December 27, 2010
But some cool stars have different spectra, dominated by carbon-containing molecules, such as CH, CN, and C2. These spectral features signal a rare condition in which carbon is more abundant than oxygen, which is why these objects are called carbon stars.
Close-up of stars in the Milky Way Galaxy.
Photo by NASA and H. Richer (University of British Columbia)
You are currently not logged in. This article is only available to Astronomy magazine subscribers.
Already a subscriber to Astronomy magazine?
If you are already a subscriber to Astronomy magazine you must log into your account to view this article. If you do not have an account you will
need to regsiter for one. Registration is FREE and only takes a couple minutes.
Non-subscribers, Subscribe TODAY and save!
Get instant access to subscriber content on Astronomy.com!
- Access our interactive Atlas of the Stars
- Get full access to StarDome PLUS
- Columnist articles
- Search and view our equipment review archive
- Receive full access to our Ask Astro answers
- BONUS web extras not included in the magazine
- Much more!