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Kepler-17

Kepler-17
Dữ liệu quan sát
Kỷ nguyên J2000      Xuân phân J2000
Chòm sao Thiên Nga
Xích kinh 19h 53m 34.8643s[1]
Xích vĩ +47° 48′ 54.050″[1]
Cấp sao biểu kiến (V) 14.0[2]
Trắc lượng học thiên thể
Chuyển động riêng (μ) RA: −3778±0032[1] mas/năm
Dec.: −6365±0035[1] mas/năm
Thị sai (π)1.3589 ± 0.0198[1] mas
Khoảng cách2400 ± 30 ly
(740 ± 10 pc)
Các đặc trưng
Kiểu quang phổG2V[2]
Chi tiết [2]
Khối lượng116±006 M☉
Bán kính105±003 R☉
Nhiệt độ5781±85 K
Độ kim loại [Fe/H]0.26 (± 0.1) dex
Tự quay12159±0029 days[3]
Tốc độ tự quay (v sin i)42±05[4] km/s
Tuổi3.0± 1.6[5] Gyr
Tên gọi khác
KOI-203, KIC 10619192, 2MASS J19533486+4748540[4]
Cơ sở dữ liệu tham chiếu
SIMBADdữ liệu
KICdữ liệu

Kepler-17 là một ngôi sao lùn màu vàng dãy chính hoạt động mạnh hơn nhiều so với Mặt Trời của chúng ta với các đốm sao bao phủ khoảng 6% bề mặt của nó.[6] Dấu sao tồn tại lâu dài, với ít nhất một đốm tồn tại trong 1400 ngày.[7]

Hệ hành tinh Kepler-17 [6][7][8]
Thiên thể đồng hành
(thứ tự từ ngôi sao ra) 		Khối lượng Bán trục lớn
(AU) 		Chu kỳ quỹ đạo
(ngày) 		Độ lệch tâm Độ nghiêng Bán kính
b 2.45± 0.014 MJ 0.02591± 0.00037 1.4857108± 2e-07 <0.011 87.2± 0.15° 1.312± 0.018 RJ

Tham khảo

  1. ^ a b c d e Brown, A. G. A.; và đồng nghiệp (Gaia collaboration) (tháng 8 năm 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. Hồ sơ Gaia DR2 cho nguồn này tại VizieR.
  2. ^ a b c “Notes on Kepler-17 b”. Truy cập ngày 15 tháng 1 năm 2017.
  3. ^ 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. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11.
  4. ^ a b “Kepler-17”. SIMBAD. Trung tâm dữ liệu thiên văn Strasbourg. Truy cập ngày 16 tháng 1 năm 2017.
  5. ^ Morris, Brett M.; Agol, Eric; Hebb, Leslie; Hawley, Suzanne L. (2018), “Robust Transiting Exoplanet Radii in the Presence of Starspots from Ingress and Egress Durations”, The Astronomical Journal, 156 (3): 91, arXiv:1807.04886, doi:10.3847/1538-3881/aad3b7, S2CID 119420137
  6. ^ a b Désert, Jean-Michel; và đồng nghiệp (2011). “The Hot-Jupiter Kepler-17b: Discovery, Obliquity from Stroboscopic Starspots, and Atmospheric Characterization”. The Astrophysical Journal Supplement Series. 197 (1). 14. arXiv:1107.5750. Bibcode:2011ApJS..197...14D. doi:10.1088/0067-0049/197/1/14.
  7. ^ a b Valio, Adriana; và đồng nghiệp (2017). “Activity and Rotation of Kepler-17”. The Astrophysical Journal. 835 (2). 294. arXiv:1702.02213. Bibcode:2017ApJ...835..294V. doi:10.3847/1538-4357/835/2/294.
  8. ^ Planet Kepler-17 b on exoplanet.eu

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