开普勒-160星座天琴座中的主序带恒星,大约在离开银河臂的宽处。由美国国家航空暨太空总署领导的开普勒任务首先详细研究,发现他有颗类地行星。这颗恒星在质量和半径上与太阳非常相似[3][2],有三颗已确认的行星和一颗未经证实的行星围绕它运行。

开普勒-160
观测资料
历元 J2000
星座 天琴座
星官
赤经 19h 11m 05.6526s[1]
赤纬 +42° 52′ 09.4725″[1]
视星等(V) 13.101
特性
演化阶段G2V
J−H 色指数0.359
J−K 色指数0.408
变星类型ROT,行星凌
天体测定
自行 (μ) 赤经:3.476+0.032
[1] mas/yr
赤纬:-5.212+0.035
[1] mas/yr
视差 (π)1.0385 ± 0.0183 mas
距离3,140 ± 60 ly
(960 ± 20 pc)
详细资料
半径1.118+0.015
−0.045
[2] R
表面重力 (log g)4.515[3]
亮度1.01+0.05
[2] L
温度5471+115
−37
[2] K
金属量 [Fe/H]-0.361 dex
其他命名
KOI-456、​KIC 7269974、​2MASS J19110565+4252094[1]
参考数据库
SIMBAD资料
KIC资料

特性

编辑

开普勒-160恒星相当古老,没有可探测到的星周盘[4]。这颗恒星的金属量是未知的,据报导的值相互冲突,是太阳金属量的40%或160%[5][6]

在这个系统(以及所有其他系统)中,搜索外星智慧突破聆听没有发现潜在的技术签名英语Technosignature[7]

行星系

编辑

开普勒-160系统中的两颗行星候选者于2010年被发现,于2011年初发表[8],并在2014年确认[9]。尽管它们的轨道周期比接近1:3,但行星开普勒-160b和开普勒-160c没有轨道共振[10]

2020年发现了位于适居带的另一块岩石凌日行星候选者KOI-456.04[2],由于凌日时间变化解中的残差,怀疑有更多的非凌日行星。据研究人员所知,KOI-456.04看起来不到地球大小的两倍,而且绕开普勒-160运行的距离,显然与地球到太阳的距离大致相同(一个完整的轨道是378天)。也许最重要的是,它接收的光量大约是地球从太阳获得的93%[11]。非凌日行星候选者开普勒-160d的质量在1到100个地球质量之间,轨道周期在大约7到50天之间[2]

开普勒-160的行星系[2]
成员
(依恒星距离)
质量 半长轴
(AU)
轨道周期
()
离心率 倾角 半径
b 0.05511+0.0019
−0.0037
4.309397+0.000013
−0.000012
0 1.715+0.061
−0.047
 R
c 0.1192+0.004
−0.008
13.699429+0.000018
0 3.76+0.23
−0.09
 R
d 1—100 M 7—50
e (未确认) ? 1.089+0.037
−0.073
378.417+0.028
−0.025
0

相关条目

编辑

参考资料

编辑
  1. ^ 1.0 1.1 1.2 1.3 1.4 Kepler-160 -- Rotationally variable Star. [2023-03-08]. (原始内容存档于2023-03-08). 
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Heller, René; Hippke, Michael; Freudenthal, Jantje; Rodenbeck, Kai; Batalha, Natalie M.; Bryson, Steve. Transit least-squares survey. Astronomy & Astrophysics. 2020, 638: A10. S2CID 219260293. arXiv:2006.02123 . doi:10.1051/0004-6361/201936929. 
  3. ^ 3.0 3.1 Borucki, William J.; Koch, David G.; Basri, Gibor; Batalha, Natalie; Boss, Alan; Brown, Timothy M.; Caldwell, Douglas; Christensen-Dalsgaard, Jørgen; Cochran, William D.; Devore, Edna; Dunham, Edward W.; Dupree, Andrea K.; Gautier Iii, Thomas N.; Geary, John C.; Gilliland, Ronald; Gould, Alan; Howell, Steve B.; Jenkins, Jon M.; Kjeldsen, Hans; Latham, David W.; Lissauer, Jack J.; Marcy, Geoffrey W.; Monet, David G.; Sasselov, Dimitar; Tarter, Jill; Charbonneau, David; Doyle, Laurance; Ford, Eric B.; Fortney, Jonathan; et al. Characteristics Ofkeplerplanetary Candidates Based on the First Data Set. The Astrophysical Journal. 2011, 728 (2): 117. Bibcode:2011ApJ...728..117B. S2CID 93116. arXiv:1006.2799 . doi:10.1088/0004-637X/728/2/117. 
  4. ^ Lawler, S. M.; Gladman, B. Debris Disks Inkeplerexoplanet Systems. The Astrophysical Journal. 2012, 752 (1): 53. Bibcode:2012ApJ...752...53L. S2CID 119215667. arXiv:1112.0368 . doi:10.1088/0004-637X/752/1/53. 
  5. ^ Rowe, Jason F.; Bryson, Stephen T.; Marcy, Geoffrey W.; Lissauer, Jack J.; Jontof-Hutter, Daniel; Mullally, Fergal; Gilliland, Ronald L.; Issacson, Howard; Ford, Eric; Howell, Steve B.; Borucki, William J.; Haas, Michael; Huber, Daniel; Steffen, Jason H.; Thompson, Susan E.; Quintana, Elisa; Barclay, Thomas; Still, Martin; Fortney, Jonathan; Gautier, T. N.; Hunter, Roger; Caldwell, Douglas A.; Ciardi, David R.; Devore, Edna; Cochran, William; Jenkins, Jon; Agol, Eric; Carter, Joshua A.; Geary, John. Validation Ofkepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-Planet Systems. The Astrophysical Journal. 2014, 784 (1): 45. Bibcode:2014ApJ...784...45R. S2CID 119118620. arXiv:1402.6534 . doi:10.1088/0004-637X/784/1/45. 
  6. ^ Petigura, Erik A.; Howard, Andrew W.; Marcy, Geoffrey W.; Johnson, John Asher; Isaacson, Howard; Cargile, Phillip A.; Hebb, Leslie; Fulton, Benjamin J.; Weiss, Lauren M.; Morton, Timothy D.; Winn, Joshua N.; Rogers, Leslie A.; Sinukoff, Evan; Hirsch, Lea A.; Crossfield, Ian J. M. The California-Kepler Survey. I. High-resolution Spectroscopy of 1305 Stars HostingKepler Transiting Planets. The Astronomical Journal. 2017, 154 (3): 107. Bibcode:2017AJ....154..107P. S2CID 55183141. arXiv:1703.10400 . doi:10.3847/1538-3881/aa80de. 
  7. ^ Perez, Karen; Brzycki, Bryan; Gajjar, Vishal; Isaacson, Howard; Siemion, Andrew; Croft, Steve; DeBoer, David; Lebofsky, Matt; MacMahon, David H. E.; Price, Danny C.; Sheikh, Sofia; Drew, Jamie; Pete Worden, S., Breakthrough Listen Search for Technosignatures Towards the Kepler-160System, Research Notes of the American Astronomical Society, 2020, 4 (6): 97, Bibcode:2020RNAAS...4...97P, S2CID 220042074, arXiv:2006.13789 , doi:10.3847/2515-5172/ab9f36 
  8. ^ Lissauer, Jack J.; Ragozzine, Darin; Fabrycky, Daniel C.; Steffen, Jason H.; Ford, Eric B.; Jenkins, Jon M.; Shporer, Avi; Holman, Matthew J.; Rowe, Jason F.; Quintana, Elisa V.; Batalha, Natalie M.; Borucki, William J.; Bryson, Stephen T.; Caldwell, Douglas A.; Carter, Joshua A.; Ciardi, David; Dunham, Edward W.; Fortney, Jonathan J.; Gautier, Iii, Thomas N.; Howell, Steve B.; Koch, David G.; Latham, David W.; Marcy, Geoffrey W.; Morehead, Robert C.; Sasselov, Dimitar. Architecture and Dynamics of Kepler 's Candidate Multiple Transiting Planet Systems. The Astrophysical Journal Supplement Series. 2011, 197 (1): 8. Bibcode:2011ApJS..197....8L. S2CID 43095783. arXiv:1102.0543 . doi:10.1088/0067-0049/197/1/8. 
  9. ^ Planet Kepler-160 b on exoplanet.eu. [2023-03-08]. (原始内容存档于2020-06-05). 
  10. ^ Veras, Dimitri; Ford, Eric B. Identifying non-resonant Kepler planetary systems. Monthly Notices of the Royal Astronomical Society: Letters. 2012, 420 (1): L23–L27. Bibcode:2012MNRAS.420L..23V. S2CID 55625425. arXiv:1111.0299 . doi:10.1111/j.1745-3933.2011.01185.x. 
  11. ^ Patel, Neel V. Astronomers have found a planet like Earth orbiting a star like the sun. MIT Technology Review. 2020-06-05 [2020-06-07]. (原始内容存档于2023-05-25) (英语).