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15 papers · 2 filters
Spiral Arms in the Asymmetrically Illuminated Disk of MWC 758 and Constraints on Giant Planets
C. A. Grady, T. Muto, J. Hashimoto +71
We present the first near-IR scattered light detection of the transitional disk associated with the Herbig Ae star MWC 758 using data obtained as part of the Strategic Exploration…
Subaru Imaging of Asymmetric Features in a Transitional Disk in Upper Scorpius
S. Mayama, J. Hashimoto, T. Muto +52
We report high-resolution (0.07 arcsec) near-infrared polarized intensity images of the circumstellar disk around the star 2MASS J16042165-2130284 obtained with HiCIAO mounted on t…
Exploring Magnetic Field Structure in Star-Forming Cores with Polarization of Thermal Dust Emission
Akimasa Kataoka, Masahiro N. Machida, Kohji Tomisaka
The configuration and evolution of the magnetic field in star-forming cores are investigated in order to directly compare simulations and observations. We prepare four different in…
Mode identification in the high-amplitude δ Scuti star V2367 Cyg
C. Ulusoy, T. Gülmez, I. Stateva +14
We report on a multi-site photometric campaign on the high-amplitude Scuti star V2367 Cyg in order to determine the pulsation modes. We also used high-dispersion spectroscopy t…
High-Resolution Spectroscopy of Extremely Metal-Poor Stars from SDSS/SEGUE: I. Atmospheric Parameters and Chemical Compositions
Wako Aoki, Timothy C. Beers, Young Sun Lee +8
Chemical compositions are determined based on high-resolution spectroscopy for 137 candidate extremely metal-poor (EMP) stars selected from the Sloan Digital Sky Survey (SDSS) and…
Intermittent maser flare around the high mass young stellar object G353.273+0.641 II: Detection of a radio and molecular jet
Kazuhito Motogi, Kazuo Sorai, Kotaro Niinuma +3
We report the first detection of a radio-continuum and molecular jet associated with a dominant blue-shifted maser source, G353.273+0.641. A radio jet is extended 3000 au along NW-…