000007465 001__ 7465
000007465 005__ 20250204104828.0
000007465 0247_ $$2DOI$$a10.3847/1538-3881/ad6f06
000007465 037__ $$aSCART-2025-0096
000007465 100__ $$aPauwels, Tinne
000007465 245__ $$aLow-mass Stellar and Substellar Candidate Companions around Massive Stars in Sco OB1 and M17
000007465 260__ $$c2024
000007465 520__ $$aMassive stars are recognized for their high degree of multiplicity, yet the mass ratio regime below 0.1 remains insufficiently explored. It is therefore unknown whether extremely low-mass (possibly substellar) companions can form and survive in the direct UV-irradiated environment of massive stars. In this paper, we discuss Very Large Telescope/Spectro-Polarimetric High-contrast Exoplanet REsearch integral field spectrograph (0.″15–0.″85) observations of six massive O- and early B-type stars in Sco OB1 and M17 that each have a low-mass candidate companion (CC). Two targets have companions that are brown dwarf candidates. The other four have CCs in the low end of the stellar mass regime (≤0.30 M ⊙). For three of these, we have obtained a second epoch observation. At least two sources exhibit similar proper motion to that of their central star. However, given the expected proper motion of background objects, this does not imply certain companionship. We show how future follow-up observations of the brown dwarf CCs in the J, H, and L bands should allow for an unambiguous confirmation of their nature.
000007465 594__ $$aNO
000007465 700__ $$aReggiani, Maddalena
000007465 700__ $$aSana, Hugues
000007465 700__ $$aMahy, Laurent 
000007465 773__ $$c13$$n5$$pThe Astronomical Journal$$v168$$y2024
000007465 8560_ $$flaurent.mahy@ksb-orb.be
000007465 8564_ $$s5546109$$uhttp://publi2-as.oma.be/record/7465/files/Pauwels_ApJ_2024.pdf
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000007465 905__ $$apublished in
000007465 980__ $$aREFERD