High-resolution ALMA observations of SDP.81. I. The innermost mass profile of the lensing elliptical galaxy probed by 30 milli-arcsecond images

@article{Tamura2015HighresolutionAO,
  title={High-resolution ALMA observations of SDP.81. I. The innermost mass profile of the lensing elliptical galaxy probed by 30 milli-arcsecond images},
  author={Y. Tamura and M. Oguri and D. Iono and B. Hatsukade and Y. Matsuda and M. Hayashi},
  journal={Publications of the Astronomical Society of Japan},
  year={2015},
  volume={67},
  pages={72}
}
We report the detailed modeling of the mass profile of a z = 0.2999 massive elliptical galaxy using 30 milli-arcsecond resolution 1 mm Atacama Large Millimeter/submillimeter Array (ALMA) images of the galaxy–galaxy lensing system SDP.81. The detailed morphology of the lensed multiple images of the z = 3.042 infrared-luminous galaxy, which is found to consist of tens of ≲ 100 pc-sized star-forming clumps embedded in a ∼ 2 kpc disk, are well reproduced by a lensing galaxy modeled by an isothermal… Expand
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