Cited by 165Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studiesAstrophysics and Star Formation Studies

Galaxy And Mass Assembly (GAMA): galaxy close pairs, mergers and the future fate of stellar mass

Open access
Robotham, A. S. G., Driver, S. P., Davies, L. J. M., Hopkins, A. M., Baldry, I. K., Agius, N. K., Bauer, A. E., Bland-Hawthorn, J. +23 more·2014·Monthly Notices of the Royal Astronomical Society

Abstract

We use a highly complete subset of the Galaxy And Mass Assembly II (GAMA-II) redshift sample to fully describe the stellar mass dependence of close pairs and mergers between 108 and 1012 M⊙. Using the analytic form of this fit we investigate the total stellar mass accreting on to more massive galaxies across all mass ratios. Depending on how conservatively we select our robust merging systems, the fraction of mass merging on to more massive companions is 2.0–5.6 per cent. Using the GAMA-II data we see no significant evidence for a change in the close pair fraction between redshift z = 0.05 and 0.2. However, we find a systematically higher fraction of galaxies in similar mass close pairs compared to published results over a similar redshift baseline. Using a compendium of data and the function γM = A(1 + z)m to predict the major close pair fraction, we find fitting parameters of A = 0.021 ± 0.001 and m = 1.53 ± 0.08, which represents a higher low-redshift normalization and shallower power-law slope than recent literature values. We find that the relative importance of in situ star formation versus galaxy merging is inversely correlated, with star formation dominating the addition of stellar material below |$\mathcal {M}^*$| and merger accretion events dominating beyond |$\mathcal {M}^*$|⁠. We find mergers have a measurable impact on the whole extent of the galaxy stellar mass function (GSMF), manifest as a deepening of the ‘dip’ in the GSMF over the next ∼Gyr and an increase in |$\mathcal {M}^*$| by as much as 0.01–0.05 dex.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1093/mnras/stu1604

Cites

93 of 93 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Binney J., Tremaine S., 1987, Galactic Dynamics. Princeton Univ. Press, Princeton, NJ

Cited by

Sorted by citations

Authors
Robotham, A. S. G., Driver, S. P., Davies, L. J. M., Hopkins, A. M., Baldry, I. K., Agius, N. K., Bauer, A. E., Bland-Hawthorn, J., Brough, S., Brown, M. J. I., Cluver, M., De Propris, R., Drinkwater, M. J., Holwerda, B. W., Kelvin, L. S., Lara-Lopez, M. A., Liske, J., López-Sánchez, Á. R., Loveday, J., Mahajan, S., McNaught-Roberts, T., Moffett, A., Norberg, P., Obreschkow, D., Owers, M. S., Penny, S. J., Pimbblet, K., Prescott, M., Taylor, E. N., van Kampen, E., & Wilkins, S. M.
Affiliations
  • The University of Western Australia (AU)
  • University of St Andrews (GB)
  • Australian Astronomical Observatory (AU)
  • Liverpool John Moores University (GB)
  • University of Lancashire (GB)
  • Monash University (AU)
  • University of Cape Town (ZA)
  • The University of Queensland (AU)
  • Leiden University (NL)
  • Universität Innsbruck (AT)
  • European Southern Observatory (DE)
  • University of Sussex (GB)
  • Durham University (GB)
  • University of Hull (GB)
  • University of the Western Cape (ZA)
  • The University of Melbourne (AU)
Corresponding author
Robotham, A. S. G.
Venue
Monthly Notices of the Royal Astronomical Society
Published
2014-09-18
Volume
444
Issue
4
Pages
3986-4008
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
OpenAlex
W2158385037
Cited by
165
References
93
Citations by year
2026: 8 · 2025: 14 · 2024: 16 · 2023: 17 · 2022: 14 · 2021: 12 · 2020: 12 · 2019: 12 · 2018: 19 · 2017: 15 · 2016: 11 · 2015: 11 · 2014: 4
FWCI
7.37
Type
journal article
Language
en
Open access
Locations
  • Monthly Notices of the Royal Astronomical Society (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (publishedVersion, other-oa)
  • CLOK (University of Central Lancashire) (acceptedVersion)
  • Liverpool John Moores University (acceptedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Repository@Hull (Worktribe) (University of Hull) (submittedVersion, cc-by)
  • Sussex Research Online (University of Sussex) (submittedVersion)
  • ThinkIR: The University of Louisville's Institutional Repository (University of Louisville) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • St Andrews Research Repository (St Andrews Research Repository) (submittedVersion)
  • Swinburne figshare (Swinburne University of Technology) (submittedVersion)
  • UTUPub (University of Turku) (submittedVersion)
  • arXiv (Cornell University)
Funders
Science and Technology Facilities Council (ST/I000976/1, ST/I00162X/1, ST/H00131X/1, ST/F002289/1, ST/L00075X/1, ST/J001465/1, ST/F007051/1, ST/L000652/1, ST/K003577/1, ST/L005042/1, ST/I001573/1, ST/F002300/1, ST/I50563X/1, ST/H008578/1, ST/I003088/1, ST/H008519/1, ST/I001166/1, ST/J002291/1)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
Keywords
galaxy mergers, stellar mass function, major mergers, in situ star formation, galaxy evolution, redshift evolution

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review