Featured Research

from universities, journals, and other organizations

Astronomers Discover New Star In Southern Cross

Date:
January 29, 2007
Source:
Swarthmore College
Summary:
A research team at Swarthmore College discovered a previously unknown companion to the bright star, beta Crucis, in the Southern Cross. As a prominent member of the well-known constellation Crux, or the Southern Cross, it appears on five national flags: Australia, Brazil, New Zealand, Papua New Guinea, and Samoa.

Clockwise, the Southern Cross is prominently displayed on Australia's flag, with beta Crucis just right of the Union Jack; an optical image of the Southern Cross, with beta Crucis indicated by the yellow rectangle and its newly discovered companion shown at the lower left; the Chandra image is color coded, with high energy x-rays colored blue, medium energy x-rays colored green, and lower energy x-rays colored red.
Credit: Image courtesy of Swarthmore College

A research team at Swarthmore College discovered a previously unknown companion to the bright star, beta Crucis, in the Southern Cross. As a prominent member of the well-known constellation Crux, or the Southern Cross, it appears on five national flags: Australia, Brazil, New Zealand, Papua New Guinea, and Samoa. The discovery was announced at the American Astronomical Society meeting held in Seattle January 5-10.

The companion star was discovered accidentally while the research team was using the orbiting Chandra X-ray Observatory to study the x-rays emitted by beta Crucis itself. "We were interested in how the highly supersonic stellar winds of hot, luminous stars produce x-rays," says team leader David Cohen, asssociate professor of astronomy. "We were surprised to see two strong x-ray sources where we had expected to see only one."

Astrophysics major Michael Kuhn '07 of Charlottesville, Va., presented the findings in Seattle. His work analyzing the x-ray data from both beta Crucis and its newly-discovered companion is the basis in a forthcoming paper on this project for the Monthly Notices of the Royal Astronomical Society.

Cohen' s research team also includes Swarthmore College Associate Professor of Astronomy Eric Jensen and Marc Gagné, assistant professor in the geology and astronomy department at West Chester University of Pennsylvania. Their project was funded by NASA and by a Eugene M. Lang Summer Research Fellowship from Swarthmore.

Located near Philadelphia, Swarthmore is a highly selective liberal arts college whose mission combines academic rigor with social responsibility. Swarthmore, with an enrollment of 1,450, is consistently ranked among the top liberal arts colleges in the country.


Story Source:

The above story is based on materials provided by Swarthmore College. Note: Materials may be edited for content and length.


Cite This Page:

Swarthmore College. "Astronomers Discover New Star In Southern Cross." ScienceDaily. ScienceDaily, 29 January 2007. <www.sciencedaily.com/releases/2007/01/070128143435.htm>.
Swarthmore College. (2007, January 29). Astronomers Discover New Star In Southern Cross. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2007/01/070128143435.htm
Swarthmore College. "Astronomers Discover New Star In Southern Cross." ScienceDaily. www.sciencedaily.com/releases/2007/01/070128143435.htm (accessed October 21, 2014).

Share This



More Space & Time News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Comet Siding Spring Grazes Mars' Atmosphere

Comet Siding Spring Grazes Mars' Atmosphere

Newsy (Oct. 19, 2014) — A comet from the farthest reaches of the solar system passed extremely close to Mars this weekend, giving astronomers a rare opportunity to study it. Video provided by Newsy
Powered by NewsLook.com
Latin America Launches Communications Satellite

Latin America Launches Communications Satellite

AFP (Oct. 17, 2014) — Argentina launches a home-built satellite, a first for Latin America. It will ride a French-made Ariane 5 rocket into orbit, and will provide cell phone, digital TV, Internet and data services to the lower half of South America. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
This Week @ NASA, October 17, 2014

This Week @ NASA, October 17, 2014

NASA (Oct. 17, 2014) — Power spacewalk, MAVEN’s “First Light”, Hubble finds extremely distant galaxy and more... Video provided by NASA
Powered by NewsLook.com
Saturn's 'Death Star' Moon Might Have A Hidden Ocean

Saturn's 'Death Star' Moon Might Have A Hidden Ocean

Newsy (Oct. 17, 2014) — The smallest of Saturn's main moons, Mimas, wobbles as it orbits. Research reveals it might be due to a global ocean underneath its icy surface. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins