The connection between mass, environment, and slow rotation in simulated galaxiesCitation formats

  • External authors:
  • Claudia del P. Lagos
  • Joop Schaye
  • Yannick Bahé
  • Jesse Van de Sande
  • David Barnes
  • Timothy A. Davis
  • Claudio Dalla Vecchia

Standard

The connection between mass, environment, and slow rotation in simulated galaxies. / Lagos, Claudia del P.; Schaye, Joop; Bahé, Yannick; Van de Sande, Jesse; Kay, Scott T.; Barnes, David; Davis, Timothy A.; Vecchia, Claudio Dalla.

In: Monthly Notices of the Royal Astronomical Society, Vol. 476, No. 4, 06.2018, p. 4327-4345.

Research output: Contribution to journalArticle

Harvard

Lagos, CDP, Schaye, J, Bahé, Y, Van de Sande, J, Kay, ST, Barnes, D, Davis, TA & Vecchia, CD 2018, 'The connection between mass, environment, and slow rotation in simulated galaxies', Monthly Notices of the Royal Astronomical Society, vol. 476, no. 4, pp. 4327-4345. https://doi.org/10.1093/mnras/sty489

APA

Lagos, C. D. P., Schaye, J., Bahé, Y., Van de Sande, J., Kay, S. T., Barnes, D., ... Vecchia, C. D. (2018). The connection between mass, environment, and slow rotation in simulated galaxies. Monthly Notices of the Royal Astronomical Society, 476(4), 4327-4345. https://doi.org/10.1093/mnras/sty489

Vancouver

Lagos CDP, Schaye J, Bahé Y, Van de Sande J, Kay ST, Barnes D et al. The connection between mass, environment, and slow rotation in simulated galaxies. Monthly Notices of the Royal Astronomical Society. 2018 Jun;476(4):4327-4345. https://doi.org/10.1093/mnras/sty489

Author

Lagos, Claudia del P. ; Schaye, Joop ; Bahé, Yannick ; Van de Sande, Jesse ; Kay, Scott T. ; Barnes, David ; Davis, Timothy A. ; Vecchia, Claudio Dalla. / The connection between mass, environment, and slow rotation in simulated galaxies. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 476, No. 4. pp. 4327-4345.

Bibtex

@article{369c6039ed0a4ed9b90c11472e5c66f7,
title = "The connection between mass, environment, and slow rotation in simulated galaxies",
abstract = "Recent observations from integral field spectroscopy (IFS) indicate that the fraction of galaxies that are slow rotators (SRs), FSR, depends primarily on stellar mass, with no significant dependence on environment.We investigate these trends and the formation paths of SRs using the EAGLE and HYDRANGEA hydrodynamical simulations. EAGLE consists of several cosmological boxes of volumes up to (100 Mpc)3, while HYDRANGEA consists of 24 cosmological simulations of galaxy clusters and their environment. Together they provide a statistically significant sample in the stellar mass range 109.5-1012.3M⊙, of 16 358 galaxies. We construct IFS-like cubes and measure stellar spin parameters, λR, and ellipticities, allowing us to classify galaxies into slow/fast rotators as in observations. The simulations display a primary dependence of FSR on stellar mass, with a weak dependence on environment. At fixed stellar mass, satellite galaxies are more likely to be SRs than centrals. FSR shows a dependence on halo mass at fixed stellar mass for central galaxies, while no such trend is seen for satellites. We find that ≈70 per cent of SRs at z = 0 have experienced at least one merger with mass ratio ≥0.1, with dry mergers being at least twice more common than wet mergers. Individual dry mergers tend to decrease λR, while wet mergers mostly increase it. However, 30 per cent of SRs at z = 0 have not experienced mergers, and those inhabit haloes with median spins twice smaller than the haloes hosting the rest of the SRs. Thus, although the formation paths of SRs can be varied, dry mergers and/or haloes with small spins dominate.",
keywords = "Galaxies: evolution, Galaxies: formation, Galaxies: kinematics and dynamics, Galaxies: structure",
author = "Lagos, {Claudia del P.} and Joop Schaye and Yannick Bah{\'e} and {Van de Sande}, Jesse and Kay, {Scott T.} and David Barnes and Davis, {Timothy A.} and Vecchia, {Claudio Dalla}",
year = "2018",
month = "6",
doi = "10.1093/mnras/sty489",
language = "English",
volume = "476",
pages = "4327--4345",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "1365-2966",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - The connection between mass, environment, and slow rotation in simulated galaxies

AU - Lagos, Claudia del P.

AU - Schaye, Joop

AU - Bahé, Yannick

AU - Van de Sande, Jesse

AU - Kay, Scott T.

AU - Barnes, David

AU - Davis, Timothy A.

AU - Vecchia, Claudio Dalla

PY - 2018/6

Y1 - 2018/6

N2 - Recent observations from integral field spectroscopy (IFS) indicate that the fraction of galaxies that are slow rotators (SRs), FSR, depends primarily on stellar mass, with no significant dependence on environment.We investigate these trends and the formation paths of SRs using the EAGLE and HYDRANGEA hydrodynamical simulations. EAGLE consists of several cosmological boxes of volumes up to (100 Mpc)3, while HYDRANGEA consists of 24 cosmological simulations of galaxy clusters and their environment. Together they provide a statistically significant sample in the stellar mass range 109.5-1012.3M⊙, of 16 358 galaxies. We construct IFS-like cubes and measure stellar spin parameters, λR, and ellipticities, allowing us to classify galaxies into slow/fast rotators as in observations. The simulations display a primary dependence of FSR on stellar mass, with a weak dependence on environment. At fixed stellar mass, satellite galaxies are more likely to be SRs than centrals. FSR shows a dependence on halo mass at fixed stellar mass for central galaxies, while no such trend is seen for satellites. We find that ≈70 per cent of SRs at z = 0 have experienced at least one merger with mass ratio ≥0.1, with dry mergers being at least twice more common than wet mergers. Individual dry mergers tend to decrease λR, while wet mergers mostly increase it. However, 30 per cent of SRs at z = 0 have not experienced mergers, and those inhabit haloes with median spins twice smaller than the haloes hosting the rest of the SRs. Thus, although the formation paths of SRs can be varied, dry mergers and/or haloes with small spins dominate.

AB - Recent observations from integral field spectroscopy (IFS) indicate that the fraction of galaxies that are slow rotators (SRs), FSR, depends primarily on stellar mass, with no significant dependence on environment.We investigate these trends and the formation paths of SRs using the EAGLE and HYDRANGEA hydrodynamical simulations. EAGLE consists of several cosmological boxes of volumes up to (100 Mpc)3, while HYDRANGEA consists of 24 cosmological simulations of galaxy clusters and their environment. Together they provide a statistically significant sample in the stellar mass range 109.5-1012.3M⊙, of 16 358 galaxies. We construct IFS-like cubes and measure stellar spin parameters, λR, and ellipticities, allowing us to classify galaxies into slow/fast rotators as in observations. The simulations display a primary dependence of FSR on stellar mass, with a weak dependence on environment. At fixed stellar mass, satellite galaxies are more likely to be SRs than centrals. FSR shows a dependence on halo mass at fixed stellar mass for central galaxies, while no such trend is seen for satellites. We find that ≈70 per cent of SRs at z = 0 have experienced at least one merger with mass ratio ≥0.1, with dry mergers being at least twice more common than wet mergers. Individual dry mergers tend to decrease λR, while wet mergers mostly increase it. However, 30 per cent of SRs at z = 0 have not experienced mergers, and those inhabit haloes with median spins twice smaller than the haloes hosting the rest of the SRs. Thus, although the formation paths of SRs can be varied, dry mergers and/or haloes with small spins dominate.

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Galaxies: kinematics and dynamics

KW - Galaxies: structure

UR - http://www.scopus.com/inward/record.url?scp=85045443376&partnerID=8YFLogxK

U2 - 10.1093/mnras/sty489

DO - 10.1093/mnras/sty489

M3 - Article

VL - 476

SP - 4327

EP - 4345

JO - Royal Astronomical Society. Monthly Notices

T2 - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 1365-2966

IS - 4

ER -