Abstract
In this paper of the series we analyze three stars listed among stars with discrepant v sin i: HD9531 and HD31592, which also show radial velocity variations inherent to spectroscopic binaries, and HD129174 which is an Mn-type star with a possible magnetic field. In HD9531 we confirm the radial velocity derived fromthe hydrogen lines as well as fromthe Ca II line at 3933 Å as variable. The profile of the calcium line also appears variable, and with the estimated magnetic induction Be = −630 ± 1340 G, this suggests that the abundance of calcium possibly varies over the surface of the star. We identified the lines of the secondary component in the spectrum of HD31592 revealing thus it is an SB2 binary with B9.5V and A0V components. While the primary star rotates with v sin i = 50 km s−1, the secondary star is faster with v sin i = 170 km s−1. We find that only 60% of the Mn lines identified in the spectrum of HD129174 can be fitted with a unique abundance value, whereas the remaining lines are stronger or fainter. We also identified two Xe II lines at 5339.33 Å and 5419.15 Å and estimated their log g f.
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23 April 2019
The original paper can be found online at https://doi.org/10.1134/S1990341318030094. The affiliation of the J. Zverko in the original paper was erroneous and need to be corrected. The correct affiliation is:
<Superscript>1</Superscript>Tatranská Lomnica, 05960 Slovakia
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Published in Russian in Astrofizicheskii Byulleten’, 2018, Vol. 73, No. 3, pp. 373–385.
The text was submitted by the authors in English.
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Zverko, J., Iliev, I., Romanyuk, I.I. et al. Stars with Discrepant v sin i as Derived from the Ca II 3933 and Mg II 4481 Å Lines. VII. HD9531 (SB), HD31592 (SB2), HD129174 (SB?). Astrophys. Bull. 73, 351–362 (2018). https://doi.org/10.1134/S1990341318030094
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DOI: https://doi.org/10.1134/S1990341318030094