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- GD_66 abstract "GD 66 or V361 Aurigae is a 0.64 solar mass pulsating white dwarf star located 170 light years from Earth in the Auriga constellation. The estimated cooling age of the white dwarf is 500 million years. Models of the relationship between the initial mass of a star and its final mass as a white dwarf star suggest that when the star was on the main sequence it had a mass approximately 2.5 times that of the Sun, which implies its lifetime was around 830 million years. The total age of the star is thus estimated to be in the range 1.2 to 1.7 billion years.The star is a pulsating white dwarf of type DAV, with an extremely stable period. Small variations in the phase of pulsation led to the suggestion that the star was being orbited by a giant planet which caused the pulsations to be delayed due to the varying distance to the star caused by the reflex motion about the system's centre-of-mass. Observations with the Spitzer Space Telescope failed to directly detect the planet, which put an upper limit on the mass of 5–6 Jupiter masses. Investigation of a separate pulsation mode revealed timing variations in antiphase with the variations in the originally-analysed pulsation mode. This would not be the case if the variations were caused by an orbiting planet, and thus the timing variations must have a different cause. This illustrates the potential dangers of attempting to detect planets by white dwarf pulsation timing.".
- GD_66 wikiPageExternalLink AladinPreview?-c=05+20+38.31%2B30+48+24.1&ident=EGGR+572&submit=Aladin+previewer.
- GD_66 wikiPageExternalLink VizieR-S?V*%20V361%20Aur.
- GD_66 wikiPageExternalLink VizieR-S?WD%200517%2b307.
- GD_66 wikiPageID "14798147".
- GD_66 wikiPageRevisionID "602005727".
- GD_66 absmagV "12".
- GD_66 age "1.2".
- GD_66 appmagV "15.56".
- GD_66 bV "0.22".
- GD_66 class "DA".
- GD_66 constell Auriga_(constellation).
- GD_66 distLy "170".
- GD_66 distPc "51".
- GD_66 epoch "J2000".
- GD_66 gravity "8.05".
- GD_66 hasPhotoCollection GD_66.
- GD_66 mass "0.64".
- GD_66 propMoDec "−120".
- GD_66 propMoRa "54".
- GD_66 simbad "GD+66".
- GD_66 temperature "11980".
- GD_66 uB "-0.59".
- GD_66 variable Pulsating_white_dwarf.
- GD_66 subject Category:Auriga_(constellation).
- GD_66 subject Category:Hypothetical_planetary_systems.
- GD_66 subject Category:Objects_named_with_variable_star_designations.
- GD_66 subject Category:Pulsating_white_dwarfs.
- GD_66 type CelestialBody.
- GD_66 type Star.
- GD_66 type PhysicalBody.
- GD_66 comment "GD 66 or V361 Aurigae is a 0.64 solar mass pulsating white dwarf star located 170 light years from Earth in the Auriga constellation. The estimated cooling age of the white dwarf is 500 million years. Models of the relationship between the initial mass of a star and its final mass as a white dwarf star suggest that when the star was on the main sequence it had a mass approximately 2.5 times that of the Sun, which implies its lifetime was around 830 million years.".
- GD_66 label "GD 66".
- GD_66 label "GD 66".
- GD_66 label "GD 66".
- GD_66 label "GD 66".
- GD_66 sameAs GD_66.
- GD_66 sameAs GD_66.
- GD_66 sameAs m.03gyb4_.
- GD_66 sameAs Q2427149.
- GD_66 sameAs Q2427149.
- GD_66 wasDerivedFrom GD_66?oldid=602005727.
- GD_66 isPrimaryTopicOf GD_66.
- GD_66 name "GD 66".