Quantcast

Latest Star formation Stories

44b4b7af5ab545177922fd4677ade57a1
2009-08-12 14:15:00

This composite image, combining data from the Chandra X-ray Observatory and the Spitzer Space Telescope shows the molecular cloud Cepheus B, located in our Galaxy about 2,400 light years from the Earth. A molecular cloud is a region containing cool interstellar gas and dust left over from the formation of the galaxy and mostly contains molecular hydrogen. The Spitzer data, in red, green and blue shows the molecular cloud (in the bottom part of the image) plus young stars in and around Cepheus...

2009-06-09 15:51:04

The astrophysicist João Alves, director of the Calar Alto Observatory in Almeria, and his colleague Andreas Brkert, from the German observatory in the University of Munich, believe that "the inevitable future of the starless cloud Barnard 68" is to collapse and give rise to a new star, according to an article which has been published recently in The Astrophysical Journal.Barnard 68 (B68) is a dark nebula located in the constellation of Ofiuco, around 400 light years away....

7d34eca286fa533832ee3d8fef3fc0ed1
2009-04-20 09:40:00

Astronomers have completed the most comprehensive census of the star formation surrounding the Orion Nebula. Using the United Kingdom Infrared Telescope (UKIRT) in Hawaii, the IRAM Millimeter-wave Telescope in Spain, and the orbiting Spitzer Space Telescope, astronomers have uncovered a much busier scene than previously considered in and around Orion, some 1300 light years away from Earth. They found that a stellar nursery exists behind the constellation, and can be vaguely seen through the...

7474bc0055dddda5036d0565bfaa77621
2009-02-24 09:39:37

On long, dark winter nights, the constellation of Orion the Hunter dominates the sky. Within the Hunter's sword, the Orion Nebula swaddles a cluster of newborn stars called the Trapezium. These stars are young but powerful, each one shining with the brilliance of 100,000 Suns. They are also massive, containing 15 to 30 times as much material as the Sun. Where did the Trapezium stars come from? The question is not as simple as it seems. When it comes to the theory of how massive stars form,...

0625b6aa14726ff9d4350f7043449ba61
2009-02-05 10:00:00

Researchers from the Max Planck Institute for Astronomy detect that stars were forming at record speeds in the small core region of an infant galaxy When galaxies are born, do their stars form everywhere at once, or only within a small core region? Recent measurements of an international team led by scientists from the Max Planck Institute for Astronomy provide the first concrete evidence that star-forming regions in infant galaxies are indeed small - but also hyperactive, producing stars at...

a46dee078cf669b2c572ca7eb68aaf901
2009-01-16 09:31:42

SANTA CRUZ, CA -- Theorists have long wondered how massive stars--up to 120 times the mass of the Sun--can form without blowing away the clouds of gas and dust that feed their growth. But the problem turns out to be less mysterious than it once seemed. A study published this week by Science shows how the growth of a massive star can proceed despite outward-flowing radiation pressure that exceeds the gravitational force pulling material inward. The new findings also explain why massive stars...

e28e88d5cecf65725797990aee90d9e51
2008-12-31 15:10:00

New computer visualization technology developed by the Harvard Initiative in Innovative Computing has helped astrophysicists understand that gravity plays a larger role than previously thought in deep space's vast, star-forming molecular clouds. The insight, to be reported in the Jan. 1 issue of the journal Nature, is being illustrated in the journal's online version through new three-dimensional Portable Document Format (PDF) technology that will allow readers to view the article's key...

aeb5e77a4dcffd9f2d2c3c522ecd5ac51
2008-11-19 09:53:06

The Akari infrared surveyor, a Japanese Aerospace Exploration Agency mission with ESA participation, has returned a host of new results. From splashes in cosmic rivers of dust and gas to supernova remnants, the mission has been uncovering secrets of the cold and dusty Universe. Splashes in the interstellar medium The interstellar medium, a tenuous mix of gas and tiny solid dust particles, permeates space. As stars age, they spew out gas and dust in a flow called stellar wind, which eventually...

7ae75af99ea503c03741f12cc593bcd6
2008-10-08 06:45:00

Different wavelengths of light swirl together like watercolors in a new, ethereal portrait of a bright, active star-forming region. The multi-wavelength picture combines X-ray, infrared and visible light captured by ESA's XMM-Newton space-borne X-ray observatory, NASA's Spitzer Space Telescope and the European Southern Observatory's New Technology Telescope. The colorful image offers a fresh look into the history of the star-studded region, called NGC 346, revealing new information on...

17f559ac3f42e555bd841b183dfc4dda1
2008-08-22 12:45:00

Cambridge, MA - A new image from NASA's Spitzer Space Telescope tells a tale of life and death, and reveals a rich family history. The striking infrared picture shows a colorful cosmic cloud, called W5, studded with multiple generations of blazing stars. It also provides dramatic new evidence that massive stars - through their brute winds and radiation - can trigger the birth of stellar newborns. "Triggered star formation continues to be very hard to prove," said Xavier Koenig of the...


Latest Star formation Reference Libraries

6_a1ae8ebf66110513af3385295f837b592
2004-10-19 04:45:42

T Tauri -- T Tauri stars are a class of stars thought to represent extremely young pre-main sequence stars, in an early stage of life. They are seen near many molecular clouds in our galaxy. The first ones were found in 1945, identified by their optical variability and strong chromospheric lines. T Tauri stars have masses and temperatures similar to the Sun, but are significantly brighter. They have fast rotation rates, typically with a period of a few days, compared to a month for...

6_eb1c58e78fe764237148429a189b17e92
2004-10-19 04:45:42

Star Formation -- Star formation is the process by which gas in molecular clouds gets transformed into stars. In the current paradigm of star formation, cores of molecular clouds (regions of specially high density) became gravitationally unstable, and start to concentrate. Part of the gravitational energy lost in the process is radiated in the infrared, another part increases the temperature of the core. The accretion of material happen partially though a circumstellar disc. When...

6_53083d96ff77dbf99c47ef10b6a209332
2004-10-19 04:45:41

Molecular Cloud -- Molecular clouds are interstellar nebulae that have a density and size sufficient to permit the formation of H2, molecular hydrogen. However, this molecule is difficult to detect, and the molecule most used to trace the H2 is CO (carbon monoxide). The ratio between CO luminosity and H2 mass is roughly constant, although there are reasons to doubt this assumption in observations of some other galaxies. In the Milky Way, molecular clouds account for roughly one-half...

6_1e0e5cf9a2c3ce795f6505f978f2a7d42
2004-10-19 04:45:41

H II Region -- An H II region is an emission nebula associated with hot, young, blue stars, and star forming regions. H II, or singly-ionized hydrogen, is nebular gas ionized by ultraviolet light emitted by these hot, young stars of spectral type O and B. The sizes of H II regions are determined both by the amount of gas present, and by the luminosity of the O and B stars -- the more luminous the stars are, the larger the H II region can be. H II regions are found within the spiral...

3_2ba8343f20ea4b49d1ac4cbb2680b3fa2
2004-10-19 04:45:40

Horsehead Nebula -- The Horsehead Nebula, a part of the optical nebula IC434 and also known as Barnard 33, was first recorded in 1888 on a photographic plate taken at the Harvard College Observatory. Its coincidental appearance as the profile of a horse's head and neck has led to its becoming one of the most familiar astronomical objects. It is, in fact, an extremely dense cloud projecting in front of the ionized gas that provides the pink glow so nicely revealed in this picture. We...

More Articles (5 articles) »
Word of the Day
mallemaroking
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.