... The disk, which is inferred from the shape of the bipolar reflectionnebula at the optical and near-infrared wavelengths, may be very small, less than a few arcsec, in size. ...
... Spectra from 1 to 2.5 m, at 230-430 spectral resolution, are presented of the fluorescent molecular hydrogen line emission from two locations in the reflectionnebula NGCб 2023. ...
... The faint blue nebulosity is a reflectionnebula and suggests that the cluster formed only recently as it has not yet been totally blown away by the UV radiation from the hot, blue stars. ...
... Figure 7 is a map of the H2 S (1) 10 / H2 S (1) 21 intensity ratio in the reflectionnebula Parsamyan 18, obtained from scans of the 2 · 12 and 2 · 25 µm lines with UNSWIRF (Ryder et al. ...
... reflection shells Within 2 " jet-like structures, rays, small nearly spherical shells or arcs Evidence for high mass loss ejections in the past few hundred years 1" = 5300 AU OH maser emission peculiar, varying intensity, distributed 1.3 1.5" from ...
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Ссылки http://www.atnf.csiro.au/research/masermeeting/web_papers/503_RHumphreys.pdf -- 697.0 Кб -- 09.04.2007 Похожие документы
... density and chemical composition of the nebula are similar to those of normal H ii ... CO obser vations, indicating that the nebula is associated with a molecular cloud ...
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Ссылки http://www.atnf.csiro.au/people/Angel.Lopez-Sanchez/papers/ELMLSCGR04.pdf -- 199.8 Кб -- 02.02.2008 Похожие документы