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TOPIC: He6678 monitoring of zeta Tau

He6678 monitoring of zeta Tau 9 years 3 months ago #33

2012/13-observation of the HeI6678 radial velocity



The attached upper plot shows the observed orbital behavior of the well-known 132.9735d-period [1, 2, 3], the lower plot shows the phase characteristic.
Observer of the campaign 2012/13: C. Sawicki, St. Charbonnel, B. Mauclaire, E. Pollmann.
The determined 132.4995d-period confirms all the values of [1,2,3], inspite of the historical disk minimum during our campaign.
The relatively large RV scatter could be caused by ultra-short-term variations, due to co-rotating clouds and/or non-radial pulsations of the primary.

[1] Ruzdjak, D., et al., A&A, 506, 1319-1333, 2009
[2] Harmanec, P. ,1984, Bull. Astron. Inst. Czech., 35, 164
[3] Pollmann, E., Mauclaire, B., B├╝cke, R., IBVS 6099

Ernst Pollmann
Active Spectroscopy in Astronomy
www.astrospectroscopy.de
www.astronomie.de/astronomische-fachgebiete
Last Edit: 9 years 3 months ago by daliahmaus.
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He6678 monitoring of zeta Tau 9 years 2 months ago #34

Unfortunately the attachment is not shown.
I am asking the administration this to do.

E. P.
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He6678 monitoring of zeta Tau 9 years 1 month ago #35

Sorry for the delay.
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