Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29775
Titolo: | Spatially resolved signature of quenching in star-forming galaxies | Autori: | Quai, Salvatore POZZETTI, Lucia Moresco, Michele Ennio Maria Citro, Annalisa CIMATTI, ANDREA Brinchmann, Jarle Gunawardhana, Madusha L. P. Paalvast, Mieke |
Data pubblicazione: | 2019 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Abstract: | Understanding when, how, and where star formation ceased (quenching) within galaxies is still a critical subject in galaxy evolution studies. Taking advantage of the new methodology developed by Quai et al. to select recently quenched galaxies, we explored the spatial information provided by the IFU data to get critical insights on this process. In particular, we analyse 10 SDSS-IV MaNGA galaxies that show regions with low [O III]/H α compatible with a recent quenching of the star formation. We compare the properties of these 10 galaxies with those of a control sample of 8 MaNGA galaxies with ongoing star formation in the same stellar mass, redshift, and gas-phase metallicity range. The quenching regions found are located between 0.5 and 1.1 effective radii from the centre. This result is supported by the analysis of the average radial profile of the ionization parameter, which reaches a minimum at the same radii, while the one of the star-forming sample shows an almost flat trend. These quenching regions occupy a total area between ∼ 15 and 45 per cent of our galaxies. Moreover, the average radial profile of the star formation rate surface density of our sample is lower and flatter than that of the control sample, at any radii, suggesting a systematic suppression of the star formation in the inner part of our galaxies. Finally, the radial profiles of gas-phase metallicity of the two samples have a similar slope and normalization. Our results cannot be ascribed to a difference in the intrinsic properties of the analysed galaxies, suggesting a quenching scenario more complicated than a simple inside-out quenching.... | URI: | http://hdl.handle.net/20.500.12386/29775 | URL: | https://academic.oup.com/mnras/article/490/2/2347/5580617 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stz2771 | Bibcode ADS: | 2019MNRAS.490.2347Q | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
Quai_1910.01130.pdf | preprint | 10.34 MB | Adobe PDF | Visualizza/apri |
stz2771.pdf | pdf editoriale | 11.64 MB | Adobe PDF | Visualizza/apri |
29775-stz2771_P01.pdf | Miur | 8.24 MB | Adobe PDF | |
29775-stz2771_P02.pdf | Miur | 3.46 MB | Adobe PDF |
Page view(s)
50
controllato il 11-set-2024
Download(s)
26
controllato il 11-set-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.