---
_id: '15085'
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.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: M. R.
  full_name: Drout, M. R.
  last_name: Drout
- first_name: Ylva Louise Linsdotter
  full_name: Götberg, Ylva Louise Linsdotter
  id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
  last_name: Götberg
  orcid: 0000-0002-6960-6911
- first_name: B. A.
  full_name: Ludwig, B. A.
  last_name: Ludwig
- first_name: J. H.
  full_name: Groh, J. H.
  last_name: Groh
- first_name: S. E.
  full_name: de Mink, S. E.
  last_name: de Mink
- first_name: A. J. G.
  full_name: O’Grady, A. J. G.
  last_name: O’Grady
- first_name: N.
  full_name: Smith, N.
  last_name: Smith
citation:
  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>
  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>
  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>.
  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.
  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.
  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>.
  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.
date_created: 2024-03-05T09:40:28Z
date_published: 2023-12-14T00:00:00Z
date_updated: 2024-10-14T12:32:01Z
day: '14'
doi: 10.1126/science.ade4970
extern: '1'
external_id:
  arxiv:
  - '2307.00061'
  pmid:
  - '38096420'
intvolume: '       382'
issue: '6676'
keyword:
- Stellar Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2307.00061
month: '12'
oa: 1
oa_version: None
page: 1287-1291
pmid: 1
publication: Science
publication_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
related_material:
  link:
  - description: News on ISTA Website
    relation: press_release
    url: https://ista.ac.at/en/news/reaching-for-the-invisible-stars/
scopus_import: '1'
status: public
title: An observed population of intermediate-mass helium stars that have been stripped
  in binaries
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 382
year: '2023'
...