Daily non-political popular news in brief.

Astronomers Gain Important Insight On How Massive Stars Form

09-29-2006 · ScienceDaily

Astronomers using the National Science Foundation's Very Large Array (VLA) radio telescope have discovered key evidence that may help them figure out how very massive stars can form.

Keywords: astronomers, gain, important, insight, massive, stars, form, astronomer, star

« Previous | Next »

Similar news on "Astronomers Gain Important Insight On How Massive Stars Form":

Neutron stars can be more massive, while black holes are more rare, Arecibo Observatory finds
01-14-2008 · EurekAlert!
Neutron stars can be considerably more massive than previously believed, and it is more difficult to form black holes, according to new research developed by using the Arecibo Observatory in Arecibo, Puerto Rico. Paulo Freire, an astronomer from the observatory, will present his research at the American Astronomical Society national meeting in Austin on Jan. 11.
Similar news · Read more »
Watching How Planets Form: Anatomy Of A Planet-forming Disc Around A Star More Massive Than The Sun
09-30-2006 · ScienceDaily
With the VISIR instrument on ESO's Very Large Telescope, astronomers have mapped the disc around a star more massive than the sun. The very extended and flared disc most likely contains enough gas and dust to spawn planets. It provides the rare opportunity to witness the conditions prevailing prior to or during planet formation.
Similar news · Read more »
Heaviest stellar black hole discovered in nearby galaxy
10-17-2007 · EurekAlert!
Astronomers have located an exceptionally massive black hole in orbit around a huge companion star. By combining data from NASA's Chandra X-ray Observatory and the Gemini telescope on Mauna Kea, Hawaii, M33 X-7 was determined to be the most massive stellar black hole known. This result has intriguing implications for the evolution and ultimate fate of massive stars.
Similar news · Read more »
Rethinking last century's closest, brightest supernova
01-09-2007 · EurekAlert!
February 2007 marks the 20th anniversary of the nearest and brightest supernova humans have seen in 400 years. Called SN1987A, it burned for weeks in the Large Magellanic Cloud, and provided astronomers with new information that forced them to rethink theories of how massive stars explode. Now UC Berkeley astronomer Nathan Smith says that theory needs rethinking again. Exploding stars like SN1987A may have been luminous blue variables, not blue supergiants.
Similar news · Read more »
Hubble finds multiple stellar 'baby booms' in a globular cluster
05-02-2007 · EurekAlert!
Analysis of Hubble observations of the massive globular cluster NGC 2808 provides evidence that it has three generations of stars that formed early in the cluster's life. This is a major upset for conventional theories as astronomers have long thought that globular star clusters had a single "baby boom" of stars early in their lives and then settled down into a long, quiet middle age.
Similar news · Read more »
Supernova impostor goes supernova
04-04-2007 · EurekAlert!
In a galaxy far, far away, a massive star suffered a nasty double whammy. On Oct. 20, 2004, Japanese amateur astronomer Koichi Itagaki saw the star let loose an outburst so bright that it was initially mistaken for a supernova. The star survived, but for only two years. On Oct. 11, 2006, professional and amateur astronomers witnessed the star actually blowing itself to smithereens as Supernova 2006jc.
Similar news · Read more »
New X-ray source in nearby galaxy spawns mystery
01-09-2008 · EurekAlert!
Astronomers studying a nearby galaxy have spied a rare type of star system -- one that contains a black hole that suddenly began glowing brightly with X-rays. Though this type of star system is supposed to be rare, it's the second such system discovered in that galaxy, called Centaurus A. The discovery suggests that astronomers have more to learn about the lives and deaths of massive stars in galaxies such as our own.
Similar news · Read more »
Double explosion heralds the death of a very massive star
06-13-2007 · EurekAlert!
A unique discovery of two celestial explosions at exactly the same position in the sky has led astronomers to suggest they have witnessed the death of one of the most massive stars that can exist. A global collaboration of astronomers, led by Queen's University Belfast teamed up with Japanese supernova hunter Koichi Itagaki to report an amazing new discovery in Nature this week.
Similar news · Read more »
A jet of molecular hydrogen arising from a forming high-mass star
03-07-2007 · EurekAlert!
A team of European astronomers offer new evidence that high-mass stars could form in a similar way to low-mass stars, that is, from accretion of gas and dust through a disk surrounding the forming star. Their article, published in Astronomy & Astrophysics, reports the discovery of a jet of molecular hydrogen arising from a forming high-mass star located in the Omega nebula (M17).
Similar news · Read more »
A brown dwarf joins the jet-set
05-23-2007 · EurekAlert!
Jets of matter have been discovered around a very low mass "failed star," mimicking a process seen in young stars. This suggests that these "brown dwarfs" form in a similar manner to normal stars but also thatoutflows are driven out by objects as massive as hundreds of millions of solar masses down to Jupiter-sized objects.
Similar news · Read more »