The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Further Analysis of FLS 1718+59: A Galaxy-Galaxy Gravitational Lens

  • Taak, Yoon Chan (Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program) ;
  • Im, Myungshin (Dept. of Physics & Astronomy, Seoul National University)
  • Published : 2013.10.08
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Abstract

We present new analyses of FLS 1718+59, a galaxy-galaxy gravitational lens system in the Spitzer First Look Survey (FLS) Field. A background galaxy (z = 0.245) is severely distorted by a nearby elliptical galaxy (z = 0.08), which can be interpreted as a result of gravitational lensing. We analyze this system by multiple methods, including ELLIPSE fitting, gravitational lens modeling, and surface brightness fitting. From this analysis, we obtain parameters of the lens galaxy using varying approaches and compare them. In the future, we will conduct SED fitting for the lens galaxy and estimate the stellar mass, and compare this with the total mass of the lens to check the M-L relation.

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