NGC 2023

**NGC 2023**
星云
	发射星云
	紧挨著马头星云的NGC 2023
观测资料: J2000 epoch
赤经	05h 41m 37.9s
赤纬	−02° 15′ 52″
距离	1,300 ly（400 pc）光年
视尺度(V)	10'×10'
星座	猎户座
名称	NGC 2023, LBN 954, IRAS 05391-0217
	相关条目：星云列表

NGC 2023是在赤道星座猎户座中的一个发射和反射星云。它是由出生于德国的天文学家威廉·赫歇尔在1785年1月6日发现的。这个反射星云是天空中最大的星云之一^[4]，大小为10 × 10 弧分^[3]。它位于马头星云东北方6997436332312998583♠~15′，距离太阳 1,300 ly（400 pc）^[2]。

这个恒星形成区的星云是猎户座B分子云的一部分^[2]，或复合体猎户座分子云团（Lynds 1630）的北段。就恒星密度而言，它是嵌入该复合体的四个星团中最贫瘠的，只有21个嵌入红外源^[5]。反射星云被赫比格Ae/Be星HD 37903（英语：HD 37903）照亮，其光谱类型约为B2Ve^[5]。中心恒星周围的区域正在近红外范围内辐射萤光分子氢发射^[6]^[7]。已经从星云的尘埃中探测到多环芳香烃的红外发射^[8]。

图集[编辑]

由VLT的FORS拍摄的NGC 2023。
哈伯太空望远镜的先进巡天照相机拍摄NGC 2023的南部细节。

参考资料[编辑]

^ ^1.0 ^1.1 ^1.2 [
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+2023
NGC 2023] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. [2020-08-28].
^ ^2.0 ^2.1 ^2.2 López-García, M. A.; et al. A comprehensive study of NGC 2023 with XMM-Newton and Spitzer. Monthly Notices of the Royal Astronomical Society. February 2013, 429 (1): 775–791. Bibcode:2013MNRAS.429..775L. arXiv:1211.2935 . doi:10.1093/mnras/sts373.
^ ^3.0 ^3.1 ^3.2 ^3.3 Seligman, Courtney. NGC Objects: NGC 2000 - 2049. cseligman.com. [2020-08-28]. （原始内容存档于2018-10-16）.
^ ESO's Very Large Telescope Snaps Beautiful Image of Reflection Nebula. Sci–News. May 14, 2019 [2020-08-28]. （原始内容存档于2020-09-23）.
^ ^5.0 ^5.1 Mookerjea, B.; et al. Young stars and protostellar cores near NGC 2023. Astronomy and Astrophysics. December 2009, 507 (3): 1485–1502. Bibcode:2009A&A...507.1485M. S2CID 10603379. arXiv:0909.2614 . doi:10.1051/0004-6361/200912550.
^ Burton, Michael G.; et al. Near-IR Fluorescent Molecular Hydrogen Emission from NGC 2023. Publications of the Astronomical Society of Australia. 1998, 15 (2): 194–201. Bibcode:1998PASA...15..194B. doi:10.1071/AS98194 .
^ Rouan, D.; et al. The power of adaptive optics: a close look at a molecular cloud in NGC 2023. Monthly Notices of the Royal Astronomical Society. January 1997, 284 (2): 395–400. Bibcode:1997MNRAS.284..395R. doi:10.1093/mnras/284.2.395 .
^ Peeters, Els; et al. The PAH Emission Characteristics of the Reflection Nebula NGC 2023. The Astrophysical Journal. February 2017, 836 (2): 40. Bibcode:2017ApJ...836..198P. S2CID 119211134. arXiv:1701.06585 . doi:10.3847/1538-4357/836/2/198. 198.

外部链接[编辑]

Sunset glow in Orion. Hubble Space Telescope. NASA. 25 July 2011 [2023-03-05]. （原始内容存档于2018-12-11）.
VizieR – NGC 2023 （页面存档备份，存于互联网档案馆）
NED – NGC 2023
WikiSky上关于NGC 2023的内容：DSS2, SDSS, GALEX, IRAS, 氢α, X射线, 天文照片, 天图, 文章和图片

天文学目录
NGC天体表：	NGC 2021 - NGC 2022 - NGC 2023 - NGC 2024 - NGC 2025

天球赤道座标： 05^h 41^m 37.9^s，−02° 15′ 52″

[simbad-1] 1.0 ^1.1 ^1.2 [
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+2023
NGC 2023] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. [2020-08-28].

[López-García2013-2] 2.0 ^2.1 ^2.2 López-García, M. A.; et al. A comprehensive study of NGC 2023 with XMM-Newton and Spitzer. Monthly Notices of the Royal Astronomical Society. February 2013, 429 (1): 775–791. Bibcode:2013MNRAS.429..775L. arXiv:1211.2935 . doi:10.1093/mnras/sts373.

[ngc-3] 3.0 ^3.1 ^3.2 ^3.3 Seligman, Courtney. NGC Objects: NGC 2000 - 2049. cseligman.com. [2020-08-28]. （原始内容存档于2018-10-16）.

[scinews2019-4] ESO's Very Large Telescope Snaps Beautiful Image of Reflection Nebula. Sci–News. May 14, 2019 [2020-08-28]. （原始内容存档于2020-09-23）.

[Mookerjea2009-5] 5.0 ^5.1 Mookerjea, B.; et al. Young stars and protostellar cores near NGC 2023. Astronomy and Astrophysics. December 2009, 507 (3): 1485–1502. Bibcode:2009A&A...507.1485M. S2CID 10603379. arXiv:0909.2614 . doi:10.1051/0004-6361/200912550.

[1998Burton-6] Burton, Michael G.; et al. Near-IR Fluorescent Molecular Hydrogen Emission from NGC 2023. Publications of the Astronomical Society of Australia. 1998, 15 (2): 194–201. Bibcode:1998PASA...15..194B. doi:10.1071/AS98194 .

[Rouan1997-7] Rouan, D.; et al. The power of adaptive optics: a close look at a molecular cloud in NGC 2023. Monthly Notices of the Royal Astronomical Society. January 1997, 284 (2): 395–400. Bibcode:1997MNRAS.284..395R. doi:10.1093/mnras/284.2.395 .

[Peeters2017-8] Peeters, Els; et al. The PAH Emission Characteristics of the Reflection Nebula NGC 2023. The Astrophysical Journal. February 2017, 836 (2): 40. Bibcode:2017ApJ...836..198P. S2CID 119211134. arXiv:1701.06585 . doi:10.3847/1538-4357/836/2/198. 198.

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