HD 107146

**HD 107146**
	; 哈伯太空望遠鏡拍攝HD 107146的假色影像，影像中可見星周盤的存在。盤面右側更明亮的原因是盤面傾斜角度面向恆星光線，以及光線的優先向前散射。
觀測資料; 曆元 J2000.0
星座	后髮座
星官
赤經	12h 19m 06.50230s
赤緯	16° 32′ 53.8628″
視星等（V）	7.028
特性
光谱分类	G2V
U−B 色指数	+0.073
B−V 色指数	+0.602
天体测定
徑向速度 (Rv)	1.88 km/s
自行 (μ)	赤经：-174.16 mas/yr ; 赤纬：-148.90 mas/yr
视差 (π)	36.42 ± 0.54 mas
距离	90 ± 1 ly ; (27.5 ± 0.4 pc)
詳細資料
質量	1.09 M☉
半徑	0.993±0.014 R☉
表面重力 (log g)	4.56
亮度	1.1 L☉
溫度	5850 K
金属量 [Fe/H]	0.00 dex
自轉	3.50±1.35 days
年齡	80–200 myr 年
其他命名
	BD+17° 2462, NLTT 30317, SAO 100038, HD 107146, HIP 60074.
參考資料庫
SIMBAD	资料

HD 107146是一顆距離地球約90光年（28秒差距）的恆星，天球上位於后髮座 ^[8]。該恆星的視星等為肉眼不可見的7.028。

概要

HD 107146的物理特性與太陽相近，例如與太陽相同的G2V型光譜^[3]，因此它被認為是類太陽恆星 ^[9]。該恆星的質量為1.09 M_☉，半徑則為0.99 R_☉^[5]。HD 107146是年齡約8000萬至2億年的年輕恆星^[8]。它的自轉軸傾角為相對觀測者視線方向的7001210000000000000♠21+8
−9度，自轉週期為相對於太陽較短暫的3.5日^[5]。

星周盤

2003年，天文學家在HD 107146的觀測資料中確認紅外過量現象^[10]，並且對它的次毫米波觀測則暗示星周盤的存在^[8]，這是首次在光譜型類似太陽的恆星周圍發現岩屑盤，雖然該恆星遠比太陽年輕。2004年，哈伯太空望遠鏡對HD 107146的觀測影像中確認在該恆星周圍空間存在星周盤^[7]^[11]。

HD 107146的星周盤尺寸大約為210 × 300 AU^[8]。盤內溫度51 K（−222 °C），質量約0.10 M_🜨^[8]。天文學家對該岩屑盤的遠紅外線與次毫米波觀測資料分析，以及哈伯太空望遠鏡的觀測都顯示盤內有小顆粒岩屑存在^[7]。盤面似乎有稍微拉長的狀況，因此外表呈橢圓形，短軸位於方位角58° ± 5° 處。如假設該盤實際上為圓形，則該星周盤的平面與天球平面傾角為25° ± 5°^[7]。2009年發表的一篇論文則提出盤內可能有一顆距離母恆星45至75天文單位的行星存在^[9]。

圖集

Transit of behind HD 107146與即將在2020年被星周盤完全遮蔽的背景「害蟲星系」（Vermin Galaxy）^[12]

參考資料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. November 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357.
^ ^2.0 ^2.1 ^2.2 Landolt, A. U., UBVRI photometry of stars useful for checking equipment orientation stability, Astronomical Journal, June 1983, 88: 853–866, Bibcode:1983AJ.....88..853L, doi:10.1086/113372
^ ^3.0 ^3.1 ^3.2 HD 107146. SIMBAD. Centre de Données astronomiques de Strasbourg. [2011-12-14]. （原始内容存档于2019-11-01）.
^ White, Russel J.; et al, High-dispersion optical spectra of nearby stars younger than the Sun, The Astronomical Journal, June 2007, 133 (6): 2524–2536, Bibcode:2007AJ....133.2524W, arXiv:0706.0542 , doi:10.1086/514336
^ ^5.0 ^5.1 ^5.2 ^5.3 ^5.4 ^5.5 Watson, C. A.; et al. On the alignment of debris discs and their host stars' rotation axis - implications for spin-orbit misalignment in exoplanetary systems. Monthly Notices of the Royal Astronomical Society: Letters. May 2011, 413 (1): L71–L75. Bibcode:2011MNRAS.413L..71W. arXiv:1009.4132 . doi:10.1111/j.1745-3933.2011.01036.x.
^ ^6.0 ^6.1 Brugamyer, Erik; et al. Silicon and Oxygen Abundances in Planet-host Stars. The Astrophysical Journal. September 2011, 738 (1). Bibcode:2011ApJ...738...97B. arXiv:1106.5509 . doi:10.1088/0004-637X/738/1/97.
^ ^7.0 ^7.1 ^7.2 ^7.3 Ardila, D. R.; et al. A resolved debris disk around the G2 V star HD 107146. The Astrophysical Journal Letters. 2004, 617: L147–L150. Bibcode:2004ApJ...617L.147A. arXiv:astro-ph/0411422 . doi:10.1086/427434.
^ ^8.0 ^8.1 ^8.2 ^8.3 ^8.4 ^8.5 Williams, Jonathan P.; et al. Detection of cool dust around the G2 V star HD 107146. The Astrophysical Journal. March 2004, 604: 414–419. Bibcode:2004ApJ...604..414W. arXiv:astro-ph/0311583 . doi:10.1086/381721.
^ ^9.0 ^9.1 Corder, S. A.; et al. A resolved ring of debris dust around the solar analog HD 107146. The Astrophysical Journal. 2009, 690: L65–L68. Bibcode:2009ApJ...690L..65C. arXiv:0811.2713 . doi:10.1088/0004-637X/690/1/L65.
^ Metchev, Stanimir A.; Hillenbrand, Lynne A.; Meyer, Michael R. Ten micron observations of nearby young stars. The Astrophysical Journal. January 2004, 600: 435–450. Bibcode:2004ApJ...600..435M. arXiv:astro-ph/0309453 . doi:10.1086/379788.
^ Spitzer and Hubble capture evolving planetary systems. hubblesite.org. December 9, 2004 [2011-12-14]. （原始内容存档于2016-07-06）.
^ Viewing the Vermin Galaxy. www.spacetelescope.org. [29 May 2017]. （原始内容存档于2020-11-24）.

[aaa474_2_653-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. November 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357.

[aj88_853-2] 2.0 ^2.1 ^2.2 Landolt, A. U., UBVRI photometry of stars useful for checking equipment orientation stability, Astronomical Journal, June 1983, 88: 853–866, Bibcode:1983AJ.....88..853L, doi:10.1086/113372

[SIMBAD-3] 3.0 ^3.1 ^3.2 HD 107146. SIMBAD. Centre de Données astronomiques de Strasbourg. [2011-12-14]. （原始内容存档于2019-11-01）.

[aj133_6_2524-4] White, Russel J.; et al, High-dispersion optical spectra of nearby stars younger than the Sun, The Astronomical Journal, June 2007, 133 (6): 2524–2536, Bibcode:2007AJ....133.2524W, arXiv:0706.0542 , doi:10.1086/514336

[mnrasl413_1_L71-5] 5.0 ^5.1 ^5.2 ^5.3 ^5.4 ^5.5 Watson, C. A.; et al. On the alignment of debris discs and their host stars' rotation axis - implications for spin-orbit misalignment in exoplanetary systems. Monthly Notices of the Royal Astronomical Society: Letters. May 2011, 413 (1): L71–L75. Bibcode:2011MNRAS.413L..71W. arXiv:1009.4132 . doi:10.1111/j.1745-3933.2011.01036.x.

[apj738_1-6] 6.0 ^6.1 Brugamyer, Erik; et al. Silicon and Oxygen Abundances in Planet-host Stars. The Astrophysical Journal. September 2011, 738 (1). Bibcode:2011ApJ...738...97B. arXiv:1106.5509 . doi:10.1088/0004-637X/738/1/97.

[apj617_L147-7] 7.0 ^7.1 ^7.2 ^7.3 Ardila, D. R.; et al. A resolved debris disk around the G2 V star HD 107146. The Astrophysical Journal Letters. 2004, 617: L147–L150. Bibcode:2004ApJ...617L.147A. arXiv:astro-ph/0411422 . doi:10.1086/427434.

[apj604_414-8] 8.0 ^8.1 ^8.2 ^8.3 ^8.4 ^8.5 Williams, Jonathan P.; et al. Detection of cool dust around the G2 V star HD 107146. The Astrophysical Journal. March 2004, 604: 414–419. Bibcode:2004ApJ...604..414W. arXiv:astro-ph/0311583 . doi:10.1086/381721.

[apj690_L65-9] 9.0 ^9.1 Corder, S. A.; et al. A resolved ring of debris dust around the solar analog HD 107146. The Astrophysical Journal. 2009, 690: L65–L68. Bibcode:2009ApJ...690L..65C. arXiv:0811.2713 . doi:10.1088/0004-637X/690/1/L65.

[apj600_435-10] Metchev, Stanimir A.; Hillenbrand, Lynne A.; Meyer, Michael R. Ten micron observations of nearby young stars. The Astrophysical Journal. January 2004, 600: 435–450. Bibcode:2004ApJ...600..435M. arXiv:astro-ph/0309453 . doi:10.1086/379788.

[hubblesite-11] Spitzer and Hubble capture evolving planetary systems. hubblesite.org. December 9, 2004 [2011-12-14]. （原始内容存档于2016-07-06）.

[12] Viewing the Vermin Galaxy. www.spacetelescope.org. [29 May 2017]. （原始内容存档于2020-11-24）.

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HD 107146

概要

星周盤

圖集

參考資料

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