天園十
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天園十(波江座υ4)是位於波江座的雙星系統,其視星等為3.56[2]。
參考文獻
- van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.
- Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878
, doi:10.1111/j.1365-2966.2008.13596.x.
- Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 編, The Revision of the General Catalogue of Radial Velocities, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 (University of Toronto: International Astronomical Union), June 20–24, 1966, Bibcode:1967IAUS...30...57E.
- Hubrig, S.; et al, Search for low-mass PMS companions around X-ray selected late B stars, Astronomy and Astrophysics, June 2001, 372: 152−164, Bibcode:2001A&A...372..152H, arXiv:astro-ph/0103201
, doi:10.1051/0004-6361:20010452.
- Hummel, Christian A.; et al, The orbit of the mercury-manganese binary 41 Eridani, Astronomy & Astrophysics, March 2017, 600 (L5): 6, Bibcode:2016SPIE.9907E..0QH, arXiv:1703.07668
, doi:10.1117/12.2231859.
- Hubrig, S.; et al, Magnetic fields of HgMn stars, Astronomy & Astrophysics, November 2012, 547: 24, Bibcode:2012A&A...547A..90H, arXiv:1208.2910
, doi:10.1051/0004-6361/201219778, A90.
- David, Trevor J.; Hillenbrand, Lynne A., The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets, The Astrophysical Journal, 2015, 804 (2): 146, Bibcode:2015ApJ...804..146D, arXiv:1501.03154
, doi:10.1088/0004-637X/804/2/146.
- [ * ups04 Eri -- Spectroscopic binary] 請檢查
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值 (幫助). SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13].
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Quick Facts 觀測資料 曆元 J2000.0, 特性 ...
觀測資料 曆元 J2000.0 | |
---|---|
星座 | 波江座 |
星官 | |
赤經 | 04h 17m 53.66241s[1] |
赤緯 | −33° 47′ 54.0569″[1] |
視星等(V) | 3.56[2] |
特性 | |
光譜分類 | B8V + B9.5V[3] |
U−B 色指數 | −0.36[2] |
B−V 色指數 | −0.12[2] |
天體測定 | |
徑向速度 (Rv) | +17.6[4] km/s |
自行 (μ) | 赤經:+62.52[1] mas/yr 赤緯:−7.24[1] mas/yr |
視差 (π) | 18.33 ± 0.15[1] mas |
距離 | 178 ± 1 ly (54.6 ± 0.4 pc) |
絕對星等 (MV) | −0.20[5] |
軌道[6] | |
繞行週期 (P) | 7005432892080000000♠5.0103250±0.0000008 d |
半長軸 (a) | 6991922115621470339♠1.902±0.006 mas |
偏心率 (e) | 0 |
傾斜角 (i) | 7002146200000000000♠146.2±0.1° |
近心點 曆元 (T) | 2454407.7214 ± 0.002 JD |
半振幅 (K1) (primary) | 7001626800000000000♠62.68±0.17[7] km/s |
半振幅 (K2) (secondary) | 7001647000000000000♠64.70±0.15[7] km/s |
詳細資料 [6] | |
υ4 Eri A | |
質量 | 7000317000000000000♠3.17±0.07 M☉ |
半徑 | 7000231999999999999♠2.32±0.18 R☉ |
表面重力 (log g) | 7000421000000000000♠4.21±0.07 |
亮度 | 7002100600000000000♠100.6±4.3 L☉ |
溫度 | 7004129300000000000♠12,930±440[8] K |
自轉速度 (v sin i) | 19[8] km/s |
年齡 | 146[8] Myr |
υ4 Eri B | |
質量 | 7000307000000000000♠3.07±0.07 M☉ |
半徑 | 7000231999999999999♠2.32±0.18 R☉ |
表面重力 (log g) | 7000421000000000000♠4.21±0.07 |
亮度 | 7001874000000000000♠87.4±3.3 L☉ |
溫度 | 12,250 K |
其他命名 | |
參考資料庫 | |
SIMBAD | 資料 |
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