RADIO ASTRONOMY INTERSELLAR MOLECULES AND ASTROCHEMISTRY IAU 2015 Jack Welch University of California Berkeley The 10 Foot Dish on the Roof of Cory Hall at UC Berkeley S Silver DD Thornton WJ Welch ID: 548249
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THE GOLDEN AGE OF RADIO ASTRONOMY:INTERSELLAR MOLECULES AND ASTROCHEMISTRY
IAU 2015
Jack Welch, University of California BerkeleySlide2
The 10 Foot Dish on the Roof of Cory Hall at UC Berkeley S. Silver, D.D. Thornton, W.J. WelchSlide3
First High Frequency Measurement of Jovian BrightnessFrom G. Kuiper’s model, we found:
D.D. Thornton, W.J. Welch Icarus
2
, 228 (1963)Slide4
1967The Long Awaited6m Whitaker AntennaSlide5
NH3 in Jupiter - Why not NH3 in the ISM? “Take the wisdom of your colleagues with a grain of salt.”Slide6
Detection of Polyatomic Moleculesin the Interstellar MediumNH3
SGR B2
SGR
A
H
2
O
SGR B2
Orion
W49
Nature
221
, 626 (1969)
Cheung, Rank, Townes, Thornton, Welch
PhysRevLett
21
, 1701 (1968)
Slide7
Molecules are Abundant in the ISM16OH18OH14NH
3
H
2
12
C
16
O
H
2
13
C
16
O
Xogen
H
12
C
14
N
H
13
C
14
N
Rank, Townes, Welch, Science
174
, 1083 (1971)
12
C
16
O
13
C
16
O
12
CH
3
16
OH
HISlide8
Location of Molecular Clouds in the GalaxyRank, Townes, Welch Science 174, 1083 (1971)Slide9
Interferometry Is Essential to Understand the Small Scale Structure ofWater Vapor Sources R. Hills, M.A. Janssen, D.D. Thornton, W.J. Welch, ApJ,175, L59 (1972)
H
2
O
OHSlide10
Interferometry and Spectral Dataof VenusM. A. Janssen, R.E. Hills, D.D. Thornton, W.J. Welch, Science,179,994 (1973)Slide11
Astrochemistry TodayTom Millar – TIARA Astrobiology Workshop, June 2015Slide12
184 Molecules – June 2015Tom Millar – TIARA Astrobiology Workshop, June 2015