---
_id: '11517'
abstract:
- lang: eng
  text: To understand star formation in galaxies, we investigate the star formation
    rate (SFR) surface density (ΣSFR) profiles for galaxies, based on a well-defined
    sample of 976 star-forming MaNGA galaxies. We find that the typical ΣSFR profiles
    within 1.5Re of normal SF galaxies can be well described by an exponential function
    for different stellar mass intervals, while the sSFR profile shows positive gradients,
    especially for more massive SF galaxies. This is due to the more pronounced central
    cores or bulges rather than the onset of a `quenching' process. While galaxies
    that lie significantly above (or below) the star formation main sequence (SFMS)
    show overall an elevation (or suppression) of ΣSFR at all radii, this central
    elevation (or suppression) is more pronounced in more massive galaxies. The degree
    of central enhancement and suppression is quite symmetric, suggesting that both
    the elevation and suppression of star formation are following the same physical
    processes. Furthermore, we find that the dispersion in ΣSFR within and across
    the population is found to be tightly correlated with the inferred gas depletion
    time, whether based on the stellar surface mass density or the orbital dynamical
    time. This suggests that we are seeing the response of a simple gas-regulator
    system to variations in the accretion rate. This is explored using a heuristic
    model that can quantitatively explain the dependence of σ(ΣSFR) on gas depletion
    timescale. Variations in accretion rate are progressively more damped out in regions
    of low star-formation efficiency leading to a reduced amplitude of variations
    in star-formation.
acknowledgement: "We are grateful to the anonymous referee for their thoughtful and
  constructive review of the paper and their several suggestions (including the analysis
  of Section 3.4), which have improved the paper. This research has been supported
  by the Swiss National Science Foundation.\r\n\r\nFunding for the Sloan Digital Sky
  Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department
  of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges
  support and resources from the Center for High-Performance Computing at the University
  of Utah. The SDSS website is www.sdss.org.\r\n\r\nSDSS-IV is managed by the Astrophysical
  Research Consortium for the Participating Institutions of the SDSS Collaboration,
  including the Brazilian Participation Group, the Carnegie Institution for Science,
  Carnegie Mellon University, the Chilean Participation Group, the French Participation
  Group, Harvard-Smithsonian Center for Astrophysics, Instituto de Astrofísica de
  Canarias, the Johns Hopkins University, Kavli Institute for the Physics and Mathematics
  of the Universe (IPMU)/University of Tokyo, Lawrence Berkeley National Laboratory,
  Leibniz Institut für Astrophysik Potsdam (AIP), Max-Planck-Institut für Astronomie
  (MPIA Heidelberg), Max-Planck-Institut für Astrophysik (MPA Garching), Max-Planck-Institut
  für Extraterrestrische Physik (MPE), National Astronomical Observatory of China,
  New Mexico State University, New York University, University of Notre Dame, Observatário
  Nacional/MCTI, the Ohio State University, Pennsylvania State University, Shanghai
  Astronomical Observatory, United Kingdom Participation Group, Universidad Nacional
  Autónoma de México, University of Arizona, University of Colorado Boulder, University
  of Oxford, University of Portsmouth, University of Utah, University of Virginia,
  University of Washington, University of Wisconsin, Vanderbilt University, and Yale
  University"
article_number: '132'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Enci
  full_name: Wang, Enci
  last_name: Wang
- first_name: Simon J.
  full_name: Lilly, Simon J.
  last_name: Lilly
- first_name: Gabriele
  full_name: Pezzulli, Gabriele
  last_name: Pezzulli
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
citation:
  ama: Wang E, Lilly SJ, Pezzulli G, Matthee JJ. On the elevation and suppression
    of star formation within galaxies. <i>The Astrophysical Journal</i>. 2019;877(2).
    doi:<a href="https://doi.org/10.3847/1538-4357/ab1c5b">10.3847/1538-4357/ab1c5b</a>
  apa: Wang, E., Lilly, S. J., Pezzulli, G., &#38; Matthee, J. J. (2019). On the elevation
    and suppression of star formation within galaxies. <i>The Astrophysical Journal</i>.
    IOP Publishing. <a href="https://doi.org/10.3847/1538-4357/ab1c5b">https://doi.org/10.3847/1538-4357/ab1c5b</a>
  chicago: Wang, Enci, Simon J. Lilly, Gabriele Pezzulli, and Jorryt J Matthee. “On
    the Elevation and Suppression of Star Formation within Galaxies.” <i>The Astrophysical
    Journal</i>. IOP Publishing, 2019. <a href="https://doi.org/10.3847/1538-4357/ab1c5b">https://doi.org/10.3847/1538-4357/ab1c5b</a>.
  ieee: E. Wang, S. J. Lilly, G. Pezzulli, and J. J. Matthee, “On the elevation and
    suppression of star formation within galaxies,” <i>The Astrophysical Journal</i>,
    vol. 877, no. 2. IOP Publishing, 2019.
  ista: Wang E, Lilly SJ, Pezzulli G, Matthee JJ. 2019. On the elevation and suppression
    of star formation within galaxies. The Astrophysical Journal. 877(2), 132.
  mla: Wang, Enci, et al. “On the Elevation and Suppression of Star Formation within
    Galaxies.” <i>The Astrophysical Journal</i>, vol. 877, no. 2, 132, IOP Publishing,
    2019, doi:<a href="https://doi.org/10.3847/1538-4357/ab1c5b">10.3847/1538-4357/ab1c5b</a>.
  short: E. Wang, S.J. Lilly, G. Pezzulli, J.J. Matthee, The Astrophysical Journal
    877 (2019).
date_created: 2022-07-07T08:38:24Z
date_published: 2019-06-04T00:00:00Z
date_updated: 2022-08-18T10:19:08Z
day: '04'
doi: 10.3847/1538-4357/ab1c5b
extern: '1'
external_id:
  arxiv:
  - '1901.10276'
intvolume: '       877'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1901.10276
month: '06'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the elevation and suppression of star formation within galaxies
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 877
year: '2019'
...