For faster navigation, this Iframe is preloading the Wikiwand page for ケプラー25.

ケプラー25

ケプラー25
Kepler-25
星座 こと座
見かけの等級 (mv) 10.623±0.053[1]
分類 恒星
位置
元期:J2000
赤経 (RA, α)  19h 06m 33.2143s[2]
赤緯 (Dec, δ) +39° 29′ 16.358″[2]
固有運動 (μ) 赤経:−0.455±0.040 mas/yr
赤緯:6.169±0.044 [2]
年周視差 (π) 4.0822 ± 0.0236ミリ秒[2]
(誤差0.6%)
距離 799 ± 5 光年[注 1]
(245 ± 1 パーセク[注 1]
物理的性質
半径 1.297±0.015 R[3]
質量 1.159+0.040
−0.051
M[3]
表面重力 4.275+0.007
−0.008
cgs[3]
自転速度 9.5 km/s[4]
自転周期 23.147±0.039[5]
スペクトル分類 F[6]
光度 2.406+0.126
−0.128
L[3]
表面温度 6270±79 K[7]
金属量[Fe/H] −0.05±0.10[7]
年齢 34.5+8.1
−7.2
億年[3]
他のカタログでの名称
2MASS J19063321+3929164、KIC 4349452、KOI-244、TYC 3124-1264-1[8]
Template (ノート 解説) ■Project

ケプラー25 (: Kepler-25) とは、こと座の方向に約799光年離れた場所に存在する恒星である[9]太陽よりもわずかに大きくて重く、光度は太陽の2.4倍。見かけの等級は10.6で、肉眼で見ることは出来ない[1]

惑星系 

[編集]

2011年に、ケプラーによって2つの惑星候補がトランジット法で検出され、その後トランジット時刻変動を用いて惑星であることが確認された[10][11]。3番目の惑星は、2014年1月にフォローアップ観測での視線速度測定によって発見された[4]

ケプラー25の惑星[12][6]
名称
(恒星に近い順)
質量 軌道長半径
天文単位
公転周期
()
軌道離心率 軌道傾斜角 半径
b 8.7+2.5
−2.3
 M
0.068 6.238297±0.000017 0.0029+0.0023
−0.0017
92.827+0.084
−0.083
°
2.748+0.038
−0.035
 R
c 15.2+1.3
−1.6
 M
0.11 12.7207±0.0001 0.0061+0.0049
−0.0041
92.764+0.042
−0.039
°
5.217+0.070
−0.065
 R
d 71.9±9.8 M 122.4+0.0
−0.7
0.13+0.13
−0.09

脚注 

[編集]

注釈

[編集]
  1. ^ a b パーセクは1 ÷ 年周視差(秒)より計算、光年は1÷年周視差(秒)×3.2615638より計算

出典

[編集]
  1. ^ a b Henden, A. A. et al. (2016). “VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)”. VizieR On-line Data Catalog: II/336. Originally Published in: 2015AAS...22533616H 2336. Bibcode2016yCat.2336....0H.  Vizier catalog entry
  2. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051 Gaia DR2 record for this source at VizieR.
  3. ^ a b c d e Silva Aguirre, V. et al. (2015). “Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology”. Monthly Notices of the Royal Astronomical Society 452 (2): 2127–2148. arXiv:1504.07992. Bibcode2015MNRAS.452.2127S. doi:10.1093/mnras/stv1388. https://academic.oup.com/mnras/article/452/2/2127/1064904. 
  4. ^ a b Marcy, Geoffrey W. et al. (2014). “Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets”. The Astrophysical Journal Supplement Series 210 (2): 20. arXiv:1401.4195. Bibcode2014ApJS..210...20M. doi:10.1088/0067-0049/210/2/20. 
  5. ^ McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). “Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators”. The Astrophysical Journal Letters 775 (1): L11. arXiv:1308.1845. Bibcode2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11. 
  6. ^ a b Schneider, Jean, Star: Kepler-25, Paris Observatory, オリジナルの2012-06-16時点におけるアーカイブ。, https://web.archive.org/web/20120616125118/http://exoplanet.eu/star.php?st=Kepler-25 2013年12月18日閲覧。 
  7. ^ a b Huber, Daniel et al. (2013). “Fundamental Properties of Kepler Planet-candidate Host Stars using Asteroseismology”. The Astrophysical Journal 767 (2): 127. arXiv:1302.2624. Bibcode2013ApJ...767..127H. doi:10.1088/0004-637X/767/2/127. 
  8. ^ "Kepler-25". SIMBAD. Centre de données astronomiques de Strasbourg. 2019年10月2日閲覧
  9. ^ Roman, Nancy G. (1987). “Identification of a Constellation From a Position”. Publications of the Astronomical Society of the Pacific 99 (617): 695–699. Bibcode1987PASP...99..695R. doi:10.1086/132034.  Vizier query form
  10. ^ Borucki, William J. et al. (2011). “Characteristics of Planetary Candidates Observed by Kepler. II. Analysis of the First Four Months of Data”. The Astrophysical Journal 736 (1): 19. arXiv:1102.0541. Bibcode2011ApJ...736...19B. doi:10.1088/0004-637X/736/1/19. 
  11. ^ Steffen, Jason H. et al. (2012). “Transit timing observations from Kepler - III. Confirmation of four multiple planet systems by a Fourier-domain study of anticorrelated transit timing variations”. Monthly Notices of the Royal Astronomical Society 421 (3): 2342–2354. arXiv:1201.5412. Bibcode2012MNRAS.421.2342S. doi:10.1111/j.1365-2966.2012.20467.x. https://academic.oup.com/mnras/article/421/3/2342/1078116. 
  12. ^ Mills, Sean M. et al. (2019). “Long-period Giant Companions to Three Compact, Multiplanet Systems”. The Astronomical Journal 157 (4): 145. arXiv:1903.07186. Bibcode2019AJ....157..145M. doi:10.3847/1538-3881/ab0899. 

関連項目

[編集]
{{bottomLinkPreText}} {{bottomLinkText}}
ケプラー25
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?