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- GD_362 abstract "GD 362 is a white dwarf approximately 150 light years from Earth. In 2004, spectroscopic observations showed that it had a relatively high concentration of metals in its atmosphere. Since the high gravitational field of white dwarfs quickly forces heavy elements to settle towards the bottom of the atmosphere, this meant that the atmosphere was being polluted by an external source. In 2005, infrared photometric observations suggested that it was surrounded by a ring of dust with size comparable to the rings of Saturn, providing an explanation for this pollution.In 2006, Benjamin Zuckerman, Michael Jura and other astronomers used the Keck telescope to obtain high-resolution spectra of GD 362 which showed that heavy elements in the star's atmosphere occurred in concentrations similar to those in the Earth-Moon system. The group concluded that a possible origin for GD 362's dust ring and atmospheric pollutants was that a rocky asteroid about 200 km in diameter was disintegrated by tidal effects between 100,000 and 1 million years ago. If this was the origin, the spectra indicate that the asteroid should have had composition similar to the Earth's crust, suggesting that the star might have had an Earth-like planet before it entered its red giant phase.GD 362 has been a white dwarf for approximately 900 million years.".
- GD_362 wikiPageExternalLink sim-id?Ident=GD%20362.
- GD_362 wikiPageExternalLink 090519Doomedplanetmayhavebeendrenchedinwater.html.
- GD_362 wikiPageExternalLink dead-star-found-polluted-by-earthlike-planet.
- GD_362 wikiPageID "12819269".
- GD_362 wikiPageRevisionID "587304585".
- GD_362 appmagV "16.23".
- GD_362 constell Hercules_(constellation).
- GD_362 distLy "~150".
- GD_362 distPc "~50".
- GD_362 epoch "J2000.0".
- GD_362 gravity "8.24".
- GD_362 hasPhotoCollection GD_362.
- GD_362 mass "0.73".
- GD_362 propMoDec "-223".
- GD_362 propMoRa "27".
- GD_362 temperature "10540".
- GD_362 subject Category:Circumstellar_disks.
- GD_362 subject Category:Exoplanet_candidates.
- GD_362 subject Category:Hercules_(constellation).
- GD_362 subject Category:White_dwarfs.
- GD_362 type CelestialBody.
- GD_362 type Star.
- GD_362 type PhysicalBody.
- GD_362 comment "GD 362 is a white dwarf approximately 150 light years from Earth. In 2004, spectroscopic observations showed that it had a relatively high concentration of metals in its atmosphere. Since the high gravitational field of white dwarfs quickly forces heavy elements to settle towards the bottom of the atmosphere, this meant that the atmosphere was being polluted by an external source.".
- GD_362 label "GD 362".
- GD_362 label "GD 362".
- GD_362 label "GD 362".
- GD_362 sameAs GD_362.
- GD_362 sameAs m.02x66l_.
- GD_362 sameAs Q5175114.
- GD_362 sameAs Q5175114.
- GD_362 wasDerivedFrom GD_362?oldid=587304585.
- GD_362 isPrimaryTopicOf GD_362.
- GD_362 name "GD 362".