Isolated Galaxies versus Interacting Pairs with MaNGA
| Autor: | R. Chang, Shuai Feng, J. Yin, Shiyin Shen, F. Yuan, Maria Argudo-Fernández |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Spiral galaxy Stellar population Star formation lcsh:Astronomy FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Galaxy merger Astrophysics - Astrophysics of Galaxies Central region Galaxy isolated galaxies lcsh:QB1-991 peculiar galaxies interacting galaxies Astrophysics of Galaxies (astro-ph.GA) Astrophysics::Solar and Stellar Astrophysics Spectral analysis Astrophysics::Earth and Planetary Astrophysics Spiral Astrophysics::Galaxy Astrophysics |
| Zdroj: | Galaxies, Vol 3, Iss 4, Pp 156-163 (2015) |
| ISSN: | 2075-4434 |
| Popis: | We present preliminary results of the spectral analysis on the radial distributions of the star formation history in both, a galaxy merger and a spiral isolated galaxy observed with MaNGA. We find that the central part of the isolated galaxy is composed by older stellar population ($\sim$2 Gyr) than in the outskirts ($\sim$7 Gyr). Also, the time-scale is gradually larger from 1 Gyr in the inner part to 3 Gyr in the outer regions of the galaxy. In the case of the merger, the stellar population in the central region is older than in the tails, presenting a longer time-scale in comparison to central part in the isolated galaxy. Our results are in agreement with a scenario where spiral galaxies are built from inside-out. In the case of the merger, we find evidence that interactions enhance star formation in the central part of the galaxy. Comment: 7 pages, 2 figures. Proceedings of the EWASS-2015 special session Sp3, accepted for publication in Special Issue "3D View on Interacting and Post-Interacting Galaxies from Clusters to Voids" of open access journal "Galaxies" |
| Databáze: | OpenAIRE |
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