Supernovae and their host galaxies – III. The impact of bars and bulges on the radial distribution of supernovae in disc galaxies

Hakobyan, A. A.; Karapetyan, A. G.; Barkhudaryan, L. V.; Mamon, G. A.; Kunth, D.; Петросян, А. Р.; Adibekyan, V.; Aramyan, L. S.; Turatto, M.

doi:10.1093/mnras/stv2853

Cited by 52 publications

(50 citation statements)

References 62 publications

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“…The actions of a strong bar, for example, can reduce local massive star formation (e.g. Hakobyan et al 2016a) and minor mergers or interactions can trigger considerable localised star formation (e.g. Bushouse 1987; Bastian et al 2005;Bekki 2008), significantly altering radial flux distributions.…”

Section: The Rationalementioning

confidence: 99%

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The radial distribution of supernovae compared to star formation tracers

Audcent-Ross

Meurer

Audcent

et al. 2019

Monthly Notices of the Royal Astronomical Society

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Given the limited availability of direct evidence (pre-explosion observations) for supernova (SN) progenitors, the location of supernovae (SNe) within their host galaxies can be used to set limits on one of their most fundamental characteristics, their initial progenitor mass. We present our constraints on SN progenitors derived by comparing the radial distributions of 80 SNe in the SINGG and SUNGG surveys to the R-band, Hα, and UV light distributions of the 55 host galaxies. The strong correlation of Type Ia SNe with R-band light is consistent with models containing only low mass progenitors, reflecting earlier findings. When we limit the analysis of Type II SNe to apertures containing 90 per cent of the total flux, the radial distribution of these SNe best traces far ultraviolet (FUV) emission, consistent with recent direct detections indicating Type II SNe have moderately massive red supergiant progenitors. Stripped Envelope (SE) SNe have the strongest correlation with Hα fluxes, indicative of very massive progenitors (M * 20 M ). This result contradicts a small, but growing, number of direct detections of SE SN progenitors indicating they are moderately massive binary systems. Our result is consistent, however, with a recent population analysis suggesting binary SE SN progenitor masses are regularly underestimated. SE SNe are centralised with respect to Type II SNe and there are no SE SNe recorded beyond half the maximum disc radius in the optical and one third the disc radius in the ultraviolet. The absence of SE SNe beyond these distances is consistent with reduced massive star formation efficiencies in the outskirts of the host galaxies.

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Section: The Rationalementioning

confidence: 99%

“…A1b). Strong bars are known to cause a notable suppression of massive star formation in early-type spirals (see Hakobyan et al 2016a, and references therein) and this could contribute to this CDF feature.…”

Section: Type II Snementioning

confidence: 99%

The radial distribution of supernovae compared to star formation tracers

Audcent-Ross

Meurer

Audcent

et al. 2019

Monthly Notices of the Royal Astronomical Society

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“…In principle, one would expect this number to be even larger, because bars are long-lived (Gadotti et al 2015) and it is extremely difficult to avoid bar-forming instabilities in numeri-1986; Buta & Combes 1996;Rautiainen & Salo 2000). At the same time they are believed to intensify the global cessation of star formation in late stages of galaxy evolution (Masters et al 2012;Hakobyan et al 2016;Haywood et al 2016;Khoperskov et al 2018;George et al 2019). They may play a role in feeding active galactic nuclei (AGN) by transporting gas inwards, but this is a heavily discussed subject and still somewhat inconclusive (Ho et al 1997;Coelho & Gadotti 2011;Oh et al 2012;Cheung et al 2015;Galloway et al 2015;Goulding et al 2017;Alonso et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Stellar populations across galaxy bars in the MUSE TIMER project

Neumann

Fragkoudi

Pérez

et al. 2020

A&A

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Stellar populations in barred galaxies save an imprint of the influence of the bar on the host galaxy's evolution. We present a detailed analysis of star formation histories (SFHs) and chemical enrichment of stellar populations in nine nearby barred galaxies from the TIMER project. We use integral field observations with the MUSE instrument to derive unprecedented spatially resolved maps of stellar ages, metallicities, [Mg/Fe] abundances and SFHs, as well as Hα as a tracer of ongoing star formation. We find a characteristic V-shaped signature in the SFH perpendicular to the bar major axis which supports the scenario where intermediate age stars (∼ 2-6 Gyr) are trapped on more elongated orbits shaping a thinner part of the bar, while older stars (> 8 Gyr) are trapped on less elongated orbits shaping a rounder and thicker part of the bar. We compare our data to state-of-the-art cosmological magneto-hydrodynamical simulations of barred galaxies and show that such V-shaped SFHs arise naturally due to the dynamical influence of the bar on stellar populations with different ages and kinematic properties. Additionally, we find an excess of very young stars (< 2 Gyr) on the edges of the bars, predominantly on the leading side, confirming typical star formation patterns in bars. Furthermore, mass-weighted age and metallicity gradients are slightly shallower along the bar than in the disc likely due to orbital mixing in the bar. Finally, we find that bars are mostly more metal-rich and less [Mg/Fe]-enhanced than the surrounding discs. We interpret this as a signature that the bar quenches star formation in the inner region of discs, usually referred to as star formation deserts. We discuss these results and their implications on two different scenarios of bar formation and evolution.

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“…In this case, it is difficult to precisely analyse the spatial distribution of SNe, and associate them with a concrete stellar component (bulge or thick/thin discs, old or intermediate/young) in the hosts due to different or unknown projection effects (e.g. Hakobyan et al 2016Hakobyan et al , 2017. In addition, E-S0 and spiral host galaxies have had different evolutionary paths through major/minor galaxy-galaxy interaction (e.g.…”

Section: Introductionmentioning

confidence: 99%

Supernovae and their host galaxies – VI. Normal Type Ia and 91bg-like supernovae in ellipticals

Barkhudaryan

Hakobyan

Karapetyan

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We present an analysis of the galactocentric distributions of the "normal" and peculiar "91bglike" subclasses of 109 supernovae (SNe) Ia, and study the global parameters of their elliptical hosts. The galactocentric distributions of the SN subclasses are consistent with each other, and with the radial light distribution of host stellar populations, when excluding bias against central SNe. Among the global parameters, only the distributions of u−r colours and ages are inconsistent significantly between the ellipticals of different SN Ia subclasses: the normal SN hosts are on average bluer/younger than those of 91bg-like SNe. In the colour-mass diagram, the tail of colour distribution of normal SN hosts stretches into the Green Valley -transitional state of galaxy evolution, while the same tail of 91bg-like SN hosts barely reaches that region. Therefore, the bluer/younger ellipticals might have more residual star formation that gives rise to younger "prompt" progenitors, resulting in normal SNe Ia with shorter delay times. The redder and older ellipticals that already exhausted their gas for star formation may produce significantly less normal SNe with shorter delay times, outnumbered by "delayed" 91bg-like events. The host ages (lower age limit of the delay times) of 91bg-like SNe does not extend down to the stellar ages that produce significant u-band fluxes -the 91bg-like events have no prompt progenitors. Our results favor SN Ia progenitor models such as He-ignited violent mergers that have the potential to explain the observed SN/host properties.

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Supernovae and their host galaxies – III. The impact of bars and bulges on the radial distribution of supernovae in disc galaxies

Cited by 52 publications

References 62 publications

The radial distribution of supernovae compared to star formation tracers

The radial distribution of supernovae compared to star formation tracers

Stellar populations across galaxy bars in the MUSE TIMER project

Supernovae and their host galaxies – VI. Normal Type Ia and 91bg-like supernovae in ellipticals

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