Erosion, Landfill & Politics in Interstellar Space
Erosion, Landfill & Politics
At 9 P.M., I hope you have some idea of: What we understand about how stars like the Sun form, and how we came to this understanding
What we understand
What we also understand, but donít always admit
Even though itís now right before our eyes
How we came to our ìmodernî understanding
Ideas 1900-2000
Ideas: 1900-1948
Dust, Not Holes
Time Showed Barnard was Right!
Stellar Evolution from Spectroscopy: The Hertzprung-Russell Diagram
ìThe Possibility of Star Formationî
Bokís Globules
1948-49
What Happened around 1950?
Suddenly, by 1952 ìStar Formationî was a Respectable Term & Subject!
Tutorial: Velocity from Spectroscopy
Bokís Dream: Radio Spectral-line Observations of Interstellar Clouds
And someone had to pay for it...
1957 H I Spectroscopy
Ideas: 1952-1975
Star Formation c. 1953
Star Formation in 1953
HH Objects
ìGiantî Herbig-Haro Flows: PV Ceph
Velocity as a "Fourth" Dimension
ìIntegrated Intensity Mapî
Ideas: 1975-1985
The Story, c. 1990
Molecular Clouds "Created" by Supernovae
Star Formation Triggered by A Galaxy Collision
The Star-Forming Interstellar Medium
Ideas: 1985-now
Do Magnetic Fields Explain Everything?
Erosion
PPT Slide
My Ideas
The Spectral Correlation Function
Strong vs. Weak B-Field
The Superstore Learning More from ìToo Muchî Data
How the SCF Works
Which one of these is not like the others?
A New Proposal: Episodic ejections from precessing or wobbling moving source
PV Ceph
How much of a molecular cloud complex was ìmovedî to its present location by an outflow?
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Astronomy Politics and Funding
NASAís Origins Program
Email: agoodman@cfa.harvard.edu
Home Page: http://cfa-www.harvard.edu/~agoodman
Other information: Harvard University Science Center Research Lecture Series April 12, 2000
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