Discover
/
Article

Puzzle of SS433: both a blue shift and a red shift

AUG 01, 1979

Recent observations confirm that a fourteenth‐magnitude “peculiar” star in our galaxy is a bizarre object indeed, the like of which has not been seen before. Its spectrum exhibits hydrogen (Balmer) and helium emission lines with red and blue shifts indicating velocities up to 50 000 km/sec (0.17c), and these shifts vary roughly sinusoidally with a period of 164 days. The shifting lines are themselves comparatively narrow. The spectrum also contains unshifted hydrogen and helium lines.

This article is only available in PDF format

Related content
/
Article
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
/
Article
/
Article
After a foray into international health and social welfare, she returned to the physical sciences. She is currently at the Moore Foundation.
/
Article
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
This Content Appeared In
pt-cover_1979_08.jpeg

Volume 32, Number 8

Get PT 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.