Image: Newborn stars blow bubbles in the Cat's Paw Nebula

Image: Newborn stars blow bubbles in the Cat's Paw Nebula
Credit: NASA

This image from NASA's Spitzer Space Telescope shows the Cat's Paw Nebula, so named for the large, round features that create the impression of a feline footprint. The nebula is a star-forming region in the Milky Way galaxy, located in the constellation Scorpius. Estimates of its distance from Earth range from about 4,200 to about 5,500 light-years.

Framed by green clouds, the bright red bubbles are the dominant feature in the image, which was created using data from two of Spitzer's instruments. After gas and dust inside the nebula collapse to form stars, the stars may in turn heat up the pressurized gas surrounding them, causing it to expand into space and create bubbles.

The green areas show places where radiation from hot stars collided with large molecules called "," causing them to fluoresce.

In some cases, the bubbles may eventually "burst," creating the U-shaped features that are particularly visible in the image below, which was created using data from just one of Spitzer's instruments.

Spitzer is an infrared telescope, and is useful to astronomers because it can penetrate thick clouds of gas and dust better than optical light (the kind visible to the human eye). The black filaments running horizontally through the are regions of gas and dust so dense, not even infrared light can pass through them. These dense regions may soon be sites where another generation of stars will form.

Image: Newborn stars blow bubbles in the Cat's Paw Nebula
The Cat's Paw Nebula, imaged here by NASA's Spitzer Space Telescope using the IRAC instrument, is a star-forming region inside the Milky Way Galaxy. The dark filament running through the middle of the nebula is a particularly dense region of gas and dust. Credit: NASA/JPL-Caltech

The Cat's Paw star-forming region is estimated to be between 24 and 27 parsecs (80 and 90 light years) across. It extends beyond the left side of these images and intersects with a similar-sized star-forming region, NGC 6357. That region is also known as the Lobster Nebula – an unlikely companion for a cat.

The top image was compiled using data from the Infrared Array Camera (IRAC) and the Multiband Imaging Photometer (MIPS) aboard Spitzer. MIPS collects an additional "color" of light in the infrared range, which reveals the red-colored features, created by dust that has been warmed by the hot gas and the from nearby stars. The second image is based on data from IRAC alone, so this dust is not visible.

The images were pulled from data collected for the Galactic Legacy Mid-Plane Survey Extraordinaire project (GLIMPSE). Using data from Spitzer, GLIMPSE created the most accurate map ever of the large central bar of the galaxy and showed that the galaxy is riddled with gas bubbles like those seen here.


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Space Image: North American Nebula

More information: More information about Spitzer is available at the following sites: www.spitzer.caltech.edu/
Provided by NASA
Citation: Image: Newborn stars blow bubbles in the Cat's Paw Nebula (2018, October 24) retrieved 22 September 2019 from https://phys.org/news/2018-10-image-newborn-stars-cat-paw.html
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Oct 24, 2018
The green areas show places where radiation from hot stars collided with large molecules called "polycyclic aromatic hydrocarbons," causing them to fluoresce.

Otherwise known as glow mode plasma.

Oct 24, 2018
Whatever it is called, it shows the majestic forms that gasses and dust take on in the Cosmos.

Oct 25, 2018
Just need to point out that this:
The nebula is a star-forming region in the Milky Way galaxy

is sheer speculation totally devoid of facts. It's non-science!

Well - just look at this contradiction which show just how maddening the above statement is:
After gas and dust inside the nebula collapse to form stars, the stars may in turn heat up the pressurized gas surrounding them, causing it to expand into space and create bubbles


Why would the gas collapse to form a star if any heat from internal pressure would cause it to expand? The researchers do not show how the equilibrium condition of self-gravity versus heat pressure (The Jeans Mass limit) would be overcome. Right now there just isn't any confirmed, real, scientific solution to that problem - notwithstanding all the posturing via dark matter.

Oct 25, 2018
The green areas show places where radiation from hot stars collided with large molecules called "polycyclic aromatic hydrocarbons," causing them to fluoresce.

Otherwise known as glow mode plasma.


Hahahahaha. What an idiot!

Oct 25, 2018
is sheer speculation totally devoid of facts. It's non-science!


What would you know about science, god-boy? Stick to myth and superstition, yes? Don't need much of an IQ for that, so you should be right at home.

Oct 25, 2018
is sheer speculation totally devoid of facts. It's non-science!


What would you know about science, god-boy? Stick to myth and superstition, yes? Don't need much of an IQ for that, so you should be right at home.
says jonesybonesy

You must mean the ghostly Myth of Dark Matter/Dark Energy - which are STILL unproven, try as they might, and even LIE as they might - and it will soon be relegated to the junkyard of superstitions by scientists using reason and common sense - which you are seriously lacking.

The Truth will set you free, jonesybonesy, and maybe some day you will see the Light.
:))

Oct 25, 2018
Star formation is one of the least comprehended phenomenon in astrophysics. Is there a general theory of star formation? No, there is not. There is a number of models based on computer simulations which include supersonic hydrodynamics with non-ideal MHD turbulence influenced by gravity. They include the line and continuum radiative processes of the energy transfer; a number of chemical processes with dissociation, recombination and ionization, with uncertain nomenclature of atoms and molecules, unknown magnetic fields and formation and destruction of dust particles. In addition there is macrophysics that is an environment in the molecular clouds, clumps and cores; inclusion in the multiple systems, collisions among stellar systems; jets and outflows; radiation pressure.
https://www.acade...ormation
https://www.acade...and_Jets

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