Multiwavelength Astronomy: Your World in Different Light

Image from NASA

Infrared Dog

• False color images of a dog photographed in the infrared

• Which parts are hottest? Coolest? Can you normally tell just by looking?

Image from Cool Cosmos

X-Ray Challenge

• This X-Ray image was taken of a closed object.

• What ordinary object do you think this is?

• What are the bright areas made of?

max =3,000,000 (K•nm)Temperature (K)

max: wavelength of maximum intensity (in nanometers)K: Kelvinnm: nanometers

Galaxy Features

X-Ray: Hot Gas Radio: Cool Gas

Visible:Most Other Stars

Ultraviolet:Young, Hot Stars

Infrared:Dust

This is a galaxy called M33 viewed in 5 different wavelengths…

Multiwavelength Astronomy

Galaxies in Different Light

Multiwavelength Astronomy

Crab Nebula

Crab (VLT)

U5 (UIT) X4 (Chandra)

F7 (Herschel) R9 (NRAO)

Multiwavelength Astronomy

Centaurus A

Centaurus A (NOAO)

X3 (Chandra)

F8 (Herschel)

M7 (Spitzer)

R7 (NRAO)

Multiwavelength Astronomy

Antennae

Antennae (Hubble)

X5 (Chandra)

F1 (Herschel)

M6 (Spitzer)

R8 (VLA)

Multiwavelength Astronomy

Cassiopeia A

Cassiopeia A (Hubble)

X6 (Chandra)

F2 (Herschel)

M2 (Spitzer)

R11 (NRAO)

Multiwavelength Astronomy

Large Magellanic Cloud

LMC (AAO)

U4 (Rocket) X1 (ROSAT)

F3 (Herschel) R10 (RAIUB)

Multiwavelength Astronomy

Triangulum

Triangulum (INT)

U1 (UIT) X8 (ROSAT)

M4 (Spitzer) R2 (NRAO)

Multiwavelength Astronomy

Orion

Orion (Hubble)

X2 (XMM)

F9 (Planck)M3 (Spitzer)

N1 (VISTA)

Multiwavelength Astronomy

M81

M81 (Gendler)

U2 (UIT) X12 (Chandra)

F5 (Herschel) R1 (VLA)

Multiwavelength Astronomy

M87

M87 (AAT)

X9 (Chandra)

F4 (Herschel)

M5 (IRAS)

R4 (NRAO)

Multiwavelength Astronomy

Sombrero

Sombrero (Hubble)

X10 (Chandra)

M1 (Spitzer)

N2 (2MASS)

R3 (VLA)

Multiwavelength Astronomy

M82

M82 (Gendler)

X11 (Chandra)

F6 (Herschel) R5 (VLA/Merlin)

M8 (Spitzer)

Multiwavelength Astronomy

Andromeda

Andromeda (Gendler)

U3 (GALEX) X7 (XMM-Newton)

F10 (Herschel) R6 (Effelsberg)