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Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

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Page 1: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Comets and Asteroids from UKIRT

(A personal journey)

John Davies, UK Astronomy Technology Centre

Page 2: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Once upon a time…….

….there was a young telescope and a young astronomer.

Page 3: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

1983TB (3200 Phaethon)

Page 4: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

1993TB (3200 Phaethon) Stone or Snowball?

Page 5: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

NEATM

Page 6: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Asteroid mineralogy with CGS4

Page 7: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

5145 Pholus (and friends)

• Discovered in 1992 (5145) Pholus joined 2060 Chiron as the 2nd known Centaur (outer planet crossing) object.

• UKIRT service observations at JHK confirmed optical observations that it was very red with V-J= 2.58

Page 8: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

5145 Pholus: First IR Spectrum

(Thanks Gillian)

Page 9: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

5145 Composition

Page 10: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Other Centaurs

Page 11: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Other Strange Asteroids

1993 PW Oort Cloud asteroid? 1998 WU24 Dormant Comet?

Page 12: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Comet Spectroscopy

Page 13: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Organics in Comet Swift-Tuttle

Page 14: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Water in Comet Hale-Bopp

Page 15: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Hale Bopp: CGS3 vs ISO

Page 16: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Trans-Neptunian Objects: Faint and moving

Page 17: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Trans-Neptunian Objects: Faint and moving

Big thanks to ORAC, ORACDR and Malcolm Currie

Page 18: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Trans-Neptunian Objects: Searching for Trends

Page 19: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Other Highlights

• Comet IRAS-Araki-Alcock• H3+ in Jupiter and Saturn • Spectroscopy of Giant planet moons, eg

ices on Triton and Pluto• The great comet crash (spectroscopy)• Water in main belt Asteroids

Page 20: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Where next?

Page 21: Comets and Asteroids from UKIRT€¦ · Comets and Asteroids from UKIRT (A personal journey) John Davies, UK Astronomy Technology Centre

Dedication: To all my friends in Hawaii, especially those who made UKIRT the greatest infrared

telescope in the world