MOBSTER - IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates
<jats:title>ABSTRACT/jats:title <jats:p>In this paper, we present results from the spectropolarimetric follow-up of photometrically selected candidate magnetic B stars from the MOBSTER (Magnetic OB[A] Stars with TESS: probing their Evolutionary and Rotational properties) project. Out of four observed targets, one (HD 38170) is found to host a detectable surface magnetic field, with a maximum longitudinal field measurement of 105 ± 14 G. This star is chemically peculiar and classified as an α2 CVn variable. Its detection validates the use of the Transiting Exoplanet Survey Satellite (TESS) to perform a photometric selection of magnetic candidates. Furthermore, upper limits on the strength of a putative dipolar magnetic field are derived for the remaining three stars, and we report the discovery of a previously unknown spectroscopic binary system, HD 25709. Finally, we use our non-detections as case studies to further inform the criteria to be used for the selection of a larger sample of stars to be followed up using high-resolution spectropolarimetry./jats:p
This is a pre-copyedited, author-produced PDF of an article accepted for publication in 'Monthly Notices of the Royal Astronomical Society' following peer review. The version of record [David-Uraz, A., Shultz, M.E., Petit, V., Bowman, D.M., Erba, C., Fine, R.A., Neiner, C., Pablo, H., Sikora, J., ud-Doula, A., et al. (2021). MOBSTER – IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates★. Monthly Notices of the Royal Astronomical Society 504, 4841–4849.] is available online at: https://doi.org/10.1093/mnras/stab899.
|Work Title||MOBSTER - IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates|
|License||In Copyright (Rights Reserved)|
|Publication Date||April 1, 2021|
|Publisher Identifier (DOI)||
|Deposited||September 09, 2021|
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