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Near-Infrared Imaging Polarimetry of Inner Region of GG Tau A Disk
Yi Yang, Jun Hashimoto, Saeko S. Hayashi +51
By performing non-masked polarization imaging with Subaru/HiCIAO, polarized scattered light from the inner region of the disk around the GG Tau A system was successfully detected i…
Three-dimensional Shock Structure of Orion KL Outflow with IGRINS
Heeyoung Oh, Tae-Soo Pyo, Kyle F. Kaplan +17
We report a study of the three-dimensional (3D) outflow structure of a 15$\arcsec$ 13$\arcsec$ area around H peak 1 in Orion KL with slit-scan observations (13 slits…
A Resolved Near-Infrared Image of The Inner Cavity in The GM Aur Transitional Disk
Daehyeon Oh, Jun Hashimoto, Joseph C. Carson +47
We present high-contrast H-band polarized intensity (PI) images of the transitional disk around the young solar-like star GM Aur. The near-infrared direct imaging of the disk was d…
SCExAO and GPI Band Photometry and Integral Field Spectroscopy of the Young Brown Dwarf Companion to HD 1160
Eugenio V. Garcia, Thayne Currie, Olivier Guyon +51
We present high signal-to-noise ratio, precise photometry and band (\gpiwave~m) spectroscopy of HD 1160 B, a young substellar companion discovered from the Gemini NICI…
Radial decoupling of small and large dust grains in the transitional disk RX J1615.3-3255
Robin Kooistra, Inga Kamp, Misato Fukagawa +56
We present H-band (1.6 μm) scattered light observations of the transitional disk RX J1615.3-3255, located in the ~1 Myr old Lupus association. From a polarized intensity image, tak…
Fluorescent H_2 Emission Lines from the Reflection Nebula NGC 7023 Observed with IGRINS
Huynh Anh N. Le, Soojong Pak, Kyle F. Kaplan +17
We have analyzed the temperature, velocity and density of H2 gas in NGC 7023 with a high-resolution near-infrared spectrum of the northwestern filament of the reflection nebula. By…
SEEDS direct imaging of the RV-detected companion to V450 Andromedae, and characterization of the system
K. G. Hełminiak, M. Kuzuhara, K. Mede +49
We report the direct imaging detection of a low-mass companion to a young, moderately active star V450 And, that was previously identified with the radial velocity method. The comp…
A Substellar Companion to Pleiades HII 3441
Mihoko Konishi, Taro Matsuo, Kodai Yamamoto +55
We find a new substellar companion to the Pleiades member star, Pleiades HII 3441, using the Subaru telescope with adaptive optics. The discovery is made as part of the high-contra…
Constraining the Movement of the Spiral Features and the Locations of Planetary Bodies within the AB Aur System
Jamie R. Lomax, John P. Wisniewski, Carol A. Grady +54
We present new analysis of multi-epoch, H-band, scattered light images of the AB Aur system. We used a Monte Carlo, radiative transfer code to simultaneously model the system's SED…
Polarimetry and flux distribution in the debris disk around HD 32297
R. Asensio-Torres, M. Janson, J. Hashimoto +49
We present high-contrast angular differential imaging (ADI) observations of the debris disk around HD 32297 in H-band, as well as the first polarimetric images for this system in p…
Extreme Asymmetry in the Disk of V1247 Ori
Yurina Ohta, Misato Fukagawa, Michael L. Sitko +60
We present the first near-infrared scattered-light detection of the transitional disk around V1247 Ori, which was obtained using high-resolution polarimetric differential imaging o…
High-Contrast Imaging of Intermediate-Mass Giants with Long-Term Radial Velocity Trends
Tsuguru Ryu, Bun'ei Sato, Masayuki Kuzuhara +62
A radial velocity (RV) survey for intermediate-mass giants has been operated for over a decade at Okayama Astrophysical Observatory (OAO). The OAO survey has revealed that some gia…
The SEEDS High Contrast Imaging Survey of Exoplanets around Young Stellar Objects
Taichi Uyama, Jun Hashimoto, Masayuki Kuzuhara +49
We present high-contrast observations of 68 young stellar objects (YSOs) explored as part of the SEEDS survey on the Subaru telescope. Our targets are very young (10 Myr) stars,…
Circumstellar Disks of the Most Vigorously Accreting Young Stars
Hauyu Baobab Liu, Michihiro Takami, Tomoyuki Kudo +11
Young stellar objects (YSOs) may not accumulate their mass steadily, as was previously thought, but in a series of violent events manifesting themselves as sharp stellar brightenin…
Stable and Unstable Regimes of Mass Accretion onto RW Aur A
Michihiro Takami, Yu-Jie Wei, Mei-Yin Chou +11
We present monitoring observations of the active T Tauri star RW Aur, from 2010 October to 2015 January, using optical high-resolution (R>10000) spectroscopy with CFHT-ESPaDOnS. Op…
IGRINS Near-IR High-Resolution Spectroscopy of Multiple Jets around LkH 234
Heeyoung Oh, Tae-Soo Pyo, In-Soo Yuk +18
We present the results of high-resolution near-IR spectroscopy toward the multiple outflows around the Herbig Be star Lk{\Ha} 234 using the Immersion Grating Infrared Spectrograph…
Near-Infrared Imaging Polarimetry of LkCa 15: A Possible Warped Inner Disk
Daehyeon Oh, Jun Hashimoto, Motohide Tamura +48
We present high-contrast H-band polarized intensity images of the transitional disk around the young solar-like star LkCa 15. By utilizing Subaru/HiCIAO for polarimetric differenti…