Astronomers discover a green white dwarf and the reddest star yet found.
A study of 151 nearby white dwarfs finds about one in 30 glows in other colors.
OriginalSourcePhysLeanUnratedCredibilityUnratedPublished00:10 UTCSourcePhysLeanUnratedCredibilityUnratedPublished00:10 UTC
“Green, pink and purple: Astronomers reveal the surprising true colors of white dwarf stars”
White dwarf stars can appear green, pink, purple, not just white or blue
Key points
- Warwick astronomers modeled white dwarf colors using spectra and human color vision.
- Coolest white dwarfs can reach densities around 1 gram per cubic centimeter.
- Colors depend on atmosphere composition and trace elements like carbon and sodium.
- WD J1330+6435 appears green due to calcium, lithium, and sodium enriching the atmosphere.
- Among 151 white dwarfs within 65 light-years, five showed unusual colors; about 1 in 30.
Other reports
- SourceThe IndependentUnited KingdomLeanCenter-leftCredibilityRatings: AllSides, MBFCRead at The IndependentSourceThe IndependentUnited KingdomLeanCenter-leftCredibilityRatings: AllSides, MBFCRead at The Independent
- SourcePopsciLeanUnratedCredibilityUnratedRead at PopsciSourcePopsciLeanUnratedCredibilityUnratedRead at Popsci
“Astronomers discover first green star and the reddest star ever recorded”
- SourceLive ScienceUnited StatesLeanCenterCredibilityRatings: AllSides, MBFCRead at Live ScienceSourceLive ScienceUnited StatesLeanCenterCredibilityRatings: AllSides, MBFCRead at Live Science
“Astronomers discover the first-ever green star, plus the reddest 'white dwarf' ever seen”
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8 8 Astronomers discover a green white dwarf and the reddest star yet found.
A study of 151 nearby white dwarfs finds about one in 30 glows in other colors.