The Herschel SPIRE Instrument Dave Clements, Imperial College London Matt Griffin, SPIRE PI, Cardiff University Schloss Braunschardt 19/3/09

SPIRE – Far-IR Photometer and Spectrometer SPIRE consists of two sub-instruments A three colour far-IR Camera Simultaneous images at 250, 350, 500 microns: first time these wavelengths have been explored from space Also parallel mode with PACS An imaging spectrometer Wavelength range 200-670 microns: first spectral coverage from sapce Simultaneous coverage of full wavelength range For both sub-instruments detectors at 0.3K, optics and mechanisms at 2K and 5K The SPIRE Instrument | Dave Clements | Herschel | Pag. 2 > SPIRE undergoing lab testing

SPIRE consists of two sub-instruments

A three colour far-IR Camera

Simultaneous images at 250, 350, 500 microns: first time these wavelengths have been explored from space

Also parallel mode with PACS

An imaging spectrometer

Wavelength range 200-670 microns: first spectral coverage from sapce

Simultaneous coverage of full wavelength range

For both sub-instruments detectors at 0.3K, optics and mechanisms at 2K and 5K

From cosmology to planet formation What the Photometer Will do? Cosmology Find the missing 50% of energy generation in the universe Galaxies evolve very differently in optical and far-IR, with many more far-IR bright objects early on, hiding 50% of energy generation. SPIRE will find and study them. Star and Planet Formation Star and planet formation is inherently dusty phenomenon - SPIRE will find and determine properties of protostars and planetary debris disks The SPIRE Instrument | Dave Clements | Herschel | Pag. 2 > SPIRE’s scientific targets SPIRE/PACS

What the Photometer Will do?

Cosmology

Find the missing 50% of energy generation in the universe

Galaxies evolve very differently in optical and far-IR, with many more far-IR bright objects early on, hiding 50% of energy generation. SPIRE will find and study them.

Star and Planet Formation

Star and planet formation is inherently dusty phenomenon

- SPIRE will find and determine properties of protostars and planetary debris disks

From cosmology to planet formation SPIRE Spectrometer: Exploring molecules in space Rich and largely unexplored range of spectral lines in far-IR/submm SPIRE Spectrometer will provide our first chance to study this region Look for water and CO lines Look for complex organic molecules Examine the mineralogy of interplanetary and intersteller dust Survey instrument so not aimed at individual known lines so discovery potential is huge The SPIRE Instrument | Dave Clements | Herschel | Pag. 2 > SPIRE Spectrometer targets

SPIRE Spectrometer: Exploring molecules in space

Rich and largely unexplored range of spectral lines in far-IR/submm

SPIRE Spectrometer will provide our first chance to study this region

Look for water and CO lines

Look for complex organic molecules

Examine the mineralogy of interplanetary and intersteller dust

Survey instrument so not aimed at individual known lines so discovery potential is huge

Handy fact: The SPIRE Photometer can detect power of a 100W lightbulb a million km away - or a low energy bulb (20W) on the Moon. Herschel Blog: http://herschelmission.wordpress.com/ THANK YOU Dave Clements [email_address]

Dave Clements [email_address]