What do the dark lines on a line absorption spectrum tell us?
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| Together with a larger spectral coverage (λλ = 917-1188 A), this allows us to characterize absorption lines in the interstellar medium with unprecedented accuracy. | |
29 Citations | The presence of line self-reversal significantly amplifies the small spectral shifts between the absorption and emission lines. |
210 Citations | Most of our observed lines show complex profiles due to an interplay between emission and absorption features, and we suggest a two-dimensional classification scheme to describe these line profiles, based on the relative height of a secondary peak to the primary peak, as well as whether the absorption is blue- or red-shifted. |
97 Citations | They are responsible for the vacuum ultraviolet absorption lines found experimentally beyond the A-band spectrum at 201.1 nm (49,722 cm(-1)) and higher. |
79 Citations | The predicted positions and intensities of lines in the infrared spectrum are in good agreement with the experimental spectrum [C. E. |
15 Citations | It is thought that the spectrum may have some weak absorption line features. |
138 Citations | This is the first complete spectral line survey toward a cold, dark cloud ever made. |
19 Citations | To our knowledge, this is the first frequency measurement of saturated absorption lines in ammonia at near infrared frequencies and the first reported observation of saturated absorption lines in the ν1+2ν4 band. |
30 Citations | Based on these results, the minihalo model absorption-line signatures appear to be consistent with many current observations, given a sufficiently soft spectrum. |
44 Citations | This is because current models of the spectral lineshape in this band do not properly account for the significant absorption that exists far from the centers of saturated lines. |
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