Biographical Memoirs Volume 72 (1997) / Chapter Skim
Currently Skimming:
WILLIAM WILSON MORGAN
WILLIAM WILSON MORGAN
Pages 288-313
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 289... ...
He macle important contributions to galactic structure, stellar populations, en c! galaxy research.
|
From page 290... ...
Lee University in Lexington, Virginia, it ciatec! back to 1749, en c!
|
From page 291... ...
Wooten spent the summer of 1926 at Yerkes Observatory, the astronomical research center of the University of Chicago. Situated in little Williams Bay on beautiful Lake Geneva, a resort area in southern Wisconsin, it was more to Wooten's taste than Ryerson Physical Laboratory on the campus, where he previously had put in an occasional summer.
|
From page 292... ...
on the "peculiar" A stars, which did not appear to fit into the standard ionization interpretation of stellar atmospheres then being worker! out by theoretical astrophysicists.
|
From page 293... ...
Most show stronger-than-average spectral lines of various heavier elements, inclucling manganese en c! some rare earths.
|
From page 294... ...
. Unlike the Mount Wilson observers he completely separated the spectral type and luminosity classification from the absolute-magnitucle calibration.
|
From page 295... ...
that his two-climensional spectral types en c! luminosity classes were better correlatec!
|
From page 296... ...
SPIRAL ARMS In 1944, just a year after the publication of the MKK atlas, Walter Baacle announcer! his identification of two stellar populations, which soon turner!
|
From page 297... ...
it in the galactic plane. Morgan presented the resulting map at the American Astronomical Society meeting in Clevelanc!
|
From page 298... ...
But he went beyonc! it to the iclea that the number of different spectral types that conic!
|
From page 299... ...
There were also various internal tensions among the senior Yerkes faculty members, which lee! to Struve's resignation en c!
|
From page 300... ...
MK system. STELLAR POPULATIONS Morgan was tremendously stimulated by Baade's invited lectures on his new concept of stellar populations at the American Astronomical Society meeting at Perkins Observatory, Ohio, in December 1947 en c!
|
From page 301... ...
spectral types from them en c! conic!
|
From page 302... ...
In fact, these clusters near the galactic center shower! "normal" strength absorption lines, Morgan insisted, indicating approximately solar-type abundances.
|
From page 303... ...
back to his highly individualistic, paradigm-shattering spectroscopic research on stellar populations in the 1950s. - -a -- -- -7 -- - - -a GALAXIE S Naturally, Morgan was keenly interested!
|
From page 304... ...
the acceptance of his galaxy classification by assigning symbols for form types that were quite different from Hubble's, but were relater! to spectral types, like IS]
|
From page 305... ...
service professor in 1966. Morgan was an excellent teacher in the small classes that the graduate students at Yerkes Observatory took.
|
From page 306... ...
the Bruce Mecial of the Astronomical Society of the Pacific in 195S, the Henry Norris Russell Lectureship of the American Astronomical Society in 1961, en c! the Henry Draper Mecial of the NAS in 1980.
|
From page 307... ...
in showings of historic films at Yerkes Observatory evening social en c! cultural affairs.
|
From page 308... ...
he was thus unofficially the mayor from 1947 to 1951. Morgan was active in the Williams Bay Congregational Church and, particularly in the years after his official retirement, occasionally gave talks on the universe in lieu of sermons.
|
From page 309... ...
D Scott Dittman, registrar of Washington and Lee University, and Maxine Hunsinger Sullivan, registrar of the University of Chicago, very kindly made Morgan's student records (which included synopses of his high school work)
|
From page 310... ...
2. The discovery of the spiral arms of the Milky Way.
|
From page 311... ...
On the interstellar reddening in the region of the north polar sequence and the normal color indices of Atype stars. Astrophys.
|
From page 312... ...
120:506-508. 1956 The integrated spectral types of globular clusters.
|
From page 313... ...
142:1364-65. 1968 A comparison of the optical forms of certain Seyfert galaxies with the N-type radio galaxies.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.