查看“︁Sh2-106”︁的源代码

{{Infobox nebula
| name = Sh2-106
| image = [[File:Star-forming region S106 (captured by the Hubble Space Telescope).jpg|250px]]
| caption =沙普利斯2-106
| type = 電離氫區
| subtype= [[雙極星雲]]
| epoch = J2000.0
| ra = {{RA|20|27|27.1}}<ref name="simbad">{{cite web
  | title=SIMBAD Astronomical Database
  | work=Results for SH 2-106
  | url=http://simbad.u-strasbg.fr/Simbad
  | accessdate=2013-01-13
  | archive-date=2019-05-01
  | archive-url=https://web.archive.org/web/20190501023034/http://simbad.u-strasbg.fr/Simbad
  | dead-url=no
  }}</ref>
| dec = {{DEC|+37|22|39}}<ref name="simbad" />
| dist_ly = 2,000
| dist_pc = 600
| appmag_v =
| size_v = 3′ × 3′
| constellation  = [[天鵝座]]
| absmag_v =
| notes =
| names = S106
}}
'''Sh2-106'''<ref name="nasa-sa">{{cite web |url=http://www.nasa.gov/mission_pages/hubble/science/snow-angel.html |title=Hubble Serves Up a Holiday Snow Angel |date=6 Dec 2011 |author=NASA, ESA, and the Hubble Heritage Team (STScI/AURA) |accessdate=13 Jan 2013 |archive-date=2016-03-05 |archive-url=https://web.archive.org/web/20160305000431/http://www.nasa.gov/mission_pages/hubble/science/snow-angel.html |dead-url=no }}</ref>是位於[[天鵝座]]的一個[[電離氫區]]和[[恆星形成]]區。估計這個[[電離氫區]]距離[[地球]]大約2,000[[光年]]（600[[秒差距]]），是在[[銀河系]]內一個孤立的區域<ref name="nasa-sa" />。

在星雲的中心是一顆從兩極噴出熱氣體，形成雙極結構的年輕大質量恆星。圍繞著這顆恆星的塵埃也被恆星電離。這個星雲的跨度約2光年<ref name="esa">{{cite web |url=http://www.esa.int/Our_Activities/Space_Science/Young_star_rebels_against_its_parent_cloud |title=Young star rebels against its parent cloud |date=15 Dec 2011 |accessdate=13 Jan 2013 |archive-date=2016-03-03 |archive-url=https://web.archive.org/web/20160303225940/http://www.esa.int/Our_Activities/Space_Science/Young_star_rebels_against_its_parent_cloud |dead-url=no }}</ref>。

== 中心恆星 ==
中心恆星，相信是在10萬年前生成的，通常被稱為S106 IR或S106 IRS 4<ref name="apod">{{Cite APOD |title=Star Forming Region S106  |date=7 Nov 2011 |access-date=13 Jan 2013}}</ref>，是顆質量大約15倍太陽質量的大質量恆星。從它的兩極向周圍噴發的噴流，加熱周圍物質的溫度至大約10,000℃<ref name="esa" />。以未被恆星噴流電離的塵埃反射來自恆星的光，估計其表面溫度約為37,000K，所以它被歸類為[[恆星光譜|O8]]。它每年經由[[恆星風]]流失的質量約為10<sup>−6</sup> [[太陽質量| <math>\begin{smallmatrix}M_\odot\end{smallmatrix}</math>]]，物質噴射的速度大約是100 km/s<ref>{{cite journal |title =Radio images of the bipolar H II region S106 |last1=Bally |first1=J. |last2=Snell |first2=R.L. |last3=Predmore |first3=R. |date=1 Sep 1983 |pages=154–162 |volume =272 |journal =Astrophysical Journal, Part 1 |bibcode=1983ApJ...272..154B |doi =10.1086/161272 |issn=0004-637X}}</ref>。

研究其影像揭示，在這個恆星形成區已經創造了數以百計低質量的[[棕矮星]]<ref name="apod" />和[[原恆星]]<ref name="harvard-verylow">{{cite journal |title=Very Low Luminosity Young Cluster and the Luminosity and Mass Functions in S106 |first1=Yumiko |last1=Oasa |first2=Motohide |last2=Tamura |last3=Nakajima |first3=Yasushi |last4=Itoh |first4=Itoh |last5=Maihara |first5=Toshinori |last6=Iwamuro |first6=Fumihiko |last7=Motohara |first7=Kentaro |last8=Saeko |first8=S. |last9=Hayashi |first9=Masahiko |date=Mar 2006 |journal=The Astronomical Journal|pages=965–978 |doi=10.1086/500086 |bibcode=2006AJ....131.1608O |volume=131 |issue=3|display-authors=9 |last10=Kaifu |first10=Norio }}</ref>。

== 參考資料 ==
{{reflist}}

{{Sh2 objects}}

[[Category:電離氫區]]
[[Category:發射星雲]]
[[Category:天鵝座]]
[[Category:沙普利斯天體]]