LBV phenomenon and binarity: The environment of HR Car A. Mehner, S. Janssens, C. Agliozzo, W.-J. de Wit, H. M. J. Boffin, D. Baade, J. Bodensteiner, J. H. Groh, L. Mahy and F. P. A. Vogt A&A, 655 (2021) A33 Published online: 09 November 2021 DOI: 10.1051/0004-6361/202141473