sirtf nasa’s space infrared telescope facility alyssa a. goodman professor of astronomy harvard...
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SIRTFNASA’s Space InfraRed Telescope
Facility
Alyssa A. GoodmanProfessor of Astronomy
Harvard University
It’s not always so cold in space…
“Revenge is a dish best served cold,
and it’s very cold in space.”--Khan
Observatories for Any “Temperature”
Wavelength
NASA’s Great Observatories
What wavelengths are easy to observe from the ground?
The Electromagnetic Spectrum
LOW TO HIGH ENERGY
SIRTFSIRTF
Infrared Life
The “Thermal” (or “Far”) Infrared
Tem
pera
ture
, de
g F
“Emission” from aCold-blooded Lizard
Optical Image
Far-Infrared Image
“Room Temperature”
Emission & Absorption
Emitter
Absorber
“Emission”
“Absorption”
Emission
Emitter “Emission”
Absorption
Absorber “Absorption”
Not all Wavelengths are Absorbed Equally
“Dust Grain”
“DustGrain”
Light is “Extinguished”& Does not Reach Us
Light Goes Right by& Reaches Us
Near-Infrared
Optical
SIRTFNASA’s Space InfraRed Telescope
Facility
“Great Observatory” for Near- and Far-Infrared Astronomy
Real Star Formation
Today’s Tour: Optical and Infrared Views of Orion
(Images prepared for upcoming “L-30 Press Briefing at NASA HQ, March 25,
2003)
Simulated Star Formati
on
SIRTF “L-30” Press Conference
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Nebula
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Far-infrared Image
Orion
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Hubble Space Telescope Image
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Near-infrared Image
SIRTFNASA’s Space InfraRed Telescope
Facility
Alyssa A. GoodmanProfessor of Astronomy
Harvard University
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