---
_id: '13464'
abstract:
- lang: eng
  text: Massive binaries that merge as compact objects are the progenitors of gravitational-wave
    sources. Most of these binaries experience one or more phases of mass transfer,
    during which one of the stars loses all or part of its outer envelope and becomes
    a stripped-envelope star. The evolution of the size of these stripped stars is
    crucial in determining whether they experience further interactions and understanding
    their ultimate fate. We present new calculations of stripped-envelope stars based
    on binary evolution models computed with MESA. We use these to investigate their
    radius evolution as a function of mass and metallicity. We further discuss their
    pre-supernova observable characteristics and potential consequences of their evolution
    on the properties of supernovae from stripped stars. At high metallicity, we find
    that practically all of the hydrogen-rich envelope is removed, which is in agreement
    with earlier findings. Only progenitors with initial masses below 10 M⊙ expand
    to large radii (up to 100 R⊙), while more massive progenitors remain compact.
    At low metallicity, a substantial amount of hydrogen remains and the progenitors
    can, in principle, expand to giant sizes (> 400 R⊙) for all masses we consider.
    This implies that they can fill their Roche lobe anew. We show that the prescriptions
    commonly used in population synthesis models underestimate the stellar radii by
    up to two orders of magnitude. We expect that this has consequences for the predictions
    for gravitational-wave sources from double neutron star mergers, particularly
    with regard to their metallicity dependence.
article_number: A6
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: E.
  full_name: Laplace, E.
  last_name: Laplace
- 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: S. E.
  full_name: de Mink, S. E.
  last_name: de Mink
- first_name: S.
  full_name: Justham, S.
  last_name: Justham
- first_name: R.
  full_name: Farmer, R.
  last_name: Farmer
citation:
  ama: 'Laplace E, Götberg YLL, de Mink SE, Justham S, Farmer R. The expansion of
    stripped-envelope stars: Consequences for supernovae and gravitational-wave progenitors.
    <i>Astronomy &#38; Astrophysics</i>. 2020;637. doi:<a href="https://doi.org/10.1051/0004-6361/201937300">10.1051/0004-6361/201937300</a>'
  apa: 'Laplace, E., Götberg, Y. L. L., de Mink, S. E., Justham, S., &#38; Farmer,
    R. (2020). The expansion of stripped-envelope stars: Consequences for supernovae
    and gravitational-wave progenitors. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences.
    <a href="https://doi.org/10.1051/0004-6361/201937300">https://doi.org/10.1051/0004-6361/201937300</a>'
  chicago: 'Laplace, E., Ylva Louise Linsdotter Götberg, S. E. de Mink, S. Justham,
    and R. Farmer. “The Expansion of Stripped-Envelope Stars: Consequences for Supernovae
    and Gravitational-Wave Progenitors.” <i>Astronomy &#38; Astrophysics</i>. EDP
    Sciences, 2020. <a href="https://doi.org/10.1051/0004-6361/201937300">https://doi.org/10.1051/0004-6361/201937300</a>.'
  ieee: 'E. Laplace, Y. L. L. Götberg, S. E. de Mink, S. Justham, and R. Farmer, “The
    expansion of stripped-envelope stars: Consequences for supernovae and gravitational-wave
    progenitors,” <i>Astronomy &#38; Astrophysics</i>, vol. 637. EDP Sciences, 2020.'
  ista: 'Laplace E, Götberg YLL, de Mink SE, Justham S, Farmer R. 2020. The expansion
    of stripped-envelope stars: Consequences for supernovae and gravitational-wave
    progenitors. Astronomy &#38; Astrophysics. 637, A6.'
  mla: 'Laplace, E., et al. “The Expansion of Stripped-Envelope Stars: Consequences
    for Supernovae and Gravitational-Wave Progenitors.” <i>Astronomy &#38; Astrophysics</i>,
    vol. 637, A6, EDP Sciences, 2020, doi:<a href="https://doi.org/10.1051/0004-6361/201937300">10.1051/0004-6361/201937300</a>.'
  short: E. Laplace, Y.L.L. Götberg, S.E. de Mink, S. Justham, R. Farmer, Astronomy
    &#38; Astrophysics 637 (2020).
date_created: 2023-08-03T10:13:10Z
date_published: 2020-05-01T00:00:00Z
date_updated: 2023-08-09T12:56:32Z
day: '01'
doi: 10.1051/0004-6361/201937300
extern: '1'
external_id:
  arxiv:
  - '2003.01120'
intvolume: '       637'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1051/0004-6361/201937300
month: '05'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
  eissn:
  - 1432-0746
  issn:
  - 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The expansion of stripped-envelope stars: Consequences for supernovae and
  gravitational-wave progenitors'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 637
year: '2020'
...