imported>Túrelio：(GR) Duplicate: File:Artist's impression of the planet NGTS-1b (24234693278).jpg → File:NGTS-1 b illustration.jpg Exact or scaled-down duplicate: c::File:NGTS-1 b illustration.jpg

2023-04-19T20:15:08Z

(GR) Duplicate: File:Artist's impression of the planet NGTS-1b (24234693278).jpg → File:NGTS-1 b illustration.jpg Exact or scaled-down duplicate: c::File:NGTS-1 b illustration.jpg

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{{Planetbox begin
| name = NGTS-1b
}}
{{Planetbox image
| image = NGTS-1 b illustration.jpg
| caption = 藝術家所繪製NGTS-1b與其母恆星NGTS-1的想像圖
}}
{{Planetbox star
| star = NGTS-1<ref name="ARX-20171031" />
| constell = [[天鸽座]]
| RA = {{RA|05|30|52.0}}
| DEC = {{DEC|-36|37|51}}
| dist_ly = 600<ref name="SP-20171031" />
| dist_pc = 224.0<ref name="EXP-2017">{{cite web |author=Staff |title=Planet NGTS-1 b |url=http://exoplanet.eu/catalog/ngts-1_b/ |date=2017 |work=[[太陽系外行星百科|Extrasolar Planets Encyclopaedia]] |accessdate=1 November 2017 |archive-date=2018-02-06 |archive-url=https://web.archive.org/web/20180206143229/http://exoplanet.eu/catalog/ngts-1_b/ |dead-url=no }}</ref>
| class = M0.5<ref name="ARX-20171031"/>
| app_mag = 14.38<ref name="ARX-20171031" />
| mass = 0.617<ref name="EXP-2017" />
| radius = 0.573<ref name="EXP-2017" />
| temperature = 3916<ref name="ARX-20171031" />
| metallicity = 0.0<ref name="EXP-2017" />
| age =
}}
{{Planetbox character
| mass = 0.812<ref name="EXP-2017" />
| radius = 1.33<ref name="EXP-2017" />
| temperature = 790.0<ref name="EXP-2017" />
}}
{{Planetbox orbit
| semimajor = 0.0326<ref name="EXP-2017" />
| period = 2.6473 JD<ref name="EXP-2017" />
| eccentricity = 0.016<ref name="EXP-2017" />
| inclination = 82.8<ref name="EXP-2017" />
| t_transit = 2457720.65939 (?)<ref name="EXP-2017" />
}}
{{Planetbox discovery
| discovery_date = 2017
| discoverers = [[次世代凌星巡天]]<ref name="SP-20171031" />
| discovery_method = [[次世代凌星巡天]]與[[萊昂哈德·歐拉望遠鏡]]（EulerCam photometric） 共同發現、[[高精度徑向速度行星搜索器]]隨後觀測到。
| discovery_status = 已確認<ref name="ARX-20171031" />
}}
{{Planetbox catalog
| names =
}}
{{Planetbox reference
| star = NGTS-1
| planet = b
}}
{{Planetbox end}}

'''NGTS-1b'''是一個已確認的[[熱木星]]型[[太陽系外行星]]，母恆星是質量與半徑都大約為太陽一半的[[紅矮星]]NGTS-1，軌道週期2.65日<ref name="TI-20171102">{{cite web |1= |last=Griffini |first=Andrew |title=Huge 'monster' planet could challenge scientists' theory of how worlds form |url=https://timesofindia.indiatimes.com/home/science/huge-monster-planet-could-challenge-scientists-theory-of-how-worlds-form/articleshow/61456042.cms |date=2 November 2017 |work=[[印度时报|Times of India]] |accessdate=2 November 2017 |deadurl=yes |archiveurl=https://web.archive.org/web/20171102225240/https://timesofindia.indiatimes.com/home/science/huge-monster-planet-could-challenge-scientists-theory-of-how-worlds-form/articleshow/61456042.cms |archivedate=2017年11月2日 |df= }}</ref>。NGTS-1行星系距離地球約600光年，在天球上位於[[天鸽座]] <ref name="ARX-20171031">{{cite journal |author=Bayliss, Danile |display-authors=etal |title=NGTS-1b: A hot Jupiter transiting an M-dwarf |url=https://arxiv.org/pdf/1710.11099v1.pdf |format=[[PDF]] |work=[[arXiv]] |arxiv=1710.11099v1 |date=31 October 2017 |accessdate=1 November 2017 |archive-date=2018-02-15 |archive-url=https://web.archive.org/web/20180215011746/https://arxiv.org/pdf/1710.11099v1.pdf |dead-url=no }}</ref><ref name="SP-20171031">{{cite web |last=Lewin |first=Sarah |title=Monster Planet, Tiny Star: Record-Breaking Duo Puzzles Astronomers |url=https://www.space.com/38625-monster-planet-circles-tiny-star.html |date=31 October 2017 |work=[[Space.com]] |accessdate=1 November 2017 |archive-date=2017-11-07 |archive-url=https://web.archive.org/web/20171107012823/https://www.space.com/38625-monster-planet-circles-tiny-star.html |dead-url=no }}</ref><ref name="PHY-20171031">{{cite web |author=Staff |title='Monster' planet discovery challenges formation theory |url=https://phys.org/news/2017-10-monster-planet-discovery-formation-theory.html |date=31 October 2017 |work=[[Phys.org]] |accessdate=1 November 2017 |archive-date=2017-11-07 |archive-url=https://web.archive.org/web/20171107025639/https://phys.org/news/2017-10-monster-planet-discovery-formation-theory.html |dead-url=no }}</ref>。

== 發現 ==
NGTS-1b是由[[次世代凌星巡天]]所發現<ref name="SP-20171031" />。發現該行星的論文第一作者，[[华威大学]]的丹尼爾·貝利斯（Daniel Bayliss）對這項發現表示：「NGTS-1b的發現對我們而言完全是一個驚喜–這樣巨大的行星先前被認為不會在如此小的恆星旁發現–重要的是，我們現在的挑戰是要了解這樣的行星在銀河系中到底有多普遍，而次世代凌星巡天有能力做到這一點。」<ref name="PHY-20171031" />

== 行星狀態 ==
===質量、半徑與表面溫度===
NGTS-1b是屬於[[氣態巨行星]]中的[[熱木星]]，質量大約為0.812 [[木星質量|MJ]]，半徑為1.33 RJ<ref name="ARX-20171031" /><ref name="SP-20171031" />。

===母恆星===
NGTS-1b的母恆星是[[恆星光譜|光譜型]]M0.5的[[紅矮星]]，質量為{{solar mass|0.617}}，半徑為{{solar radius|0.573}}<ref name="SP-20171031" /><ref name="EXP-2017" />。

=== 軌道 ===
NGTS-1b的軌道半徑約450萬公里，軌道周期約2.6473日<ref name="ARX-20171031" /><ref name="SP-20171031" /><ref name="EXP-2017" /><ref name="GZ-20171031">{{cite web |last=Dvorsky |first=George |title=This Tiny Star Hosts a Planet Nearly the Size of Jupiter |url=https://gizmodo.com/this-tiny-star-hosts-a-planet-nearly-the-size-of-jupite-1820017394 |date=31 October 2017 |work=[[Gizmodo]] |accessdate=1 November 2017 |archive-date=2017-12-30 |archive-url=https://web.archive.org/web/20171230132640/https://gizmodo.com/this-tiny-star-hosts-a-planet-nearly-the-size-of-jupite-1820017394 |dead-url=no }}</ref>。

== 參見 ==
* {{link-en|克卜勒45|Kepler-45}}
* {{link-en|太陽系外行星列表|List of extrasolar planets}}

== 參考資料 ==
{{reflist}}

== 外部連結 ==
* [https://www.eso.org/sci/publications/messenger/archive/no.165-sep16/messenger-no165-10-12.pdf The Next Generation Transit Survey Becomes Operational at Paranal]{{Wayback|url=https://www.eso.org/sci/publications/messenger/archive/no.165-sep16/messenger-no165-10-12.pdf |date=20170418163601 }}, ESO archive, The Messenger 165 – September 2016

{{2017 in space}}

{{portal bar|Astronomy|}}

{{Sky|05|30|52.0|-|36|37|51|600}}

[[Category:天鸽座]]
[[Category:2017年发现的系外行星]]
[[Category:热木星]]
[[Category:凌星現象]]

NGTS-1b - 版本历史

imported>Túrelio：​(GR) Duplicate: File:Artist's impression of the planet NGTS-1b (24234693278).jpg → File:NGTS-1 b illustration.jpg Exact or scaled-down duplicate: c::File:NGTS-1 b illustration.jpg

imported>Túrelio：(GR) Duplicate: File:Artist's impression of the planet NGTS-1b (24234693278).jpg → File:NGTS-1 b illustration.jpg Exact or scaled-down duplicate: c::File:NGTS-1 b illustration.jpg