External Data
This page contains links to all-sky maps of foreground emission and to the WMAP 9 year products. In the frequency range covered by Planck (30-857 GHz), Galactic and extra-galactic sources contribute to the observed signal via several mechanisms, most notably free-free (thermal bremsstrahlung) emission, synchrotron radiation, and thermal emission from cold sources. In many regions of the sky signal from foreground sources can dominate over that of the CMB.
These maps show the distribution of structures primarily associated with the Interstellar Medium in our Milky Way Galaxy as viewed in a number of surveys, including those of Balmer line emission of ionized hydrogen, 21 cm emission from neutral hydrogen, CO tracer of dense molecular gas, and the thermal signature of the cold dust that is the significant feature at submillimeter wavelengths.
We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis (LAMBDA), part of the High Energy Astrophysics Science Archive Center (HEASARC). HEASARC/LAMBDA is a service of the Astrophysics Science Division at the NASA Goddard Space Flight Center.
| All-sky maps processed into HEALPix format by Planck Working Group 7 (Galactic and Solar System Science) | |
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COBE DIRBE instrument.
Map band: 1.25 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 2.2 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 3.5 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 4.9 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 12 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 25 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 60 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 100 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 140 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument.
Map band: 240 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 1.25 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 2.2 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 3.5 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 4.9 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 12 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 25 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 60 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 100 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 140 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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COBE DIRBE instrument, Zodi-Subtracted Mission Average Maps.
Map band: 240 microns Map units: Intensity in MJy sr-1 Boggess, N.W. et al. 1992 ApJ 397 420 Download |
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IRIS Reprocessing of IRAS Maps. These are zodi-subtracted.
Map band: 12 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.-A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps. These are zodi-subtracted.
Map band: 25 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.-A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps. These are zodi-subtracted.
Map band: 60 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.-A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps. These are zodi-subtracted.
Map band: 100 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.-A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps, IRAS coverage gaps filled using DIRBE data.
Map band: 12 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps, IRAS coverage gaps filled using DIRBE data.
Map band: 25 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps, IRAS coverage gaps filled using DIRBE data.
Map band: 60 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.A. and Lagache, G. 2005 ApJS 157 302 Download |
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IRIS Reprocessing of IRAS Maps, IRAS coverage gaps filled using DIRBE data.
Map band: 100 microns Map units: Intensity in MJy sr-1 Milville-Deschênes, M.A. and Lagache, G. 2005 ApJS 157 302 Download |
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FIR-derived maps of Galactic interstellar reddening.
Map band: E(B-V) Map units: Magnitudes Schlegel, D.J., Finkbeiner, D.P. and Davis, M. 1998 ApJ 500 525 Download |
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Midcourse Space Experiment Survey.
Map band: [Band A] 8.28 microns Map units: Intensity in W m-2 sr-1 Price, S.D. et al. 2001 AJ 121 2819 Download |
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Leiden-Dwingeloo survey, -7 < DEC < +85.
Map band: 820 MHz Map units: TB (K) Berkhuijsen, E.M. 1972 A&A Suppl Series 5 263 Download |
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Canadian Galactic Plane Survey, Dominion Radio Astronomy Observatory, 74.2 < l < 147.3 and -3.6 < b < 5.6.
Map band: 408 MHz Map units: Intensity in MJy sr-1 Taylor, A.R. et al. 2003 AJ 125 3145 Download |
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408 MHz continuum survey reprocessed by Remazeilles et al. (2015)
Map band: 408 MHz Map units: Intensity in K M. Remazeilles et al., 2015, MNRAS, 451, 4311 Download |
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Combined IRIS+SDF 100 micron map with no point sources
Map band: 100 microns Map units: Intensity in MJy sr-1 Planck Collaboration XI., A&A, 2016, A11, 37 Download |
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Combined IRIS+SDF 100 micron map
Map band: 100 microns Map units: Intensity in MJy sr-1 Planck Collaboration XI., A&A, 2016, A11, 37 Download |
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WISE low resolution full-sky dust map
Map band: 12 microns Map units: Intensity in MJy sr-1 A. Meissner and D. Finkbeiner, 2014, ApJ, 781, 5 Download |
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LAMBDA Products | |
| The following products are available directly from the Legacy Archive for Microwave Background Data Analysis (LAMBDA), part of the High Energy Astrophysics Science Archive Center (HEASARC). HEASARC/LAMBDA is a service of the Astrophysics Science Division at the NASA Goddard Space Flight Center. | |
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Dame CO(1-0) survey.
Map band: 115 GHz Map units: Velocity integrated main beam TB, W(CO), K km s-1. Dame, T.M., Hartmann, D. & Thaddeus, P. 2001 ApJ 547 792 Product Description and Download Page |
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WHAM: The Wisconsin H-alpha Mapper, VTSS: The Virginia Tech Spectral-Line Survey, SHASSA: The Southern H-Alpha Sky Survey Atlas.
Map band: H alpha (6563 A) Map units: Rayleighs [1010 photons per m2 per column per sec] Finkbeiner, D.P. 2003 ApJS 146 407 Product Description and Download Page |
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408 MHz continuum survey, Jodrell Bank MkI, Bonn 100 meter, Parkes 64 meter, Jordell Bank MkIa telescopes.
Map band: 408 MHz Map units: TB (K) Haslam, C.G.T. et al. 1982 A&A Suppl Series 47 1 Product Description and Download Page |
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Neutral hydrogen column density from the Leiden/Dwingeloo HI survey and composite NHI map of Dickey and Lockman.
Map band: 21 cm [1420 MHz] Map units: NHI column density atoms cm-2 Hartmann, D. and Burton, W.B. 1997, Atlas of Galactic Neutral Hydrogen [book]; Dickey, J.M. and Lockman, F.J. 1990 ARA&A 28 215 Product Description and Download Page |
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Neutral hydrogen (21 cm) emission from the Leiden/Dwingeloo HI survey and the Instituto Argentino de Radioastronomia survey.
Map band: 21 cm [1420 MHz] Map units: K Kalbera, P.M.W. et al. 2005 A&A 440 775 Product Description and Download Page |
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WMAP Nine Year Coadded Temperature (Resolution Parameter 9) Sky Maps.
Map band: K [23 GHz], Ka [33 GHz], Q [41 GHz], V [61 GHz], W [94 GHz] Map units: mK_CMB Bennett, C.L. et al. 2012 arXiv:1212.5255 (ApJSS submitted) Product Description and Download Page |
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