вторник, 26 января 2010 г.

Перевод Рус-Анг Астрономия

Emission structure of the 12CO molecule is more complex. None of the 12CO lines is a simple Gaussian, and a broader emission is visible in the wings on both sides. Moreover, line profiles vary considerably in shape at differ­ent points of the ASO1 map. Fig. 4 shows two spectra ob­served in the Southern and Northern parts. The deviation of the profiles can be quantified by looking at the value of J Tdv on the blue - and red sides of the lines (where the "blue" and "red" are relative to the central velocity of -51,5 km/s). The observed deviations may be due to superposi­tion of separate velocity components. We can recognize four velocity ranges on the profiles where the valuej Tdv varies around the whole ASO1 object. Fig. 5 shows maps of the 12CO molecule radiation in different velocity ranges. We try to identify different velocity components of the molecular emission as those associated with outflows. The bipolar out­flows can be seen at the velocity — position plot (Fig. 6) for 12CO and 13CO along the outflow axis with the center at RA(1950) = 00h42m05s, Dec. (1950) = 55°3l'00" (see the vertical section in Fig. 1).We can separate two bipolar out­flows originating from the common point that is coincident with the peak of the integrated emission in the line of 13CO.

We have named the two components of the bipolar out­flow the "high-velocity" and "low-velocity" lobes. The "low-velocity" lobe can be identified below 1.5 km/s with re­spect to central velocity. It is marked with "L" in Fig. 6. The "high-velocity" lobe is seen at greater than 1.5 km/s (with respect to central velocity) and has been marked in Fig. 6 as "H"

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