Spectroscopic Observations of d Sco Through the 2011 Periastron Passage
Spectroscopic Observations of d Sco Through the 2011 Periastron Passage
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2011 年近星体通道 d Sco 的光谱观测
DOI：
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发表时间：
2012
期刊：
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通讯作者：
N. Manset
中科院分区：
文献类型：
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作者：
T. Rivinius;S. vStefl;D. Baade;A. Carciofi;S. Otero;A. Miroshnichenko;N. Manset
我们介绍了2011年协调光谱运动的初步结果，该运动集中在7月份的d Sco近星通道上。数据主要是通过La Silla的FEROS/2.2m和Mauna Kea的ESPaDOnS/CFHT梯级仪器获得的。主要结果包括造父变星主脉动模式不存在潮汐引起的扰动，以及在星周固有时间不存在潮汐引发的物质抛射。观测到的（到目前为止还在分析的）变化与圆盘的图像是一致的，圆盘的外半径受到干扰，干扰在近日点之后向内传播。
We present prelimiary results from a coordinated spectroscopic campaign in 2011, centered on the d Sco periastron passage in July. Data have mostly been obtained with the FEROS/2.2m at La Silla and ESPaDOnS/CFHT at Mauna Kea echelle instruments. Main results include the absence of tidally induced disturbance to the main s Cephei pulsation mode and the absence of tidally triggered mass-ejection at time of periastron proper. The observed (as far as yet analyzed) variations are compatible with the picture of a disk that is disturbed on its outer radius, with the disturbance propagating inwards after the periastron.