MC2: Subaru and Hubble Space Telescope Weak-lensing Analysis of the Double Radio Relic Galaxy Cluster PLCK G287.0+32.9

Authors : Kyle Finner, M. James Jee, Nathan Golovich, David Wittman, William Dawson, Daniel Gruen, Anton M. Koekemoer, Brian C. Lemaux, and Stella Seitz

Publication: Astrophysical Journal, 2017 December

Introduction (Kor) : 허블 우주망원경과 수바루 망원경을 이용하여 하늘에서 두번째로 SZ 효과가 큰 PLCK G287.0+32.9 은하단의 암흑물질 연구

Introduction (Eng) : The second most significant detection of the Planck Sunyaev−Zel'dovich survey, PLCK G287.0+32.9 (z = 0.385), boasts two similarly bright radio relics and a radio halo. A key missing puzzle for the merging scenario reconstruction is the underlying dark matter distribution in high resolution. We present a joint Subaru Telescope and Hubble Space Telescope weak-lensing analysis of the cluster. Our analysis shows that the mass distribution features four significant substructures.



First Weak-lensing Results from “See Change”: Quantifying Dark Matter in the Two z ≳ 1.5 High-redshift Galaxy Clusters SPT-CL J2040-4451 and IDCS J1426+3508

Authors : Jee, M. James; Ko, Jongwan; Perlmutter, Saul; Gonzalez, Anthony; Brodwin, Mark; Linder, Eric; Eisenhardt, Peter

Publication: Astrophysical Journal, 2017 October

Introduction (Kor) : 허블 우주망원경을 이용한 고 적색편이 은하단의 암흑물질 함량 결정

Introduction (Eng) : First use of the Wide Field Camera 3 (WFC3) on Hubble to quantify dark matter in two interesting high-z clusters



Star Formation of Merging Disk Galaxies with AGN Feedback Effects

Authors : Jongwon Park, Rory Smith, Sukyoung K. Yi

Publication: Astrophysical Journal, 2017 August

Introduction (Kor) : AGN FB 효과를 고려하면, 충돌하는 두 원반 은하의 별 생성률이 예상보다 적게 증가한다.

Introduction (Eng) : Using numerical hydrodynamics simulations, we studied the effect of AGN feedback on the evolution of merging disk galaxies with various conditions.



Phase-space Analysis in the Group and Cluster Environment: Time Since Infall and Tidal Mass Loss

Authors : Jinsu Rhee, Rory Smith, Hoseung Choi, Sukyoung K. Yi, Yara Jaffe, Geame Candlish, and Ruben Sanchez-Janssen

Publication: Astrophysical Journal, 2017 July

Introduction (Kor) : 우주론적 유체역학 수치모사의 결과를 이용하여, 은하단에 병합한 은하들의 특징등을 위상공간분석을 통해 분석하는 논문입니다.

Introduction (Eng) : Using cosmological hydrodynamic simulations, we provide phase-space diagrams as a tool for understanding cluster environmental effects which can be directly compared with real observations of galaxy clusters. Link


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