... factors that affect camera sensitivity such as moonlight, cloud cover, and so on ... b oth on the atomic and the molecular level, by the constituent elements of the ... It can b e observed that the meteoroid cloud is dense and compact during the 1s t ...
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... Visible spectra of HdCs are replete with strong molecular lines that have proven a deterrent to quantitative analysis. ... considerably over a few months before the photosphere was obscured by a thick cloud of dust (Asplund et al. 1997b, 1998, 1999 ...
... than normal stars which app ears in the sp ectrum as very strong molecular bands (C2 ... Emission nebulae are clouds of high temp erature gas. ... The atoms in the cloud are ionised by ultraviolet light from a nearby star and emit ...
... than normal stars which app ears in the sp ectrum as very strong molecular bands (C2 ... Emission nebulae are clouds of high temp erature gas. ... The atoms in the cloud are ionised by ultraviolet light from a nearby star and emit ...