编辑“︁HD 107146”︁

{{Starbox begin
| name = HD 107146
}}
{{Starbox image
| image = [[Image:HD 107146 falsecolour.jpg|250px]]
| caption = 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。
}}
{{Starbox observe
| epoch = [[J2000.0]]
| constell = [[后髮座]]
| ra = {{RA|12|19|06.50230}}<ref name=aaa474_2_653/>
| dec = {{DEC|16|32|53.8628}}<ref name=aaa474_2_653/>
| appmag_v = 7.028<ref name=aj88_853/>
}}
{{Starbox character
| class = G2V<ref name=SIMBAD/>
| b-v = +0.602<ref name=aj88_853/>
| u-b = +0.073<ref name=aj88_853/>
| variable = <!--Variability type-->
}}
{{Starbox astrometry
| radial_v = 1.88<ref name=aj133_6_2524/>
| prop_mo_ra = -174.16<ref name=aaa474_2_653/>
| prop_mo_dec = -148.90<ref name=aaa474_2_653/>
| parallax = 36.42
| p_error = 0.54
| parallax_footnote = <ref name=aaa474_2_653/>
}}
{{Starbox detail
| mass = 1.09<ref name=mnrasl413_1_L71/>
| radius = {{val|0.993|0.014}}<ref name=mnrasl413_1_L71/>
| age = 80–200&nbsp;[[年|myr]]<ref name=apj604_414/>
| luminosity = 1.1<ref name=apj617_L147/>
| temperature = {{val|5850}}<ref name=mnrasl413_1_L71/>
| rotation = {{val|3.50|1.35}}&nbsp;days<ref name=mnrasl413_1_L71/>
| metal_fe = 0.00<ref name=apj738_1/>
| gravity = 4.56<ref name=apj738_1/>
}}
{{Starbox catalog
| names = [[波恩星表|BD]]+17°&nbsp;2462, NLTT&nbsp;30317, [[SAO星表|SAO]]&nbsp;100038, [[HD星表|HD]]&nbsp;107146, [[依巴谷星表|HIP]]&nbsp;60074.<ref name=SIMBAD/>
}}
{{Starbox reference
| Simbad = HD+107146
}}
{{Starbox end}}

'''HD 107146'''是一顆距離地球約{{convert|90|ly|pc|lk=on}}的恆星，天球上位於[[后髮座]] <ref name=apj604_414/>。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[[恒星光谱|光譜]]<ref name=SIMBAD/>，因此它被認為是[[類太陽恆星]] <ref name=apj690_L65/>。該恆星的質量為1.09 {{Solar mass|link=y}}，半徑則為0.99 {{Solar radius|link=y}}<ref name=mnrasl413_1_L71/>。HD 107146是年齡約8000萬至2億年的年輕恆星<ref name=apj604_414/>。它的自轉軸傾角為相對觀測者視線方向的{{val|21|8|-9}}度，自轉週期為相對於太陽較短暫的3.5日<ref name=mnrasl413_1_L71/>。

==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<ref name=apj600_435/>，並且對它的次毫米波觀測則暗示[[星周盤]]的存在<ref name=apj604_414/>，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<ref name=apj617_L147/><ref name=hubblesite/>。

HD 107146的星周盤尺寸大約為210 × 300 [[天文單位|AU]]<ref name=apj604_414/>。盤內溫度{{convert|51|K|C |0|lk=on}}，質量約0.10 {{Earth mass|link=y}}<ref name=apj604_414/>。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<ref name=apj617_L147/>。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°<ref name=apj617_L147/>。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<ref name=apj690_L65/>。

==圖集==
<gallery>
Viewing the Vermin Galaxy.jpg|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）<ref>{{cite web|title=Viewing the Vermin Galaxy|url=https://www.spacetelescope.org/images/potw1722a/|website=www.spacetelescope.org|accessdate=29 May 2017|archive-date=2020-11-24|archive-url=https://web.archive.org/web/20201124013624/https://www.spacetelescope.org/images/potw1722a/|dead-url=no}}</ref>
</gallery>

==參考資料==
{{Reflist|30em|refs=

<ref name=aaa474_2_653>{{cite journal | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 |arxiv = 0708.1752 }}</ref>

<ref name=aj133_6_2524>{{citation | display-authors=1 | title=High-dispersion optical spectra of nearby stars younger than the Sun | last1=White | first1=Russel J. | last2=Gabor | first2=Jared M. | last3=Hillenbrand | first3=Lynne A. | journal=The Astronomical Journal | volume=133 | issue=6 | pages=2524–2536 |date=June 2007 | doi=10.1086/514336 | bibcode=2007AJ....133.2524W |arxiv = 0706.0542 }}</ref>

<ref name=aj88_853>{{citation | last1=Landolt | first1=A. U. | title=UBVRI photometry of stars useful for checking equipment orientation stability | journal=Astronomical Journal | volume=88 | pages=853–866 |date=June 1983 | doi=10.1086/113372 | bibcode=1983AJ.....88..853L }}</ref>

<ref name=SIMBAD>{{Cite web | title=HD 107146 | work=SIMBAD | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+107146 | accessdate=2011-12-14 | archive-date=2019-11-01 | archive-url=https://web.archive.org/web/20191101140640/http://simbad.u-strasbg.fr/simbad/sim-id%3FIdent%3DHD%2B107146 | dead-url=no }}</ref>

<ref name=apj604_414>{{Cite journal | display-authors=1 | last1=Williams | first1=Jonathan P. | last2=Najita | first2=Joan | last3=Liu | first3=Michael C. | last4=Bottinelli | first4=Sandrine | last5=Carpenter | first5=John M. | last6=Hillenbrand | first6=Lynne A. | last7=Meyer | first7=Michael R. | last8=Soderblom | first8=David R. | title=Detection of cool dust around the G2 V star HD 107146 | url=https://archive.org/details/sim_astrophysical-journal_2004-03-20_604_1/page/414 |date=March 2004 | volume=604 | pages=414–419 | arxiv=astro-ph/0311583 | journal=The Astrophysical Journal | doi=10.1086/381721 | bibcode=2004ApJ...604..414W }}</ref>

<ref name=apj600_435>{{Cite journal | last1=Metchev | first1=Stanimir A. | last2=Hillenbrand | first2=Lynne A. | last3=Meyer | first3=Michael R. | title=Ten micron observations of nearby young stars | url=https://archive.org/details/sim_astrophysical-journal_2004-01-01_600_1/page/434 |date=January 2004 | journal=The Astrophysical Journal | volume=600 | pages=435–450| doi=10.1086/379788 | bibcode=2004ApJ...600..435M | arxiv=astro-ph/0309453 }}</ref>

<ref name=apj617_L147>{{Cite journal | display-authors=1 | last1=Ardila | first1=D. R. | last2=Golimowski | first2=D. A. | last3=Krist | first3=J. E. | last4=Clampin | first4=M. | last5=Williams | first5=J. P. | last6=Blakeslee | first6=J. P. | last7=Ford | first7=H. C. | last8=Hartig | first8=G. F. | last9=Illingworth | first9=G. D. | title=A resolved debris disk around the G2 V star HD 107146 | journal=The Astrophysical Journal Letters | volume=617 | date=2004 | pages=L147–L150 | doi = 10.1086/427434 | bibcode=2004ApJ...617L.147A | arxiv = astro-ph/0411422 }}</ref>

<ref name=apj690_L65>{{cite journal | display-authors=1 | last1=Corder | first1=S. A. | first2=John M. | last2=Carpenter | first3=Anneila I. | last3=Sargent | first4=B. Ashley | last4=Zauderer | first5=Melvyn C. H. | last5=Wright | first6=Stephen M. | last6=White | first7=David P. | last7=Woody | first8=Peter | last8=Teuben | first9=Stephen L. | last9=Scott | title=A resolved ring of debris dust around the solar analog HD 107146 | journal=The Astrophysical Journal | volume=690 | date=2009 | pages=L65–L68 | arxiv=0811.2713 | bibcode=2009ApJ...690L..65C | doi=10.1088/0004-637X/690/1/L65 }}</ref>

<ref name=hubblesite>{{Cite web | title=Spitzer and Hubble capture evolving planetary systems | date=December 9, 2004 | publisher=hubblesite.org | url=http://hubblesite.org/newscenter/archive/releases/2004/33/text/ | accessdate=2011-12-14 | archive-date=2016-07-06 | archive-url=https://web.archive.org/web/20160706163105/http://hubblesite.org/newscenter/archive/releases/2004/33/text/ | dead-url=no }}</ref>

<ref name=mnrasl413_1_L71>{{cite journal | display-authors=1 | last1=Watson | first1=C. A. | last2=Littlefair | first2=S. P. | last3=Diamond | first3=C. | last4=Collier Cameron | first4=A. | last5=Fitzsimmons | first5=A. | last6=Simpson | first6=E. | last7=Moulds | first7=V. | last8=Pollacco | first8=D. | title=On the alignment of debris discs and their host stars' rotation axis - implications for spin-orbit misalignment in exoplanetary systems | journal=[[皇家天文學會月報|Monthly Notices of the Royal Astronomical Society: Letters]] | volume=413 | issue=1 | pages=L71–L75 |date=May 2011 | doi=10.1111/j.1745-3933.2011.01036.x | bibcode=2011MNRAS.413L..71W |arxiv = 1009.4132 }}</ref>

<ref name=apj738_1>{{cite journal | display-authors=1 | last1=Brugamyer | first1=Erik | last2=Dodson-Robinson | first2=Sarah E. | last3=Cochran | first3=William D. | last4=Sneden | first4=Christopher | title=Silicon and Oxygen Abundances in Planet-host Stars | journal=The Astrophysical Journal | volume=738 | issue=1 |date=September 2011 | doi=10.1088/0004-637X/738/1/97 | bibcode=2011ApJ...738...97B |arxiv = 1106.5509 }}</ref>

<ref name=apj738_1>{{cite journal | display-authors=1 | last1=Brugamyer | first1=Erik | last2=Dodson-Robinson | first2=Sarah E. | last3=Cochran | first3=William D. | last4=Sneden | first4=Christopher | title=Silicon and Oxygen Abundances in Planet-host Stars | journal=The Astrophysical Journal | volume=738 | issue=1 |date=September 2011 | doi=10.1088/0004-637X/738/1/97 | bibcode=2011ApJ...738...97B |arxiv = 1106.5509 }}</ref>
}}

{{Stars of Coma Berenices}}

[[Category:后发座]]
[[Category:HD和HDE天體|107146]]
[[Category:G型主序星]]
[[Category:星周盤]]
[[Category:HIP天體|060074]]
[[Category:BD、CD和CP天体|BD+17° 2462]]