For faster navigation, this Iframe is preloading the Wikiwand page for 格利澤367.

格利澤367

格利澤367(Gliese 367)
觀測資料
曆元 J2000
星座 船帆座
星官
赤經 09h 44m 29.8367s[1]
赤緯 -45° 46′ 35.4256″[1]
視星等(V) 9.979
特性
演化阶段主序星
光谱分类M1[2]
天体测定
徑向速度 (Rv)46.96+0.37
[3] km/s
自行 (μ) 赤经:−462.621+0.014
[3] mas/yr
赤纬:−582.667+0.015
[3] mas/yr
视差 (π)106.1727 ± 0.0141[3] mas
距离30.719 ± 0.004 ly
(9.419 ± 0.001 pc)
詳細資料 [2]
質量0.454+0.011
M
半徑0.457+0.013
R
表面重力 (log g)4.777+0.026
亮度0.0288+0.0027
L
溫度3522+70
K
金属量 [Fe/H]−0.01+0.12
dex
自轉48+2
d
自轉速度 (v sin i)0.48+0.02
km/s
年齡8.0+3.8
−4.6
Gyr
其他命名
CD-45 5378、HIP 47780、2MASS J09442986-4546351、TOI-731、TYC 8168-2031-1、Gaia DR2 5412250540681250560[1]
參考資料庫
SIMBAD资料

格利澤367(GJ 367)是在船帆座,距離地球31光年(9.5秒差距) 的一顆紅矮星。它被懷疑是一顆振幅為0.012星等、週期為5.16年的變星[4]。2015年的一項恒星多樣性調查未能發現格利澤367的任何恒星伴星[5]

行星系

[编辑]

2019年2月至3月,凌日系外行星巡天衛星(Transiting Exoplanet Survey Satellite,TESS)對格利澤367進行了觀測,並將其指定為感興趣的天體[2],並且在2021年1月,儘管確定性很低,但額外的徑向速度資料表明存在一顆軌道週期很短的行星[6]。2021年12月,這顆行星的存在得到了地面和衛星的凌日光度法測光數據的證實[2]

格利澤367b只需7.7小時就可以繞其恒星運行一周,這是所有行星中最短軌道的一顆行星。由於軌道非常接近母恆星,這顆系外行星受到的輻射是地球從太陽接收到的輻射的500多倍[2][7]。GJ 367b上的日間溫度約為1,500 °C(1,770 K;2,730 °F[8]。由於軌道非常靠近母恆星,它很可能被潮汐鎖定[9]。由於極端的溫度,格利澤367b的生命迹象會隨著大氣一起蒸發掉[8]。GJ 367b的核心可能由組成,使其核心類似於水星的核心。GJ 367b的核心密度極高,構成了該行星的大部分質量[8]

截至2021年 (2021-Missing required parameter 1=month!),格利澤367b是距離太陽系10秒差距以內已知體積最小、質量最小的系外行星[10]

格利澤367的行星系[2]
成員
(依恆星距離)
质量 半長軸
(AU)
轨道周期
()
離心率 傾角 半径
b 0.546+0.078
 M
0.0071+0.0002
0.321962+0.000010
−0.000012
0 80.75+0.64
°
0.718+0.054
 R

相關條目

[编辑]

參考資料

[编辑]
  1. ^ 1.0 1.1 1.2 [ CD-45 5378] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文資料中心. 
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 Lam, Kristine W. F.; et al. GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star. Science. 2021, 374 (6572): 1271–1275. PMID 34855492. S2CID 244799656. arXiv:2112.01309可免费查阅. doi:10.1126/science.aay3253. 
  3. ^ 3.0 3.1 3.2 3.3 Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533可免费查阅. doi:10.1051/0004-6361/202039657可免费查阅.  已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  4. ^ Hosey, Altonio D.; Henry, Todd J.; Jao, Wei-Chun; Dieterich, Sergio B.; Winters, Jennifer G.; Lurie, John C.; Riedel, Adric R.; Subasavage, John P. The Solar Neighborhood XXXVI. The Long-Term Photometric Variability of Nearby Red Dwarfs in the V RI Optical Bands. The Astronomical Journal. 2015, 150 (1): 6. Bibcode:2015AJ....150....6H. S2CID 13913564. arXiv:1503.02100可免费查阅. doi:10.1088/0004-6256/150/1/6. 
  5. ^ Ward-Duong, K.; Patience, J.; De Rosa, R. J.; Bulger, J.; Rajan, A.; Goodwin, S. P.; Parker, Richard J.; McCarthy, D. W.; Kulesa, C. The M-dwarfs in Multiples (Min Ms) survey – I. Stellar multiplicity among low-mass stars within 15 pc★. Monthly Notices of the Royal Astronomical Society. 2015, 449 (3): 2618–2637. Bibcode:2015MNRAS.449.2618W. arXiv:1503.00724可免费查阅. doi:10.1093/mnras/stv384. 
  6. ^ Palatnick, Skyler; Kipping, David; Yahalomi, Daniel. Validation of HD 183579b Using Archival Radial Velocities: A Warm Neptune Orbiting a Bright Solar Analog. The Astrophysical Journal Letters. 2021, 909 (1): L6. Bibcode:2021ApJ...909L...6P. S2CID 231719821. arXiv:2101.12137可免费查阅. doi:10.3847/2041-8213/abe0bb. 
  7. ^ ExoFOP TIC 34068865. exofop.ipac.caltech.edu. [7 December 2021]. (原始内容存档于2021-12-08). 
  8. ^ 8.0 8.1 8.2 Iron-Rich Sub-Earth Exoplanet Found Orbiting Gliese 367 | Sci-News.com. Breaking Science News | Sci-News.com. [2021-12-03]. (原始内容存档于2022-01-15) (美国英语). 
  9. ^ Mann, Adam. Metal Planet Orbits Its Star Every 7.7 Hours. The New York Times. 2021-12-02 [2021-12-03]. ISSN 0362-4331. (原始内容存档于2021-12-08) (美国英语). 
  10. ^ Planetary Systems Composite Data. NASA Exoplanet Archive. [7 December 2021]. (原始内容存档于2020-10-07). 
{{bottomLinkPreText}} {{bottomLinkText}}
格利澤367
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?