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| Paper: |
Spectroscopic Observations of
δ Sco Through the 2011 Periastron
Passage |
| Volume: |
464, Circumstellar Dynamics at High Resolution |
| Page: |
235 |
| Authors: |
Rivinius, Th.; Štefl, S.; Baade, D.; Carciofi, A. C.; Otero, S.; Miroshnichenko, A. S.; Manset, N. |
| Abstract: |
We present prelimiary results from a coordinated spectroscopic
campaign in 2011, centered on the δ Sco periastron passage in
July. Data have mostly been obtained with the FEROS/2.2 m at La Silla and
ESPaDOnS/CFHT at Mauna Kea echelle instruments. Main results include the
absence of tidally induced disturbance to the main β 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. |
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