English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/150369
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

No direct coupling between bending of galaxy disc stellar age and light profiles

AuthorsRuiz-Lara, T.; Sanchez-Menguiano, L.; García-Benito, Rubén ; González Delgado, Rosa M. ; Kehrig, C. ; Zibetti, S.
Issue Date2016
CitationMonthly Notices of the Royal Astronomical Society: Letters 456: L35- L39 (2016)
AbstractWe study the stellar properties of 44 face-on spiral galaxies from the Calar Alto Legacy Integral Field Area survey via full spectrum fitting techniques. We compare the age profiles with the surface brightness distribution in order to highlight differences between profile types (type I, exponential profile; and II, down-bending profile). We observe an upturn ('U-shape') in the age profiles for 17 out of these 44 galaxies with reliable stellar information up to their outer parts. This 'U-shape' is not a unique feature for type II galaxies but can be observed in type I as well. These findings suggest that the mechanisms shaping the surface brightness and stellar population distributions are not directly coupled. This upturn in age is only observable in the light-weighted profiles while it flattens out in the mass-weighted profiles. Given recent results on the outer parts of nearby systems and the results presented in this Letter, one of the most plausible explanations for the age upturn is an early formation of the entire disc (~10 Gyr ago) followed by an inside-out quenching of the star formation.
Identifiersdoi: 10.1093/mnrasl/slv174
issn: 1745-3933
Appears in Collections:(IAA) Artículos
Files in This Item:
File Description SizeFormat 
IAA_2016_MNRASslv174.pdf545,52 kBAdobe PDFThumbnail
Show full item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.