Gliese 581 d: Difference between revisions
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'''Gliese 581 d''' is an [[extrasolar planet]] orbiting the [[red dwarf]] [[star]] [[Gliese 581]]. Due to its mass it can be categorized as a [[Super-earth]]. | '''Gliese 581 d''' is an [[extrasolar planet]] orbiting the [[red dwarf]] [[star]] [[Gliese 581]]. Due to its mass it can be categorized as a [[Super-earth]]. | ||
Gliese 581 d is near the outer edge of the Habitable zone. <ref>{{cite web |url=http://arxiv.org/PS_cache/arxiv/pdf/0705/0705.3758v1.pdf |title=The Habitability of Super-Earths in Gliese 581 |accessdate=2007-05-29 }}</ref> | |||
== Discovery == | == Discovery == | ||
Revision as of 16:04, 6 June 2007
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Gliese 581 d is an extrasolar planet orbiting the red dwarf star Gliese 581. Due to its mass it can be categorized as a Super-earth.
Gliese 581 d is near the outer edge of the Habitable zone. [1]
Discovery
The planet was discovered by the team of Stéphane Udry of the Geneva Observatory in Switzerland using the HARPS instrument on the European Southern Observatory 3.6 meter telescope in La Silla, Chile. Udry's team employed the radial velocity technique, in which the size and mass of a planet are determined based on the small perturbations it induces in its parent star’s orbit via gravity.
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The team is "confident" that the planet exists but recognizes that "unlikely" events could mimic its existence. They believe the issue will be settled by upcoming studies.
References
External links
es:Gliese 581 d fr:Gliese 581 d it:Gliese 581 d nl:Gliese 581 d pl:Gliese 581 d fi:Gliese 581 d sv:Gliese 581 d
- ↑ "The Habitability of Super-Earths in Gliese 581". http://arxiv.org/PS_cache/arxiv/pdf/0705/0705.3758v1.pdf. Retrieved on 2007-05-29.