Image of the day 01/31/2018

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The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation

Technical card

Resolution: 1778x1778

Astrometry.net job: 1903686

RA center: 303.840 degrees

DEC center: 38.045 degrees

Pixel scale: 0.253 arcsec/pixel

Orientation: 300.113 degrees

Field radius: 0.089 degrees

Description

This is an enlarged version of our Soap Bubble image. I have noted the Central Star/Post-AGB Star on the image. Initially we thought this was a white dwarf. But we were corrected by George Jacoby, Astronomer and Deputy Director for Technology at the Lowell Observatory. Here is what he said.

"Just to be clear, the central stars of planetary nebulae are not yet white dwarfs. They will soon be white dwarfs in a few 100,000 years. The difference is that PN stars still have nuclear fusion occurring as a power source while white dwarfs do not."

Thanks George.

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Eric Coles (coles44)
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The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation, 




    

        Eric Coles (coles44)

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