@article{0f4bdda95c084030b91cb053e4239a48,
title = "MOBSTER - IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates",
abstract = "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.",
author = "A. David-Uraz and Shultz, {M. E.} and V. Petit and Bowman, {D. M.} and C. Erba and Fine, {R. A.} and C. Neiner and H. Pablo and J. Sikora and A. Ud-Doula and Wade, {G. A.}",
note = "Funding Information: This paper includes data collected by the TESS mission. Funding for the TESS mission is provided by the NASA Explorer Program. Funding for the TESS Asteroseismic Science Operations Centre is provided by the Danish National Research Foundation (grant agreement no.: DNRF106), ESA PRODEX (PEA 4000119301), and Stellar Astrophysics Centre (SAC) at Aarhus University. We thank the TESS and TASC/TASOC teams for their support for this work. This research has made use of the SIMBAD data base, operated at CDS, Strasbourg, France. Some of the data presented in this paper were obtained from the MikulskiArchive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-2655. This work has made use of the VALD data base, operated at Uppsala University, the Institute of Astronomy RAS in Moscow, and the University of Vienna. AD-U and GAW acknowledge the support of the Natural Science and Engineering Research Council of Canada (NSERC). This work is supported by NASA under award number 80GSFC17M0002. MES acknowledges the financial support provided by the Annie Jump Cannon Fellowship, supported by the University of Delaware and endowed by the Mount Cuba Astronomical Observatory. VP acknowledges support from the National Science Foundation under grant no. 1747658. The research leading to these results has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 Framework Programme (grant agreement no. 670519: MAMSIE), and a senior post-doctoral fellowship from the Research Foundation Flanders (FWO) with grant agreement no. 1286521N to DMB Publisher Copyright: {\textcopyright} 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",
year = "2021",
month = jul,
day = "1",
doi = "10.1093/mnras/stab899",
language = "English (US)",
volume = "504",
pages = "4841--4849",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",
}