/
Article

Quasistellar objects and seyfert galaxies

JAN 01, 1969
Are these two classes of distant objects related? Evolution of dense stellar clusters, so crowded with stars that collisions occur, yielding more massive stars and supernovae, could be the common origin of them both.
Stirling A. Colgate

CONCEPTS of the size and geometry of our observable universe depend largely on what we make of the mysterious, distant quasistellar objects. Seyfert galaxies, which have a bright nucleus at the center of an otherwise normal galaxy, have been another source of mystery. Observations of their optical and radio emissions show fluctuations. If we can find a relation between quasistellar objects and Seyfert galaxies, suggesting a similar origin and an evolutionary link, we may be able to use the fluctuating emission as a new yardstick for the universe.

This article is only available in PDF format

References

  1. 1. E. M. Burbidge, G. R. Burbidge, A. R. Sandage, Rev. Mod. Phys. 35, 947 (1963).https://doi.org/RMPHAT

  2. 2. T. Gold, W. I. Axford, E. C. Ray, Quasistellar Sources and Gravitational Collapse, I. Robinson, A. Schild, E. Schucking, eds., University of Chicago Press (1965), page 93.

  3. 3. L. Woltjer, Nature 201, 803 (1964).https://doi.org/NATUAS

  4. 4. S. M. Ulam, W. E. Walden, Nature 201, 1202 (1964).https://doi.org/NATUAS

  5. 5. L. Spitzer, W. C. Saslaw, Astrophys. J. 143, 400 (1966).https://doi.org/ASJOAB

  6. 6. S. A. Colgate, Astrophys. J. 150, 163 (1967).https://doi.org/ASJOAB

  7. 7. M. Schmidt, Astrophys. J. 151, 393 (1968).https://doi.org/ASJOAB

  8. 8. F. Winsor, Space Child’s Mother Goose, Simon and Schuster (1958).

  9. 9. S. Tsuruta, A. G. W. Cameron, Can. J. Phys. 44, no. 8 (1966).https://doi.org/CJPHAD

  10. 10. R. L. Minkowski, Stars and Stellar Systems, L. H. Aller, B. M. Middlehurst, eds., University of Chicago Press (1967) 7, chapter 11.

  11. 11. E. M. Burbidge, G. R. Burbidge, W. A. Fowler, F. Hoyle, Rev. Mod. Phys. 29, 547 (1957).https://doi.org/RMPHAT

  12. 12. S. A. Colgate, A. G. W. Cameron, Nature 200, 870 (1963).https://doi.org/NATUAS

  13. 13. S. von Hoerner, Symposium on the n‐body problem, Paris, France (August 1967).

  14. 14. F. Seidl, A. G. W. Cameron, to be published.

  15. 15. P. S. De Young, W. I. Axford, Nuovo Cimento LBN2, 199 (1967).

  16. 16. S. A. Colgate, C. McKee, “Supernova Luminosity”, American Astronomical Society Meeting, Charlottesville, Va. (April 1968), to be published.

  17. 17. W. E. Drummond, Phys. Fluids 5, 1133 (1962).https://doi.org/PFLDAS

More about the authors

Stirling A. Colgate, New Mexico Institute of Mining and Technology.

Related content
/
Article
Since 2008, more than 100 colleges and universities in the US have stopped offering an undergraduate physics major. What happened?
/
Article
The thermodynamic and quantum mechanical properties of topological insulators provide a path toward scalable energy storage in information-based batteries.
/
Article
At the end of the turbulent 1960s, the postwar funding boom in US physics came to a crashing halt. The lessons learned then may be helpful to today’s physicists.
/
Article
Interviews with 22 successful early-career physical scientists and engineers reveal that networking has been one of the most critical ways to nurture their careers.
This Content Appeared In
pt-cover_1969_01.jpeg

Volume 22, Number 1

Get PT newsletters in your inbox

pt_newsletter_card_blue.png
PT The Week in Physics

A collection of PT's content from the previous week delivered every Monday.

pt_newsletter_card_darkblue.png
PT New Issue Alert

Be notified about the new issue with links to highlights and the full TOC.

pt_newsletter_card_pink.png
PT Webinars & White Papers

The latest webinars, white papers and other informational resources.

By signing up you agree to allow AIP to send you email newsletters. You further agree to our privacy policy and terms of service.