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STELLAR CHEMISTRY
Hubble Finds Stellar Life And Death in Globular Cluster
by Staff Writers
Baltimore, MD (SPX) Nov 28, 2011


A new NASA Hubble Space Telescope image shows globular cluster NGC 1846, a spherical collection of hundreds of thousands of stars in the outer halo of the Large Magellanic Cloud, a neighboring dwarf galaxy of the Milky Way that can be seen from the southern hemisphere. (Credit: NASA and the Hubble Heritage Team, STScI/AURA; Acknowledgment: P. Goudfrooij, STScI). For a larger version of this image please go here.

A new NASA Hubble Space Telescope image shows globular cluster NGC 1846, a spherical collection of hundreds of thousands of stars in the outer halo of the Large Magellanic Cloud, a neighboring dwarf galaxy of the Milky Way that can be seen from the southern hemisphere.

Aging bright stars in the cluster glow in intense shades of red and blue. The majority of middle-aged stars, several billions of years old, are whitish in color.

A myriad of far distant background galaxies of varying shapes and structure are scattered around the image.

The most intriguing object, however, doesn't seem to belong in the cluster. It is a faint green bubble in the white box near the bottom center of the image.

This so-called "planetary nebula" is the aftermath of the death of a star. The burned-out central star can be seen inside the bubble.

It is uncertain whether the planetary nebula is a member of NGC 1846, or simply lies along the line of sight to the cluster. Measurements of the motion of the cluster stars and the planetary nebula's central star suggest it might be a cluster member.

This Hubble image was taken with the Advanced Camera for Surveys in January of 2006. The cluster was observed in filters that isolate blue, green, and infrared starlight.

As a member of the Large Magellanic Cloud, NGC 1846 is located roughly 160,000 light-years away in the direction of the constellation Doradus.

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Related Links
Hubble at NASA
Stellar Chemistry, The Universe And All Within It






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STELLAR CHEMISTRY
NASA Airborne Observatory Views Star Forming Region W40
Moffett Field CA (SPX) Nov 25, 2011
A new image from NASA's Stratospheric Observatory for Infrared Astronomy, or SOFIA, provides the highest resolution mid-infrared image taken to-date of the massive star formation region in our galaxy known as W40. The W40 image was taken by the Faint Object infraRed Camera for the SOFIA Telescope (FORCAST) instrument mounted in the airborne observatory - a highly modified 747SP airliner ca ... read more


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