We present the results of modelling the energy distribution of a power law reflected by a dusty cloud. We explore in a fully consistent manner the case in which the reflecting nebula is of considerable optical depth. We apply the model to the observations of the detached emission line cloud ...
1.21 NGC 1999 is a reflection nebula. It does not emit any visible light of its own but shines only because the light from the star just to the left of the center illuminates the nebula's dust. NG...
NGC 2170 A Reflection Nebula in the Constellation Monoceros,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工
Interstellar extinction is investigated in a 1.5 square degree area in the direction of the reflection nebula NGC 7023 at l = 104.1 deg, b = +14.2 deg. The... K Zdanavicius,J Zdanavicius,V Straizys,... - Baltic Astronomy 被引量: 73发表: 2009年 Chandra ACIS Spectroscopy of N157B...
Messier 78 - A reflection nebula in the constellation Orion,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工
Another type of diffuse nebula, a reflection nebula doesn’t emit its own light, but scatters light from embedded stars. (Image credit: NASA, JPL-Caltech, Kate Su (Steward Obs, U. Arizona) et al.) Planetary nebula: The Helix Nebula This is composed of expanding gas that was blown off...
“a nebula is a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.” Many nebulae are visible due to fluorescence caused by embedded hot stars. Other nebulae are so dispersed they can ...
that is, within the first few million years after the condensation of the first solids from the solar nebula, the calcium–aluminium-rich inclusions in chondritic meteorites (taken ast0(ref.13)). Indeed, the rapid formation of Mars, within 9 Myr oft0, is also attested to by Hf–W sys...
The Iris Nebula is a bright reflection nebula in the constellation Cepheus. It lies 1 300 light-years away and is six light-years across.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后
NebulaBootstrap bin server bin location。 build build path,created by deploy.sh, if you do not need to build again, just delete it.(optional)。 conf configuration path. data application data path. e.g.Nebiowhich is a data collect and real-time analysis application, write it's data to ...