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Infrared Astronomy in the heat of the night Michael Burton
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Infrared Astronomy ◊What is the infrared ◊Infrared Science Imaging Spectroscopy ◊History and the Future ◊Infrared Movies ◊What is the infrared ◊Infrared Science Imaging Spectroscopy ◊History and the Future ◊Infrared Movies
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William Herschel “Calorific Rays” in 1800
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Infrared is Heat Thermal Radiation
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Two views of a geyser
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1.Dust Extinction Exploring the hidden universe Galactic CentreCygnu s
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2. Thermal Radiation Detecting Cool Objects
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3. Redshift Exploring the Early Universe
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Atmospheric Windows
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Infrared Windows
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IR Observatories on the ground, in the air and in space
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The Horsehead Nebula VisibleNear-IRMid-IR
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Massive Star Formation Triffid Nebula
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The Galactic Centre VisibleNear-IR
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Three Spectral Regimes Detector Technology
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Some infrared science ◊Solar System ◊Star Formation ◊Stars ◊Disks and Planets ◊Galaxies ◊Solar System ◊Star Formation ◊Stars ◊Disks and Planets ◊Galaxies
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Venus Infrared emission vs. Visible reflection
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Jupiter Bright belts, volcanic Io, methane absorption
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Star Formation Orion Constellation Far-IR Dust Orion Nebula Near-IR Young Stars Nearby Globule Mid-IR Dust + Protostars
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Massive Stars ◊Pistol Star Most luminous star in Galaxy ~10 7 L ◊Quintuplet Cluster Most massive star cluster in Galaxy Max mass of a star?
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Dust Disks and Planets Beta Pictoris HR4796A
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The Galaxy Near + mid-IR Galactic Centre Red Giants + Hot Dust Far--IR Galactic Plane Zodiacal Light + Warm Dust
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Other Galaxies: Spiral M81 ◊Old Stars (blue) ◊Heated Dust (red) ◊Hot Dust and MSF (green + knots)
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Global Star Formation Spiral Galaxy M51
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Hidden Black Holes in the IR
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Infrared Spectroscopy ◊Cooling Lines Molecules Fine structure lines ◊Ices ◊Dust ◊Cooling Lines Molecules Fine structure lines ◊Ices ◊Dust
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Infrared Spectroscopy Water in the Solar System Hydrocarbons, Ices, Dust mineralology
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Cooling Lines in the ISM [OI] 63µm + [CII] 158µm
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Cooling Lines across the Galaxy [CII] 158µm + [NII] 205µm
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Water and Ices in Molecular Clouds
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Elements and Minerals in Red Giants and PN winds Recycling of the elements
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Star Formation in the Galactic Centre Hot massive stars, ionized gas, ~10 7 yrs
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Molecules in Dusty Galaxies Spiral NGC891 Starburst Arp 220
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Probing the Excitation of Galaxies
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A potted history of IR astronomy 1800: William Herschel Discovery of IR 1948: Moon must be covered By fine powder 1870: 4th Earl of Rosse Temperature of Moon From IR on dark side 1856: Charles Piazzi IR from the Moon Thermocouple & heat
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IR Facilities: the early days 1967: Mauna Kea Observatory established High & dry! 1967: Cooled IR telescopes in rockets AFGL IR sky survey 4+10+20µm 2363 sources in 30 mins 1960’s: Balloons carry high altitude payloads 1961: Frank Low Germanium bolometer Cooled, in dewar Detect far-IR Change in conductivity
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IR Facilities Develop Mid 1970’s: Far-IR spectrometers from balloons at T = 1K CMBR Early 1970’s: Most galaxies found to emit strongly in IR (M31) 1974: Kuiper Airborne Observatory Rings of Uranus Water in Jupiter 1968: Leighton & Neugebauer Mt Wilson 2.2µm IR survey 5,500 sources
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IR Facilities Mature 1989: COBE MM + Far-IR sky CMBR 1985: IR telescope on Shuttle 1983: IRAS satellite 12+25+60+100µm 500,000 sources Vega Disk ULIRGs 1980’s: IR arrays
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IR in the 90s 1996: MSX Military satellite 8+11+14+21µm 1996: DENIS Near-IR sky survey La Silla, Chile 1995: ESA ISO 2.5-240µm + spectroscopy 1994: SPIREX at the South Pole
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IR Astronomy Today 2004: Spitzer Space Telescope 2001: Keck Interferometer 1997: NICMOS on HST 1-2.5µm 1997: 2MASS All-sky 1.2 + 1.6 + 2.2µm
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IR Astronomy Tomorrow 2???: TPF/Darwin Other Earths?! 2008?: Planck CMBR 2008?: Herschel - far-IR 2007?: SOFIA - IR spectroscopy
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Infrared Astronomy for Australia ◊Siding Spring Observatory AAT/IRIS1-2.5µm Imager/Spectrometer 2.3m/CASPIR1-5µm Imager ◊Gemini 1-5µm NIFS + 8-25µm Michelle / TReCS ◊Public Databases 2MASS (1-2µm), MSX (8-21µm), GLIMPSE (4- 8µm), IRAS (12-100µm) ◊Antarctica Finest ground-based sites on the Earth! ◊Siding Spring Observatory AAT/IRIS1-2.5µm Imager/Spectrometer 2.3m/CASPIR1-5µm Imager ◊Gemini 1-5µm NIFS + 8-25µm Michelle / TReCS ◊Public Databases 2MASS (1-2µm), MSX (8-21µm), GLIMPSE (4- 8µm), IRAS (12-100µm) ◊Antarctica Finest ground-based sites on the Earth!
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Dark Cloud + HH46-47 Optical to Infrared (Spitzer)
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Dark Globule IC1396 Visible to Infrared (Spitzer)
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Massive Star Formation Triffid: Visible to IR (Spitzer)
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Spiral Galaxy M51 Visible to Infrared (Spitzer)
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2MASS 1-2µm View Galactic Centre
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MSX 8-21µm view of the Galaxy PAHs along the Milky Way
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Eta Carina Star Forming Complex
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