Featured Research

from universities, journals, and other organizations

The wings of the Seagull Nebula

Date:
February 6, 2013
Source:
European Southern Observatory (ESO)
Summary:
A new image from the European Southern Observatory shows a section of a cloud of dust and glowing gas called the Seagull Nebula. These wispy red clouds form part of the "wings" of the celestial bird and this picture reveals an intriguing mix of dark and glowing red clouds, weaving between bright stars.

This new image from ESO shows a section of a cloud of dust and glowing gas called the Seagull Nebula. These wispy red clouds form part of the “wings” of the celestial bird and this picture reveals an intriguing mix of dark and glowing red clouds, weaving between bright stars. This new view was captured by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile.
Credit: Image courtesy of ESO

A new image from the European Southern Observatory (ESO) shows a section of a cloud of dust and glowing gas called the Seagull Nebula. These wispy red clouds form part of the "wings" of the celestial bird and this picture reveals an intriguing mix of dark and glowing red clouds, weaving between bright stars. This new view was captured by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile.

Related Articles


Running along the border between the constellations of Canis Major (The Great Dog) and Monoceros (The Unicorn) in the southern sky, the Seagull Nebula is a huge cloud mostly made of hydrogen gas. It's an example of what astronomers refer to as an HII region. Hot new stars form within these clouds and their intense ultraviolet radiation causes the surrounding gas to glow brightly.

The reddish hue in this image is a telltale sign of the presence of ionised hydrogen [1]. The Seagull Nebula, known more formally as IC 2177, is a complex object with a bird-like shape that is made up of three large clouds of gas -- Sharpless 2-292 (eso1237) forms the "head," this new image shows part of Sharpless 2-296, which comprises the large "wings," and Sharpless 2-297 is a small, knotty addition to the tip of the gull's right "wing" [2].

These objects are all entries in the Sharpless nebula catalogue, a list of over 300 glowing clouds of gas compiled by American astronomer Stewart Sharpless in the 1950s. Before he published this catalogue Sharpless was a graduate student at the Yerkes Observatory near Chicago, USA, where he and his colleagues published observational work that helped to show that the Milky Way is a spiral galaxy with vast, curved arms.

Spiral galaxies can contain thousands of HII regions, almost all of which are concentrated along their spiral arms. The Seagull Nebula lies in one of the spiral arms of the Milky Way. But this is not the case for all galaxies; while irregular galaxies do contain HII regions, these are jumbled up throughout the galaxy, and elliptical galaxies are different yet again -- appearing to lack these regions altogether. The presence of HII regions indicates that active star formation is still in progress in a galaxy.

This image of Sharpless 2-296 was captured by the Wide Field Imager (WFI), a large camera mounted on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile. It shows only a small section of the nebula, a large cloud that is furiously forming hot stars in its interior. The frame shows Sharpless 2-296 lit up by several particularly bright young stars -- there are many other stars scattered across the region, including one so bright that stands out as the gull's "eye" in pictures of the entire complex.

Wide-field images of this region of the sky show a multitude of interesting astronomical objects. The young bright stars within the nebula are part of the nearby star-forming region of CMa R1 in the constellation of Canis Major, which is filled with bright stars and clusters. Also lying close to the Seagull Nebula is the Thor's Helmet Nebula, an object that was imaged using ESO's Very Large Telescope (VLT) on ESO's 50th Anniversary, 5 October 2012, with the help of Brigitte Bailleul -- winner of the Tweet Your Way to the VLT! competition (eso1238a).

Notes

[1] Astronomers use the term HII to mean ionised hydrogen and HI for atomic hydrogen. A hydrogen atom consists of an electron bound to a proton but in an ionised gas atoms are split into freely moving electrons and positive ions, in this case just single protons.

[2] These objects are officially designated Sh 2-292, Sh 2-296, and Sh 2-297 respectively in the SIMBAD astronomical database.


Story Source:

The above story is based on materials provided by European Southern Observatory (ESO). Note: Materials may be edited for content and length.


Cite This Page:

European Southern Observatory (ESO). "The wings of the Seagull Nebula." ScienceDaily. ScienceDaily, 6 February 2013. <www.sciencedaily.com/releases/2013/02/130206094710.htm>.
European Southern Observatory (ESO). (2013, February 6). The wings of the Seagull Nebula. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2013/02/130206094710.htm
European Southern Observatory (ESO). "The wings of the Seagull Nebula." ScienceDaily. www.sciencedaily.com/releases/2013/02/130206094710.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Space & Time News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Rover Finds More Clues About Possible Life On Mars

Rover Finds More Clues About Possible Life On Mars

Newsy (Dec. 17, 2014) NASA's Curiosity rover detected methane on Mars and organic compounds on the surface, but it doesn't quite prove there was life ... yet. Video provided by Newsy
Powered by NewsLook.com
Evidence of Life on Mars? NASA Rover Finds Methane, Organic Chemicals

Evidence of Life on Mars? NASA Rover Finds Methane, Organic Chemicals

Reuters - US Online Video (Dec. 16, 2014) NASA's Mars Curiosity rover finds methane in the Martian atmosphere and organic chemicals in the planet's soil, the latest hint that Mars was once suitable for microbial life. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Geminids Meteor Shower Lights Up Skies in China

Geminids Meteor Shower Lights Up Skies in China

AFP (Dec. 16, 2014) The Geminids meteor shower lights up the skies over the Changbai Mountains in northeast China. Duration: 01:03 Video provided by AFP
Powered by NewsLook.com
Raw: Defense Satellite Launches from California

Raw: Defense Satellite Launches from California

AP (Dec. 13, 2014) A U.S. defense satellite launched from California's central coast on Friday after weather delays caused by a major storm that drenched the state. (Dec. 13) Video provided by AP
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