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viernes, 4 de marzo de 2016

NASA : Hubble and a Stellar Fingerprint .- Hubble y de una huella digital Stellar

http://www.nasa.gov/image-feature/goddard/2016/hubble-and-a-stellar-fingerprint

An emission-line star known as IRAS 12196-6300.
Showcased at the center of this NASA/ESA Hubble Space Telescope image is an emission-line star known as IRAS 12196-6300.

Located just under 2,300 light-years from Earth, this star displays prominent emission lines, meaning that the star’s light, dispersed into a spectrum, shows up as a rainbow of colors marked with a characteristic pattern of dark and bright lines. The characteristics of these lines, when compared to the “fingerprints” left by particular atoms and molecules, can be used to reveal IRAS 12196-6300’s chemical composition.

Under 10 million years old and not yet burning hydrogen at its core, unlike the sun, this star is still in its infancy. Further evidence of IRAS 12196-6300’s youth is provided by the presence of reflection nebulae. These hazy clouds, pictured floating above and below IRAS 12196-6300, are created when light from a star reflects off a high concentration of nearby dust, such as the dusty material still remaining from IRAS 12196-6300’s formation.

Text credit: European Space Agency
Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt

Last Updated: March 4, 2016
Editor: Ashley Morrow
NASA
Guillermo Gonzalo Sánchez Achutegui
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