천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제44권2호
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- Pages.77.1-77.1
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- 2019
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- 1226-2692(pISSN)
The evolution of merger fraction for galaxies in NEP-Wide field
- Kim, Eunbin (Korea Astronomy and Space Science Institute) ;
- Jeong, Woong-Seob (Korea Astronomy and Space Science Institute) ;
- Hwang, Ho Seong (Korea Astronomy and Space Science Institute) ;
- Kim, Seong Jin (National Tsing Hua University) ;
- Goto, Tomotsugu (National Tsing Hua University)
- 발행 : 2019.10.14
초록
We present the results of the merger fraction evolution for galaxies in NEP-Wide field depending on star formation mode and redshift. We select the galaxies which have AKARI 9 ㎛ detections as a sample for large number of galaxies. We use multi-wavelength data from GALEX to Herschel, and Subaru HSC i-band images for analysis. We classify the merger galaxies with using Gini and M20, which are non-parametric calculated by statmorph code. We obtain the total infrared luminosity from the SED modeling with using one band, AKARI 9 ㎛. We find that the merger fractions of galaxies in all different star formation mode increase as the redshift increases. However, with fixed mass range of 10.5 < log(M🞵) < 11.5, the merger fractions of starbursts significantly increase as the redshift increases compared to those of main sequence and quiescent galaxies. We discuss the implications of these results in this poster.
키워드