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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Observations of B335 in the millimeter continuum and the 226 GHz H2CO Line
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Observations of B335 in the millimeter continuum and the 226 GHz H2CO Line

机译：毫米连续体和226 GHz H2CO线中B335的观测值

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The protostar B335 was observed in the 1.3 turn continuum and in the H2CO 3(12) -> 2(11) line with an angular resolution of about 8 ''. The mass of the inner envelope, detected by the dust continuum emission, is about 0.02 MID (R). The H2CO spectrum at the protostellar position shows a blue-skewed double-peak profile, suggesting that the kinematics of the inner envelope is dominated by infall motion. When the blueshifted and the redshifted peaks were imaged separately, however, a small east-west displacement was found between the maximum positions. This displacement suggests that some part of the H2CO emission might come from the outflowing gas. A combined effect of the infalling envelope and the outflow on the radiative transfer is discussed. This effect can make the line profile asymmetry severer than what is expected from infall-only models.
机译：在1.3转连续体和H2CO 3（12）-> 2（11）线中观察到原恒星B335，其角分辨率约为8英寸。通过连续的粉尘排放检测到的内包层质量约为0.02 MID（R）。在原恒星位置的H2CO谱显示出一个偏斜的双峰轮廓，这表明内壳的运动学主要是俯冲运动。但是，当蓝移峰和红移峰分别成像时，在最大位置之间发现了一个小的东西向位移。这种位移表明，H2CO排放的一部分可能来自流出的气体。讨论了入射包膜和流出物对辐射传递的综合影响。这种影响会使线路轮廓的不对称性比仅落入式模型所预期的严重。

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