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| '''WASP-19b''' is an ], notable for possessing one of the shortest orbital periods of any known planetary body: 0.7888399 days or approximately 18.932 hours. | '''WASP-19b''' is an ], notable for possessing one of the shortest orbital periods of any known planetary body: 0.7888399 days or approximately 18.932 hours. | ||
| It has a mass close to that of ] (1.15 ]es), but by comparison has a much larger radius (1.31 times that of Jupiter, or 0.13 ]); making it nearly the size of a low-mass star.<ref name = "Hebb2010" /> It orbits the star WASP-19a in the ]. It is currently the shortest period hot Jupiter discovered as planets with shorter orbital periods have a rocky, metallic or degenerate matter composition. | It has a mass close to that of ] (1.15 ]es), but by comparison has a much larger radius (1.31 times that of Jupiter, or 0.13 ]); making it nearly the size of a low-mass star.<ref name = "Hebb2010" /> It orbits the star WASP-19a in the ]. It is currently the shortest period hot Jupiter discovered as planets with shorter orbital periods have a rocky, metallic or degenerate matter composition. | ||
| In 2013, secondary eclipse and orbital phases were barely observed from the data gathered with ASTEP telescopem, making it the first detection of such kind through ground-based observations. This was possible due to large size of the planet and its small semi-major axis.<ref>http://arxiv.org/abs/1303.0973</ref> | |||
| On 3 December 2013, scientists working with the ] reported detecting ] in the ] of the ].<ref name="NASA-20131203">{{cite web |authors=Staff |title=Hubble Traces Subtle Signals of Water on Hazy Worlds |url=http://www.nasa.gov/content/goddard/hubble-traces-subtle-signals-of-water-on-hazy-worlds/|publisher=] |date=3 December 2013|accessdate=4 December 2013}}</ref><ref name="ApJ-20131203">{{cite journal |last1=Mandell |first1=Avi M. |last2=Haynes |first2=Korey |last3=Sinukoff |first3=Evan |last4=Madhusudhan |first4=Nikku |last5=Burrows |first5=Adam |last6=Deming |first6=Drake |title=Exoplanet Transit Spectroscopy Using WFC3: WASP-12 b, WASP-17 b, and WASP-19 b |url=http://iopscience.iop.org/0004-637X/779/2/128/article |date=3 December 2013 |journal=] |volume=779 |page=128 |doi=10.1088/0004-637X/779/2/128 |accessdate=4 December 2013 }}</ref> | On 3 December 2013, scientists working with the ] reported detecting ] in the ] of the ].<ref name="NASA-20131203">{{cite web |authors=Staff |title=Hubble Traces Subtle Signals of Water on Hazy Worlds |url=http://www.nasa.gov/content/goddard/hubble-traces-subtle-signals-of-water-on-hazy-worlds/|publisher=] |date=3 December 2013|accessdate=4 December 2013}}</ref><ref name="ApJ-20131203">{{cite journal |last1=Mandell |first1=Avi M. |last2=Haynes |first2=Korey |last3=Sinukoff |first3=Evan |last4=Madhusudhan |first4=Nikku |last5=Burrows |first5=Adam |last6=Deming |first6=Drake |title=Exoplanet Transit Spectroscopy Using WFC3: WASP-12 b, WASP-17 b, and WASP-19 b |url=http://iopscience.iop.org/0004-637X/779/2/128/article |date=3 December 2013 |journal=] |volume=779 |page=128 |doi=10.1088/0004-637X/779/2/128 |accessdate=4 December 2013 }}</ref> | ||
Revision as of 22:54, 19 February 2014
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WASP-19b is an extrasolar planet, notable for possessing one of the shortest orbital periods of any known planetary body: 0.7888399 days or approximately 18.932 hours. It has a mass close to that of Jupiter (1.15 Jupiter masses), but by comparison has a much larger radius (1.31 times that of Jupiter, or 0.13 Solar radii); making it nearly the size of a low-mass star. It orbits the star WASP-19a in the Vela constellation. It is currently the shortest period hot Jupiter discovered as planets with shorter orbital periods have a rocky, metallic or degenerate matter composition.
On 3 December 2013, scientists working with the Hubble Space Telescope reported detecting water in the atmosphere of the exoplanet.
References
- Hebb, L.; et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal. 708 (1): 224–231. arXiv:1001.0403. Bibcode:2010ApJ...708..224H. doi:10.1088/0004-637X/708/1/224.
- "Hubble Traces Subtle Signals of Water on Hazy Worlds". NASA. 3 December 2013. Retrieved 4 December 2013.
{{cite web}}: Unknown parameter|authors=ignored (help) - Mandell, Avi M.; Haynes, Korey; Sinukoff, Evan; Madhusudhan, Nikku; Burrows, Adam; Deming, Drake (3 December 2013). "Exoplanet Transit Spectroscopy Using WFC3: WASP-12 b, WASP-17 b, and WASP-19 b". Astrophysical Journal. 779: 128. doi:10.1088/0004-637X/779/2/128. Retrieved 4 December 2013.
External links
Media related to WASP-19b at Wikimedia Commons