Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Lam, Ka Ho"'
Autor:
Chen, Che-Yu, Friesen, Rachel, Li, Jialu, Schmiedeke, Anika, Frayer, David, Li, Zhi-Yun, Tobin, John, Looney, Leslie W., Offner, Stella, Mundy, Lee G., Harris, Andrew I., Church, Sarah, Ostriker, Eve C., Pineda, Jaime E., Hsieh, Tien-Hao, Lam, Ka Ho
The internal velocity structure within dense gaseous cores plays a crucial role in providing the initial conditions for star formation in molecular clouds. However, the kinematic properties of dense gas at core scales (~0.01 - 0.1 pc) has not been ex
Externí odkaz:
http://arxiv.org/abs/2312.12504
Stars form from the gravitational collapse of turbulent, magnetized molecular cloud cores. Our non-ideal MHD simulations reveal that the intrinsically anisotropic magnetic resistance to gravity during the core collapse naturally generates dense gravo
Externí odkaz:
http://arxiv.org/abs/2307.16774
Autor:
Ohashi, Nagayoshi, Tobin, John J., Jørgensen, Jes K., Takakuwa, Shigehisa, Sheehan, Patrick, Aikawa, Yuri, Li, Zhi-Yun, Looney, Leslie W., Willians, Jonathan P., Aso, Yusuke, Sharma, Rajeeb, Sai, Jinshi, Yamato, Yoshihide, Lee, Jeong-Eun, Tomida, Kengo, Yen, Hsi-Wei, Encalada, Frankie J, Flores, Christian, Gavino, Sacha, Kido, Miyu, Han, Ilseung, Lin, Zhe-Yu Daniel, Narayanan, Suchitra, Phuong, Nguyen Thi, Santamaría-Miranda, Alejandro, Thieme, Travis J., Hoff, Merel L. R. van 't, de Gregorio-Monsalvo, Itziar, Koch, Patrick M., Kwon, Woojin, Lai, Shih-Ping, Lee, Chang Won, Plunkett, Adele, Saigo, Kazuya, Hirano, Shingo, Lam, Ka Ho, Mori, Shoji
We present an overview of the Large Program, ``Early Planet Formation in Embedded Disks (eDisk)'', conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The ubiquitous detections of substructures, particularly rings and gaps, in pro
Externí odkaz:
http://arxiv.org/abs/2306.15406
Recent observations indicate that mm/cm-sized grains may exist in the embedded protostellar disks. How such large grains grow from the micron size (or less) in the earliest phase of star formation remains relatively unexplored. In this study we take
Externí odkaz:
http://arxiv.org/abs/2207.14151
Autor:
Jin, Mihwa, Lam, Ka Ho, McClure, Melissa K., van Scheltinga, Jeroen Terwisscha, Li, Zhi-Yun, Boogert, Adwin, Herbst, Eric, Davis, Shane W., Garrod, Robin T.
Chemical models and experiments indicate that interstellar dust grains and their ice mantles play an important role in the production of complex organic molecules (COMs). To date, the most complex solid-phase molecule detected with certainty in the I
Externí odkaz:
http://arxiv.org/abs/2207.04269
With the advent of ALMA, it is now possible to observationally constrain how disks form around deeply embedded protostars. In particular, the recent ALMA C3H2 line observations of the nearby protostar L1527 have been interpreted as evidence for the s
Externí odkaz:
http://arxiv.org/abs/2207.03443
Autor:
Wang, Weixiao, Väisälä, Miikka S., Shang, Hsien, Krasnopolsky, Ruben, Li, Zhi-Yun, Lam, Ka Ho, Yuan, Feng
Misalignment between rotation and magnetic field has been suggested to be one type of physical mechanisms which can easen the effects of magnetic braking during collapse of cloud cores leading to formation of protostellar disks. However, its essentia
Externí odkaz:
http://arxiv.org/abs/2201.08974
Autor:
Thieme, Travis J., Lai, Shih-Ping, Lin, Sheng-Jun, Cheong, Pou-Ieng, Lee, Chin-Fei, Yen, Hsi-Wei, Li, Zhi-Yun, Lam, Ka Ho, Zhao, Bo
Understanding how material accretes onto the rotationally supported disk from the surrounding envelope of gas and dust in the youngest protostellar systems is important for describing how disks are formed. Magnetohydrodynamic simulations of magnetize
Externí odkaz:
http://arxiv.org/abs/2111.04001
Autor:
Lam, Ka Ho, Chen, Che-Yu, Li, Zhi-Yun, Yang, Haifeng, Cox, Erin G., Looney, Leslie W., Stephens, Ian
Polarized dust continuum emission has been observed with ALMA in an increasing number of deeply embedded protostellar systems. It generally shows a sharp transition going from the protostellar envelope to the disk scale, with the polarization fractio
Externí odkaz:
http://arxiv.org/abs/2107.09318
Publikováno v:
MNRAS 492, 3375Z (2020)
The Hall effect is recently shown to be efficient in magnetized dense molecular cores, and could lead to a bimodal formation of rotationally supported discs (RSDs) in the first core phase. However, how such Hall dominated systems evolve in the protos
Externí odkaz:
http://arxiv.org/abs/2009.07796