天苑十一

**天苑十一**
觀測資料; 曆元 J2000.0 (ICRS)
星座	波江座
星官
赤經	03h 19m 31.00224s[1]
赤緯	−21° 45′ 28.3049″[1]
視星等（V）	3.65[2]
特性
光谱分类	M3/4 III[3]
U−B 色指数	+1.79[2]
B−V 色指数	+1.61[2]
变星类型	Lb[4]
天体测定
徑向速度 (Rv)	+41.7±0.7[5] km/s
自行 (μ)	赤经：+51.89[1] mas/yr ; 赤纬：+32.92[1] mas/yr
视差 (π)	10.71 ± 0.54[1] mas
距离	300 ± 20 ly ; (93 ± 5 pc)
绝对星等 (MV)	−0.79[6]
詳細資料
質量	1.8±0.3[7] M☉
半徑	106[8] R☉
亮度	1,537[9] L☉
溫度	3,712[7] K
其他命名
	τ4 Eridani, τ4 Eri, 16 Eridani, BD-22° 584, HD 20720, HIP 15474, HR 1003, SAO 168460.[10]
參考資料庫
SIMBAD	资料

天苑十一（波江座τ4）是位于波江座的双星系统，其视星等为3.65。

参考文献

van Leeuwen, F., , 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., , SIMBAD, 1986, Bibcode:1986EgUBV........0M.
Houk, N.; Smith-Moore, M., 4, 1988, Bibcode:1988MSS...C04....0H.
Ruban, E. V.; et al, , Astronomy Letters, September 2006, 32 (9): 604–607, Bibcode:2006AstL...32..604R, doi:10.1134/S1063773706090052.
Gontcharov, G. A., , Astronomy Letters, November 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, arXiv:1606.08053 , doi:10.1134/S1063773706110065.
Cardini, D., , Astronomy and Astrophysics, January 2005, 430: 303−311, Bibcode:2005A&A...430..303C, arXiv:astro-ph/0409683 , doi:10.1051/0004-6361:20041440.
Halabi, Ghina M.; Eid, Mounib El. . Monthly Notices of the Royal Astronomical Society. 2015, 451 (3): 2957. Bibcode:2015MNRAS.451.2957H. arXiv:1507.01517 . doi:10.1093/mnras/stv1141.
Lang, Kenneth R., , Astronomy and astrophysics library 1 3, Birkhäuser, 2006 [2018-02-23], ISBN 3-540-29692-1, （原始内容存档于2019-05-20）. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(93\cdot 10.58\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 212\cdot R_{\bigodot }\end{aligned}}$
McDonald, I.; et al, , Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037 , doi:10.1111/j.1365-2966.2012.21873.x.
. SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13].

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[vanLeeuwen2007-1] van Leeuwen, F., , Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.

[Mermilliod1986-2] Mermilliod, J.-C., , SIMBAD, 1986, Bibcode:1986EgUBV........0M.

[houk1988-3] Houk, N.; Smith-Moore, M., 4, 1988, Bibcode:1988MSS...C04....0H.

[Ruban2006-4] Ruban, E. V.; et al, , Astronomy Letters, September 2006, 32 (9): 604–607, Bibcode:2006AstL...32..604R, doi:10.1134/S1063773706090052.

[Gontcharov2006-5] Gontcharov, G. A., , Astronomy Letters, November 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, arXiv:1606.08053 , doi:10.1134/S1063773706110065.

[Cardini2005-6] Cardini, D., , Astronomy and Astrophysics, January 2005, 430: 303−311, Bibcode:2005A&A...430..303C, arXiv:astro-ph/0409683 , doi:10.1051/0004-6361:20041440.

[halabi2015-7] Halabi, Ghina M.; Eid, Mounib El. . Monthly Notices of the Royal Astronomical Society. 2015, 451 (3): 2957. Bibcode:2015MNRAS.451.2957H. arXiv:1507.01517 . doi:10.1093/mnras/stv1141.

[lang2006-8] Lang, Kenneth R., , Astronomy and astrophysics library 1 3, Birkhäuser, 2006 [2018-02-23], ISBN 3-540-29692-1, （原始内容存档于2019-05-20）. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(93\cdot 10.58\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 212\cdot R_{\bigodot }\end{aligned}}$

[Mcdonald2012-9] McDonald, I.; et al, , Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037 , doi:10.1111/j.1365-2966.2012.21873.x.

[SIMBAD-10] . SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13].