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.

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Work Title MOBSTER - IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates
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Open Access
Creators
  1. A David-Uraz
  2. M E Shultz
  3. V Petit
  4. D M Bowman
  5. C Erba
  6. R A Fine
  7. C Neiner
  8. H Pablo
  9. J Sikora
  10. A ud-Doula
  11. G A Wade
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Oxford University Press (OUP)
Publication Date April 1, 2021
Publisher Identifier (DOI)
  1. 10.1093/mnras/stab899
Source
  1. Monthly Notices of the Royal Astronomical Society
Deposited September 09, 2021

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  • Created
  • Added Arxiv_Mobster4-1.pdf
  • Added Creator A David-Uraz
  • Added Creator M E Shultz
  • Added Creator V Petit
  • Added Creator D M Bowman
  • Added Creator C Erba
  • Added Creator R A Fine
  • Added Creator C Neiner
  • Added Creator H Pablo
  • Added Creator J Sikora
  • Added Creator A ud-Doula
  • Added Creator G A Wade
  • Published
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