---
_id: '11584'
abstract:
- lang: eng
  text: Observations show that star-forming galaxies reside on a tight 3D plane between
    mass, gas-phase metallicity, and star formation rate (SFR), which can be explained
    by the interplay between metal-poor gas inflows, SFR and outflows. However, different
    metals are released on different time-scales, which may affect the slope of this
    relation. Here, we use central, star-forming galaxies with Mstar = 109.0–10.5
    M⊙ from the EAGLE hydrodynamical simulation to examine 3D relations between mass,
    SFR, and chemical enrichment using absolute and relative C, N, O, and Fe abundances.
    We show that the scatter is smaller when gas-phase α-enhancement is used rather
    than metallicity. A similar plane also exists for stellar α-enhancement, implying
    that present-day specific SFRs are correlated with long time-scale star formation
    histories. Between z = 0 and 1, the α-enhancement plane is even more insensitive
    to redshift than the plane using metallicity. However, it evolves at z > 1 due
    to lagging iron yields. At fixed mass, galaxies with higher SFRs have star formation
    histories shifted towards late times, are more α-enhanced, and this α-enhancement
    increases with redshift as observed. These findings suggest that relations between
    physical properties inferred from observations may be affected by systematic variations
    in α-enhancements.
acknowledgement: We thank the anonymous referee for their constructive comments. JM
  acknowledges the support of a Huygens PhD fellowship from Leiden University. We
  thank Jarle Brinchmann, Rob Crain and David Sobral for discussions. We acknowledge
  the use of the TOPCAT software (Taylor 2013) for assisting in rapid exploration
  of multidimensional data sets and the use of PYTHON and its NUMPY, MATPLOTLIB, and
  PANDAS packages.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Joop
  full_name: Schaye, Joop
  last_name: Schaye
citation:
  ama: 'Matthee JJ, Schaye J. Star-forming galaxies are predicted to lie on a fundamental
    plane of mass, star formation rate, and α-enhancement. <i>Monthly Notices of the
    Royal Astronomical Society: Letters</i>. 2018;479(1):L34-L39. doi:<a href="https://doi.org/10.1093/mnrasl/sly093">10.1093/mnrasl/sly093</a>'
  apa: 'Matthee, J. J., &#38; Schaye, J. (2018). Star-forming galaxies are predicted
    to lie on a fundamental plane of mass, star formation rate, and α-enhancement.
    <i>Monthly Notices of the Royal Astronomical Society: Letters</i>. Oxford University
    Press. <a href="https://doi.org/10.1093/mnrasl/sly093">https://doi.org/10.1093/mnrasl/sly093</a>'
  chicago: 'Matthee, Jorryt J, and Joop Schaye. “Star-Forming Galaxies Are Predicted
    to Lie on a Fundamental Plane of Mass, Star Formation Rate, and α-Enhancement.”
    <i>Monthly Notices of the Royal Astronomical Society: Letters</i>. Oxford University
    Press, 2018. <a href="https://doi.org/10.1093/mnrasl/sly093">https://doi.org/10.1093/mnrasl/sly093</a>.'
  ieee: 'J. J. Matthee and J. Schaye, “Star-forming galaxies are predicted to lie
    on a fundamental plane of mass, star formation rate, and α-enhancement,” <i>Monthly
    Notices of the Royal Astronomical Society: Letters</i>, vol. 479, no. 1. Oxford
    University Press, pp. L34–L39, 2018.'
  ista: 'Matthee JJ, Schaye J. 2018. Star-forming galaxies are predicted to lie on
    a fundamental plane of mass, star formation rate, and α-enhancement. Monthly Notices
    of the Royal Astronomical Society: Letters. 479(1), L34–L39.'
  mla: 'Matthee, Jorryt J., and Joop Schaye. “Star-Forming Galaxies Are Predicted
    to Lie on a Fundamental Plane of Mass, Star Formation Rate, and α-Enhancement.”
    <i>Monthly Notices of the Royal Astronomical Society: Letters</i>, vol. 479, no.
    1, Oxford University Press, 2018, pp. L34–39, doi:<a href="https://doi.org/10.1093/mnrasl/sly093">10.1093/mnrasl/sly093</a>.'
  short: 'J.J. Matthee, J. Schaye, Monthly Notices of the Royal Astronomical Society:
    Letters 479 (2018) L34–L39.'
date_created: 2022-07-14T12:49:47Z
date_published: 2018-09-01T00:00:00Z
date_updated: 2022-08-19T08:35:45Z
day: '01'
doi: 10.1093/mnrasl/sly093
extern: '1'
external_id:
  arxiv:
  - '1802.06786'
intvolume: '       479'
issue: '1'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: abundances'
- 'galaxies: evolution'
- 'galaxies: formation'
- 'galaxies: star formation'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1802.06786
month: '09'
oa: 1
oa_version: Preprint
page: L34 - L39
publication: 'Monthly Notices of the Royal Astronomical Society: Letters'
publication_identifier:
  eissn:
  - 1745-3933
  issn:
  - 1745-3925
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Star-forming galaxies are predicted to lie on a fundamental plane of mass,
  star formation rate, and α-enhancement
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 479
year: '2018'
...