Matches in SemOpenAlex for { <https://semopenalex.org/work/W4385650261> ?p ?o ?g. }
- W4385650261 endingPage "A62" @default.
- W4385650261 startingPage "A62" @default.
- W4385650261 abstract "Context. The hierarchical model of galaxy formation suggests that galaxies are continuously growing. However, our position inside the Milky Way prevents us from studying the disk edge. Truncations are low surface brightness features located in the disk outskirts of external galaxies. They indicate where the disk brightness abruptly drops, and their location is thought to change dynamically. In previous analyses of Milky Way-like galaxies, truncations were detected up to 3 kpc above the mid-plane, but whether they remain present beyond that height remains unclear. Aims. Our goal is to determine whether truncations can be detected above 3 kpc in height in the Milky Way-like galaxy NGC 4565 and thus establish the actual disk thickness. We also aim to study how the truncation relates to disk properties such as star formation activity or the warp. Methods. We performed a vertical study of the disk of the NGC 4565 edge in unprecedented detail. We explored the truncation radius at different heights above and below the disk mid-plane (0 < z < 8 kpc) and at different wavelengths. We used new ultra-deep optical data ( μ g,lim = 30.5 mag arcsec −2 ; 3 σ within 10 × 10 arcsec 2 boxes) in the g , r , and i broadbands, along with near-ultraviolet, far-ultraviolet, H α , and H I observations. Results. We detect the truncation up to 4 kpc in the g , r , and i ultra-deep bands, which is 1 kpc higher than in any previous study for any galaxy. The radial position of the truncation remains constant up to 3 kpc, while higher up it is located at a smaller radius. This result is independent of the wavelength but is affected by the presence of the warp. Conclusions. We propose an inside-out growth scenario for the formation of the disk of NGC 4565. Our results point towards the truncation feature being linked to a star-forming threshold and to the onset of the disk warp." @default.
- W4385650261 created "2023-08-09" @default.
- W4385650261 creator A5011744592 @default.
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- W4385650261 creator A5022438083 @default.
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- W4385650261 creator A5026933127 @default.
- W4385650261 creator A5079672582 @default.
- W4385650261 creator A5084165647 @default.
- W4385650261 date "2023-10-01" @default.
- W4385650261 modified "2023-10-13" @default.
- W4385650261 title "The truncation of the disk of NGC 4565: Detected up to z=4 kpc, with star formation, and affected by the warp" @default.
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