Ernst Pollmann, (2018) Precession of the Disk in Pleione Study of the Halpha Line Profile. Information Bulletin on Variable Stars, 63 (6239). ISSN 1587-2440
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Abstract
Medium-resolution spectroscopy of the binary system Pleione (28 Tau), obtained over the time period October 2004 (JD 2453300) to March 2018 (JD 2458185) by the ARAS Spectroscopy Group, has been used to determine the central absorption depth (CA), V/R ratio, radial velocity (RV) and equivalent width of the H emission, in order to study the disk precession as a consequence of the periastron passages of the companion. We found an exact coincidence of the CA maxima with the minima of V/R and RV as a result of the disk precession. This has never before been observed during the maximum shell phase in the years around 1980, or during the initial shell phase around August/October 1974.
| Item Type: | Article |
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| Subjects: | Q Science / természettudomány > QB Astronomy, Astrophysics / csillagászat, asztrofizika |
| Depositing User: | Kotegelt Import |
| Date Deposited: | 25 Feb 2021 07:09 |
| Last Modified: | 25 Feb 2021 07:09 |
| URI: | http://real.mtak.hu/id/eprint/121627 |
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