Astronomers Discover Possible Planet Born From a Dead Star’s Ashes
Unusual niobium signatures and TESS brightness changes suggest the white dwarf is accreting from a Jupiter-size planet formed from stellar debris.
- On Monday, Warwick researchers reported evidence of a 'phoenix planet' orbiting white dwarf HS 0209+0832, a potential second-generation world formed from debris left behind after the star's death.
- Unlike first-generation planets like Earth that emerge during a star's birth, second-generation planets form from material cast off during a star's final stages, as this candidate did.
- TESS data indicates a gas giant orbiting the system every 4.4 days, and astronomers identified unusual niobium levels in the star's atmosphere suggesting accretion from nearby debris.
- This finding suggests our own solar system might host similar worlds after the Sun burns out in roughly five billion years, though the new world is too hot for life.
- Researchers plan to use the James Webb Space Telescope to observe the system over the next year, which could confirm the planet and establish an entirely new planetary class around white dwarfs.
127 Articles
127 Articles
NASA Hubble Cold Case: A Dead Star May Have Given Birth to a New Planet
Astronomers revisiting old observations from NASA’s Hubble Space Telescope have uncovered a clue that may solve a decades-old cold case. A study published October 5 in Nature Astronomy reports evidence that the white dwarf HS 0209+0832 could be orbited by a second-generation planet. A white dwarf is the leftover core of a low-mass star that [...]
Unlike the planets of the Solar System, which formed with the Sun, the new planet was born after the death of its star. The post “Second-generation” planet was made from the ashes of its dead star appeared first on in.gr.
Researchers found a unique celestial body around a white dwarf; the object emerged from the material expelled after the final collapse of its progenitor star
'More Might Be Out There': A Scorching Phoenix Planet May Solve a 3-Decade-Old Astronomical Cold Case
After being born of mostly just hydrogen and helium, a scant 14-ish billion years later the Universe is full of weird planets of wildly varying makes, shapes, and sizes. Well, maybe not shapes, because they're all pretty rotund – it's in the definition of planet. Yet some are truly alien, including oddballs as dense as iron and teeny-tiny 'next door neighbors' that make our modest Venus seem like a giant. Upping the alien ante, astronomers ha…
Protothema
gazzetta.grAstronomers have identified evidence of a rare 'second generation planet', which appears to have formed from the materials ejected by its star itself before turning into a white dwarf
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