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Star formation history of the galaxy merger Mrk848 with SDSS-IV MaNGA

  • Fang-Ting Yuan (a1), Shiyin Shen (a1), Lei Hao (a1) and Maria Argudo Fernandez (a2)

Abstract

With the 3D data of SDSS-IV MaNGA (Bundy et al. 2015) spectra and multi-wavelength SED modeling, we expect to have a better understanding of the distribution of dust, gas and star formation of galaxy mergers. For a case study of the merging galaxy Mrk848, we use both UV-to-IR broadband SED and the MaNGA integral field spectroscopy to obtain its star formation histories at the tail and core regions. From the SED fitting and full spectral fitting, we find that the star formation in the tail regions are affected by the interaction earlier than the core regions. The core regions show apparently two times of star formation and a strong burst within 500Myr, indicating the recent star formation is triggered by the interaction. The star formation histories derived from these two methods are basically consistent.

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References

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Bundy, K., Bershady, M. A., Law, D. R., et al. 2015, ApJ, 798, 7
Cappellari, M. & Emsellem, E. 2004, PASP, 116, 138
Noll, S., Burgarella, D., Giovannoli, E., et al. 2009, A&A, 507, 1793
Serra, P., Amblard, A., Temi, P., et al. 2011, ApJ, 740, 22
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