التفاصيل البيبلوغرافية
| العنوان: |
The first 62 AGN observed with SDSS-IV MaNGA - II: resolved stellar populations |
| المؤلفون: |
Alice Deconto Machado, Rogério Riffel, Rogemar A. Riffel, Sandro Barboza Rembold, Nícolas Dullius Mallmann, Vladimir Avila-Reese, Janaina Correa do Nascimento, Rafael Fernando Cirolini, J. S. Schimoia, Sebastián F. Sánchez, Luiz N. da Costa, Thaisa Storchi-Bergmann, Gabriele da Silva Ilha |
| بيانات النشر: |
arXiv, 2018. |
| سنة النشر: |
2018 |
| مصطلحات موضوعية: |
Physics, Active galactic nucleus, Stellar population, 010308 nuclear & particles physics, Star formation, Spatially resolved, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Central region, Astrophysics - Astrophysics of Galaxies, Galaxy, Stars, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Control sample, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics |
| الوصف: |
We present spatially resolved stellar population age maps, average radial profiles and gradients for the first 62 Active Galactic Nuclei (AGN) observed with SDSS-IV MaNGA to study the effects of the active nuclei on the star formation history of the host galaxies. These results, derived using the STARLIGHT code, are compared with a control sample of non-active galaxies matching the properties of the AGN hosts. We find that the fraction of young stellar populations (SP) in high-luminosity AGN is higher in the inner ($R \leq 0.5\,R_e$) regions when compared with the control sample; low-luminosity AGN, on the other hand, present very similar fractions of young stars to the control sample hosts for the entire studied range ($1\,R_e$). The fraction of intermediate age SP of the AGN hosts increases outwards, with a clear enhancement when compared with the control sample. The inner region of the galaxies (AGN and control galaxies) presents a dominant old SP, whose fraction decreases outwards. We also compare our results (differences between AGN and control galaxies) for the early and late-type hosts and find no significant differences. In summary, our results suggest that the most luminous AGN seems to have been triggered by a recent supply of gas that has also triggered recent star formation ($t\,\leq\,40\,Myrs$) in the central region.
Comment: 15 pages, 14 figures |
| DOI: |
10.48550/arxiv.1805.08655 |
| URL الوصول: |
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2cf0f6944934fecd8ae92fd568e9304 |
| Rights: |
OPEN |
| رقم الانضمام: |
edsair.doi.dedup.....e2cf0f6944934fecd8ae92fd568e9304 |
| قاعدة البيانات: |
OpenAIRE |