star formation tagged posts

Puzzling ‘Cold Quasar’ forming New Stars in spite of active galactic nucleus

Using NASA’s SOFIA telescope, researchers have found CQ 4479, a galaxy which never had been closely studied before, to be generating new stars in spite of a luminous AGN at the galaxy’s center. Researchers from the University of Kansas have described a galaxy more than 5.25 billion light years away undergoing a rarely seen stage in its galactic lifecycle. Their findings recently were published in the Astrophysical Journal.

The galaxy, dubbed CQ 4479, shows characteristics that normally don’t coexist: an X-ray luminous active galactic nuclei (AGN) and a cold gas supply fueling high star formation rates.

“Massive galaxies, such as our own Milky Way, host a supermassive black hole at their hearts — these are black holes that grow by accreting interstellar gas onto themselves to bec...

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Star Formation Project Maps nearby Interstellar Clouds

Montage of the CO molecule radio emission-line intensities in the three regions observed by the Star Formation Project and the Nobeyama 45 m Radio Telescope.
Montage of the CO molecule radio emission-line intensities in the three regions observed by the Star Formation Project and the Nobeyama 45-m Radio Telescope. (Credit: NAOJ)

Astronomers have captured new, detailed maps of three nearby interstellar gas clouds containing regions of ongoing high-mass star formation. The results of this survey, called the Star Formation Project, will help improve our understanding of the star formation process.

We know that stars such as the Sun are born from interstellar gas clouds. These interstellar gas clouds are difficult to observe in visible light, but emit strong radio wavelength, which can be observed by the Nobeyama 45-m Radio Telescope in Japan...

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Meteorite contains the Oldest Material on Earth: 7-billion-year-old stardust

This is a fragment of the Murchison meteorite. The total mass of the meteorite’s fragments collected is around 100 kg, or 220 pounds.Field Museum

The ancient stardust reveals a ‘baby boom’ in star formation. Scientists have discovered the oldest solid material on Earth: 7-billion-year-old stardust trapped inside a meteorite. This stardust provides evidence for a ‘baby boom’ of new stars that formed 7 billion years ago, contrary to thinking that star formation happens at a steady, constant rate.

Stars have life cycles. They’re born when bits of dust and gas floating through space find each other and collapse in on each other and heat up. They burn for millions to billions of years, and then they die...

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Galaxy Blazes with New Stars born from close encounter

New image of irregular galaxy NGC 4485 captured by Hubble’s Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS).
Credit: NASA and ESA; Acknowledgment: T. Roberts (Durham University, UK), D. Calzetti (University of Massachusetts) and the LEGUS Team, R. Tully (University of Hawaii), and R. Chandar (University of Toledo)

The irregular galaxy NGC 4485 shows all the signs of having been involved in a hit-and-run accident with a bypassing galaxy. Rather than destroying the galaxy, the chance encounter is spawning a new generation of stars, and presumably planets.

The right side of the galaxy is ablaze with star formation, shown in the plethora of young blue stars and star-incubating pinkish nebulas. The left side, however, looks intact...

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