0.864 | 2.295 | 1.689 | 1.225 | 0.929 | 0.658 | 0.402 | 0.256 | 0.163 | 0.068 |
See Notes on Galactic Extinction for important caveats.
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