Matches in SemOpenAlex for { <https://semopenalex.org/work/W2899328525> ?p ?o ?g. }
- W2899328525 abstract "We present the first results of a project aimed at searching for gas accretion events and interactions between late-type galaxies in the void environment. The project is based on long-slit spectroscopic and scanning Fabry-Perot interferometer observations performed with the SCORPIO and SCORPIO-2 multimode instruments at the Russian 6-m telescope, as well as archival multiwavelength photometric data. In the first paper of the series we describe the project and present a sample of 18 void galaxies with oxygen abundances that fall below the reference `metallicity-luminosity' relation, or with possible signs of recent external accretion in their optical morphology. To demonstrate our approach, we considered the brightest sample galaxy NGC 428, a late-type barred spiral with several morphological peculiarities. We analysed the radial metallicity distribution, the ionized gas line-of-sight velocity and velocity dispersion maps together with WISE and SDSS images. Despite its very perturbed morphology, the velocity field of ionized gas in NGC 428 is well described by pure circular rotation in a thin flat disc with streaming motions in the central bar. We also found some local non-circular gas motions clearly related to stellar feedback processes. At the same time, we revealed a circumnuclear inclined disc in NGC 428 and a region with significant residual velocities that could be considered as a result of a recent (<0.5 Gyr) accretion event. The observed oxygen abundance gradient does not contradict this conclusion." @default.
- W2899328525 created "2018-11-09" @default.
- W2899328525 creator A5056835974 @default.
- W2899328525 creator A5061594590 @default.
- W2899328525 creator A5090343620 @default.
- W2899328525 date "2018-10-31" @default.
- W2899328525 modified "2023-09-27" @default.
- W2899328525 title "Search for gas accretion imprints in voids – I. Sample selection and results for NGC 428" @default.
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- W2899328525 doi "https://doi.org/10.1093/mnras/sty2941" @default.
- W2899328525 hasPublicationYear "2018" @default.
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