[{"oa":1,"extern":"1","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2307.00061","open_access":"1"}],"keyword":["Stellar Astrophysics"],"issue":"6676","day":"14","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","doi":"10.1126/science.ade4970","status":"public","publication_status":"published","abstract":[{"lang":"eng","text":"The hydrogen-rich outer layers of massive stars can be removed by interactions with a binary companion. Theoretical models predict that this stripping produces a population of hot helium stars of ~2 to 8 solar masses (M☉), however, only one such system has been identified thus far. We used ultraviolet photometry to identify potential stripped helium stars then investigated 25 of them using optical spectroscopy. We identified stars with high temperatures (~60,000 to 100,000 kelvin), high surface gravities, and hydrogen-depleted surfaces; 16 stars also showed binary motion. These properties match expectations for stars with initial masses of 8 to 25 M☉ that were stripped by binary interaction. Their masses fall in the gap between subdwarf helium stars and Wolf-Rayet stars. We propose that these stars could be progenitors of stripped-envelope supernovae."}],"related_material":{"link":[{"relation":"press_release","description":"News on ISTA Website","url":"https://ista.ac.at/en/news/reaching-for-the-invisible-stars/"}]},"article_type":"original","date_created":"2024-03-05T09:40:28Z","volume":382,"oa_version":"None","pmid":1,"intvolume":"       382","external_id":{"arxiv":["2307.00061"],"pmid":["38096420"]},"scopus_import":"1","year":"2023","_id":"15085","citation":{"short":"M.R. Drout, Y.L.L. Götberg, B.A. Ludwig, J.H. Groh, S.E. de Mink, A.J.G. O’Grady, N. Smith, Science 382 (2023) 1287–1291.","apa":"Drout, M. R., Götberg, Y. L. L., Ludwig, B. A., Groh, J. H., de Mink, S. E., O’Grady, A. J. G., &#38; Smith, N. (2023). An observed population of intermediate-mass helium stars that have been stripped in binaries. <i>Science</i>. American Association for the Advancement of Science. <a href=\"https://doi.org/10.1126/science.ade4970\">https://doi.org/10.1126/science.ade4970</a>","ista":"Drout MR, Götberg YLL, Ludwig BA, Groh JH, de Mink SE, O’Grady AJG, Smith N. 2023. An observed population of intermediate-mass helium stars that have been stripped in binaries. Science. 382(6676), 1287–1291.","ama":"Drout MR, Götberg YLL, Ludwig BA, et al. An observed population of intermediate-mass helium stars that have been stripped in binaries. <i>Science</i>. 2023;382(6676):1287-1291. doi:<a href=\"https://doi.org/10.1126/science.ade4970\">10.1126/science.ade4970</a>","mla":"Drout, M. R., et al. “An Observed Population of Intermediate-Mass Helium Stars That Have Been Stripped in Binaries.” <i>Science</i>, vol. 382, no. 6676, American Association for the Advancement of Science, 2023, pp. 1287–91, doi:<a href=\"https://doi.org/10.1126/science.ade4970\">10.1126/science.ade4970</a>.","ieee":"M. R. Drout <i>et al.</i>, “An observed population of intermediate-mass helium stars that have been stripped in binaries,” <i>Science</i>, vol. 382, no. 6676. American Association for the Advancement of Science, pp. 1287–1291, 2023.","chicago":"Drout, M. R., Ylva Louise Linsdotter Götberg, B. A. Ludwig, J. H. Groh, S. E. de Mink, A. J. G. O’Grady, and N. Smith. “An Observed Population of Intermediate-Mass Helium Stars That Have Been Stripped in Binaries.” <i>Science</i>. American Association for the Advancement of Science, 2023. <a href=\"https://doi.org/10.1126/science.ade4970\">https://doi.org/10.1126/science.ade4970</a>."},"date_updated":"2024-10-14T12:32:01Z","page":"1287-1291","month":"12","language":[{"iso":"eng"}],"publisher":"American Association for the Advancement of Science","type":"journal_article","date_published":"2023-12-14T00:00:00Z","author":[{"full_name":"Drout, M. R.","last_name":"Drout","first_name":"M. R."},{"full_name":"Götberg, Ylva Louise Linsdotter","last_name":"Götberg","first_name":"Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","orcid":"0000-0002-6960-6911"},{"last_name":"Ludwig","first_name":"B. A.","full_name":"Ludwig, B. A."},{"last_name":"Groh","first_name":"J. H.","full_name":"Groh, J. H."},{"first_name":"S. E.","last_name":"de Mink","full_name":"de Mink, S. E."},{"last_name":"O’Grady","first_name":"A. J. G.","full_name":"O’Grady, A. J. G."},{"last_name":"Smith","first_name":"N.","full_name":"Smith, N."}],"title":"An observed population of intermediate-mass helium stars that have been stripped in binaries","arxiv":1,"quality_controlled":"1","publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]},"article_processing_charge":"No","publication":"Science"}]