Isolated Galaxies versus Interacting Pairs with MaNGA

Fernandez, Maria del Carmen Argudo; Yuan, Fangting; Shen, Shiyin; Yin, Jun; Chang, Ruixiang; Feng, Shuai


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 (similar to 2 Gyr) than in the outskirts (similar to 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.

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Título según WOS: ID WOS:000370973800001 Not found in local WOS DB
Título de la Revista: Galaxies
Volumen: 3
Número: 4
Editorial: Multidisciplinary Digital Publishing Institute (MDPI)
Fecha de publicación: 2015
Página de inicio: 156
Página final: 163


Notas: ISI