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File:Stars similar to Eta Carinae in nearby galaxies.jpg

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English: Researchers found likely Eta twins in four galaxies by comparing the infrared and optical brightness of each candidate source. Infrared images from NASA's Spitzer Space Telescope revealed the presence of warm dust surrounding the stars. Comparing this information with the brightness of each source at optical and near-infrared wavelengths as measured by instruments on the NASA/ESA Hubble Space Telescope, the team was able to identify candidate Eta Carinae-like objects. Top: 3.6-micron images of candidate Eta twins from Spitzer's IRAC instrument. Bottom: 800-nanometer images of the same sources from various Hubble instruments. Link: NASA Press release
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来源 http://www.spacetelescope.org/images/opo1601a/
作者 NASA, ESA, and R. Khan (GSFC and ORAU)

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