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{{Short description|Giant exoplanet in the constellation Columba}}
{{Short description|Giant exoplanet in the constellation Columba}}
{{DISPLAYTITLE:NGTS-3Ab}}
{{DISPLAYTITLE:NGTS-3Ab}}
{{Infobox planet|period={{val|1.67|0.00|ul=days}}|mean_radius={{val|1.48|0.37|ul=Jupiter radius}}<ref name="Günther 2018"/>|extrasolarplanet=yes|name=NGTS-3Ab|mass={{val|2.38|0.26|ul=Jupiter mass}}<ref name="Günther 2018"/>|semimajor={{val|0.023|0.007|0.005|ul=AU}}|inclination={{val|89.56|0.31|0.48|ul=deg}}|image=[[File:NGTS-3Ab (comparision).png|frameless|NGTS-3Ab (white) compared to Jupiter.]]|caption=NGTS-3Ab compared to Jupiter|discovered=07 May 2018|discoverer=Günther et al.|discovery_ref=<ref name="Günther 2018"/>|orbit_ref=<ref name="Günther 2018"/>|discovery_method=[[Transit (astronomy)|Transit]]|time_periastron={{val|2457620.16790|0.00095|ul=days|fmt=commas}}|semi-amplitude={{val|-404|35|ul=km/s}}|density={{val|0.31|0.41|0.15|ul=g/cm3}}<ref name="Günther 2018"/>}}
{{Infobox planet|period={{val|1.67|0.00|ul=days}}|mean_radius={{val|1.48|0.37|ul=Jupiter radius}}<ref name="Günther 2018"/>|extrasolarplanet=yes|name=NGTS-3Ab|mass={{val|2.38|0.26|ul=Jupiter mass}}<ref name="Günther 2018"/>|semimajor={{val|0.023|0.007|0.005|ul=AU}}|inclination={{val|89.56|0.31|0.48|ul=deg}}|image=[[File:NGTS-3Ab (comparision).png|frameless|NGTS-3Ab (white) compared to Jupiter.]]|caption=NGTS-3Ab compared to Jupiter|discovered=07 May 2018|discoverer=Günther et al.|discovery_ref=<ref name="Günther 2018"/>|orbit_ref=<ref name="Günther 2018"/>|discovery_method=[[Transit (astronomy)|Transit]]|time_periastron={{val|2457620.16790|0.00095|ul=days|fmt=commas}}|semi-amplitude={{val|-404|35|ul=km/s}}|density={{val|0.31|0.41|0.15|ul=g/cm3}}<ref name="Günther 2018"/>|star=[[NGTS-3]]}}


'''NGTS-3Ab''' is a gas giant exoplanet that orbits a [[G-type star]]. Its mass is 2.38 Jupiters, it takes 1.7 days to complete one orbit of its star, and is 0.023 AU from its star. Its discovery was announced in 2018.<ref>{{Cite web|url=https://exoplanets.nasa.gov/newworldsatlas/6305/ngts-3-a-b/|title=NGTS-3 A b {{!}} New World Atlas - Exoplanet Exploration: Planets Beyond our Solar System|website=Exoplanet Exploration: Planets Beyond our Solar System|access-date=2018-07-03}}{{dead link|date=June 2021|bot=medic}}{{cbignore|bot=medic}}</ref> The Jupiter-like planet is discovered by 39 astronomers, mainly [[Max Günther]], [[Didier Queloz]], Edward Gillen, Laetitia Delrez, and [[François Bouchet|Francois Bouchy]].<ref name="Günther 2018">{{Cite journal|last=Günther|first=Maximilian N.|last2=Queloz|first2=Didier|last3=Gillen|first3=Edward|last4=Delrez|first4=Laetitia|last5=Bouchy|first5=Francois|last6=McCormac|first6=James|last7=Smalley|first7=Barry|last8=Almleaky|first8=Yaseen|last9=Armstrong|first9=David J.|date=2018-08-21|title=Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system|arxiv=1805.01378|journal=Monthly Notices of the Royal Astronomical Society|volume=478|issue=4|pages=4720–4737|doi=10.1093/mnras/sty1193|issn=0035-8711|bibcode=2018MNRAS.478.4720G}}</ref>
'''NGTS-3Ab''' is a gas giant exoplanet that orbits a [[G-type star]]. Its mass is 2.38 Jupiters, it takes 1.7 days to complete one orbit of its star, and is 0.023 AU from its star. Its discovery was announced in 2018.<ref>{{Cite web|url=https://exoplanets.nasa.gov/newworldsatlas/6305/ngts-3-a-b/|title=NGTS-3 A b {{!}} New World Atlas - Exoplanet Exploration: Planets Beyond our Solar System|website=Exoplanet Exploration: Planets Beyond our Solar System|access-date=2018-07-03}}{{dead link|date=June 2021|bot=medic}}{{cbignore|bot=medic}}</ref> The Jupiter-like planet is discovered by 39 astronomers, mainly [[Max Günther]], [[Didier Queloz]], Edward Gillen, Laetitia Delrez, and [[François Bouchet|Francois Bouchy]].<ref name="Günther 2018">{{Cite journal|last=Günther|first=Maximilian N.|last2=Queloz|first2=Didier|last3=Gillen|first3=Edward|last4=Delrez|first4=Laetitia|last5=Bouchy|first5=Francois|last6=McCormac|first6=James|last7=Smalley|first7=Barry|last8=Almleaky|first8=Yaseen|last9=Armstrong|first9=David J.|date=2018-08-21|title=Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system|arxiv=1805.01378|journal=Monthly Notices of the Royal Astronomical Society|volume=478|issue=4|pages=4720–4737|doi=10.1093/mnras/sty1193|issn=0035-8711|bibcode=2018MNRAS.478.4720G}}</ref>

Revision as of 23:14, 21 November 2021

NGTS-3Ab
NGTS-3Ab (white) compared to Jupiter.
NGTS-3Ab compared to Jupiter
Discovery[1]
Discovered byGünther et al.
Discovery date07 May 2018
Transit
Orbital characteristics[1]
0.023+0.007
−0.005 AU
1.67±0.00 d
Inclination89.56°+0.31°
−0.48°
2,457,620.16790±0.00095 d
Semi-amplitude−404±35 km/s
StarNGTS-3
Physical characteristics
1.48±0.37 RJ[1]
Mass2.38±0.26 MJ[1]
Mean density
0.31+0.41
−0.15 g/cm3[1]

NGTS-3Ab is a gas giant exoplanet that orbits a G-type star. Its mass is 2.38 Jupiters, it takes 1.7 days to complete one orbit of its star, and is 0.023 AU from its star. Its discovery was announced in 2018.[2] The Jupiter-like planet is discovered by 39 astronomers, mainly Max Günther, Didier Queloz, Edward Gillen, Laetitia Delrez, and Francois Bouchy.[1]

Overview

NGTS-3Ab was discovered in 2018 by the use of transit method. It is the only planet orbiting around NGTS-3 A, a G6 V class star, situated in the constellation of Columba in 2480 light years from the Sun. The exoplanet orbits its star in about 2 terrestrial days. The orbit is closer to the star than the internal limit of the habitable zone. It has a low density and can be composed of gas. It has a low Earth similarity index (0.06) and should be very different from our planet.[3]

Discovery

The discovery of NGTS-3Ab, a hot Jupiter found orbiting a star in a still visually unresolved binary system, was announced in June 2018. The data regarding the exoplanet is based on the data gathered with the Next Generation Transit Survey (NGTS), SPECULOOS, and HARPS, and enhanced by recent advances with the centroiding technique for NGTS.[1]

The planetary system NGTS-3A was detected by a conjointly model multi-colour photometry, centroids and radial velocity (RV) extraction process. RV cross-correlation functions (CCFs) and study correlations of the bisector inverse span (BIS) are simulated in order to define the characteristics of the exoplanet NGTS-3Ab.[1][4]

See also

Further reading

References

  1. ^ a b c d e f g h Günther, Maximilian N.; Queloz, Didier; Gillen, Edward; Delrez, Laetitia; Bouchy, Francois; McCormac, James; Smalley, Barry; Almleaky, Yaseen; Armstrong, David J. (2018-08-21). "Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system". Monthly Notices of the Royal Astronomical Society. 478 (4): 4720–4737. arXiv:1805.01378. Bibcode:2018MNRAS.478.4720G. doi:10.1093/mnras/sty1193. ISSN 0035-8711.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  2. ^ "NGTS-3 A b | New World Atlas - Exoplanet Exploration: Planets Beyond our Solar System". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2018-07-03.[dead link]
  3. ^ Telechev, Anton. "Exoplorer: ngts-3-a-b". exoplorer.org. Retrieved 2018-07-03.
  4. ^ "NGTS-3 A b". exoplanetarchive.ipac.caltech.edu. Retrieved 2018-07-03.
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