[Speaker 1]
Ryosuke Nagasawa, M1, SOKENDAI, Mitaka（supervisor : Hideo Hanada）
[Title]
Development of software for high-precision LLR data analysis
[Abstract]
We are developing new analysis software for precise determination of lunar orbital/rotational motion and tidal deformation using lunar laser ranging (LLR) observation data.
As the first step of the study, we construct an LLR observation model. This model consists of the lunar orbit and libration obtained from lunar-planetary ephemeris DE430 (provided by NASA JPL), and the other newest physical models compatible with IERS Conventions (2010) such as Earth orientation, solid Earth/Moon tides, and some factors affecting propagation delay. For the purpose of calculating these components precisely, we use the modules of the geodetic data analysis software “c5++” (Otsubo et al., Japan Geoscience Union Meeting 2011). LLR observation data are provided as normal points. In this calculation, there are 3577 points distributed from June 1996 to July 2013, obtained at 4 observatories: Apache Point, Grasse, Matera and McDonald. Comparing the observed and calculated one-way ranges, the mean and the standard deviation of the residuals are about 5.7 cm and 4.8 cm respectively.
The first step has almost finished. Currently we are working on the next step, the integration of lunar motion. This presentation contains the outline of LLR and the current status of the software development, including the details of above-mentioned modeling.

[Speaker 2]
Sumire Tatehora, D1, SOKENDAI, Mitaka（supervisor : Nobuo Arimoto）
[Title]
Morphological studies of high-z massive galaxies
[Abstract]
Thanks to the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDLES) HST/WFC3 imaging with high spatial resolution, we investigate the morphology of galaxies in the distant universe. We select 20 passively evolving galaxies and 586 star-forming galaxies at 1.4＜phot-z＜2.5 in the COSMOS-CANDELS 210 square arcmin field and measure effective radius and Se ́rsic index by using the GALFIT package (Peng et al. 2002). We present the results of size-mass, Se ́rsic index-mass relation and discuss whether it has correlation between galaxy morphology and BzK color.

[Speaker 1]
Oh Daehyeon D2, SOKENDAI, Mitaka（supervisor : Woko Aoki）
[Title]
The widest separation and low mass planetarymass companion(PMC) candidates around DoAr 25
[Abstract]
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[Speaker 2]
Yang Yi M2, SOKENDAI, Mitaka（supervisor : Saeko Hayashi）
[Title]
Direct Imaging of DM Tau in NIR Band
[Abstract]
Circumstellar disks are often observed to be surrounding young stars, especially T Tauri stars. The composition and structure of circumstellar disks have essential effect in the formation of planets. Therefore, investigation of such disks is quite beneficial for us to understand the formation process of the planetary system. In this presentation, I will show the near infrared observation of DM Tau from HiCIAO instrument mounted on Subaru Telescope. This T Tauri star is located in Taurus star formation region which is one of the nearest star formation regions from the Solar System. Hence it is easy to resolve the detailed structure of its disk. I believe this research is quite helpful to figure out the scenario of disk evolution and the ongoing planet formation in that disk.

[Speaker 1]
Min Cheul Hong D2, SOKENDAI, Mitaka（supervisor : Mareki Honma）
[Title]
VERA observatons of SiO masers toward Symbiotic star R Aquarii – Determination of orbital parameters
[Abstract]
Symbiotic stars are now generally understood as binary systems comprising a cool late-type star and a hot compact companion.
Interacting between the components presents a good laboratory for studying variety of physical processes, and their study gives important implications for the binary evolution.
R Aquarii (R Aqr) is one of the closest and most studied symbiotic star, but its orbital parameters are still under debated.
In order to extract the orbital parameters, we have been observing the R Aqr system of the SiO maser with the VERA (VLBI Exploration of Radio Astrometry) which can allows us to conduct precise astrometry of the maser sources.
Here, I will report observational results of the preliminary orbital parameters for R Aqr system.

[Speaker 2]
Onitsuka Masahiro M2, SOKENDAI, Mitaka（supervisor : Tomonori Usuda）
[Title]
Infrared Transit Observations of the Very Young Hot Jupiter CVSO30b
[Abstract]
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[Speaker 1]
Giono Gabriel D1, SOKENDAI, Mitaka（supervisor : Yoshinori Suematsu）
[Title]
Experimental confirmation for CLASP’s spectrograph alignment procedure
[Abstract]
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[Speaker 2]
Onoue Masfusa M1, SOKENDAI, Mitaka（supervisor : Nobunari Kashikawa）
[Title]
High-z Quasar Selection with Hyper Suprime-Cam
[Abstract]
Quasars at high (>6) redshift are one of the best tracers of early Universe,
thanks to its high luminosity and characteristic spectrum.
However, quasars are very rare objects and it is important to establish a method to
select quasars effectively.
Based on the above, I will present the strategy for identifying high-z quasars by using SED fitting (#HSC project 47).
The goal of this study is to effectively isolate high-z quasars from contaminating sources such as brown dwarfs.
We are going to apply SED fitting method for quasar selection along with conservative two-color selection.
I will report the current status of SED fitting code development, and preliminary results of its application.
In addition, I would like to introduce the recently found three z~7 quasars (Venemans+13).

[Speaker 1]
Anjali John K D3, SOKENDAI, Mitaka（supervisor : Suematsu Yoshinori）
[Title]
Temporal evolution of the Sun’s Polar Magnetic Patches as observed with Hinode
[Abstract]
The Sun’s polar region is covered by countless discrete flux elements called as magnetic patches. The magnetic patches are believed to be formed from the remnant magnetic flux from the active latitudes which is transported to the polar region through diffusion and meridional circulation. It is likely that large unipolar patches with magnetic flux >10^18 Mx determine the magnetic polarity of each poles and their total flux is modulated by the solar cycle. It is important to understand the temporal evolution of these large patches to derive information of magnetic activities in the polar region, especially, the mechanism of magnetic polarity reversal. We also like to investigate the interaction between magnetic patches and the polar faculae whose occurrence tends to be associated with the large magnetic patches, according to our previous study. We obtained Hinode/SP and FG data for six hours of the south polar region in March 2013. We will show results obtained from this analysis.

[Speaker 2]
Ayumu Matsuzawa D1, SOKENDAI, Mitaka（supervisor : Satoru Iguchi）
[Title]
Absorbing spectrum in galactic nucleus of M87 from VLBA archive data
[Abstract]
Super Massive Black Hole (SMBH) in Active Galactic Nuclei (AGN) attracts matters to form an accretion disk by its strong gravity. AGN is very bright than normal galaxy due to huge luminosity of accretion disk. In order to emit the huge luminosity, that requires a lot of accretion matter accreting to SMBH. The absorption was seen in spectrum of VLBI observation near SMBH. There are the two possibilities that absorption as synchrotron-self-absorption (SSA) from optically thin region of AGN jet or free-free-absorption (FFA) from cold dense plasma around SMBH. This cold dense plasma (we called FFA plasma) was considered as accreting matter to SMBH. The analysis of FFA around SMBH has been used to investigate this kind of accretion process at very vicinity (~pc-scale) of the BH. The purpose of my research is probing the FFA plasma around SMBH of M87. M87 is one of very important object, because M87 has the second-largest apparent Schwarzschild radius next to SrgA*.In order to probe the FFA plasma around SMBH of M87, we required the absorption spectrum of VLBI observation near SMBH of M87.We make the SED with seven frequencies (0.324, 1.6, 2.2, 4.9, 8.4, 15, 22GHz) on SMBH of M87 from VLBA archive data to confirm the absorption spectrum and the SED shown absorption spectrum.