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Effects of accretion flow on the chemical structure in the inner regions of protoplanetary disks
H. Nomura, Y. Aikawa, Y. Nakagawa +1
We have studied the dependence of the profiles of molecular abundances and line emission on the accretion flow in the hot ($\ga 100$K) inner region of protoplanetary disks. The gas…
Resolving the chemistry in the disk of TW Hydrae I. Deuterated species
C. Qi, D. J. Wilner, Y. Aikawa +2
We present Submillimeter Array (SMA) observations of several deuterated species in the disk around the classical T Tauri star TW Hydrae at arcsecond scales, including detections of…
Molecular Evolution and Star Formation: From Prestellar Cores to Protostellar Cores
Yuri Aikawa, Valentine Wakelam, Robin T. Garrod +1
We investigate molecular evolution in a star-forming core that is initially a hydrostatic starless core and collapses to form a low-mass protostar. The results of a one-dimensional…
Cold CO Gas in Protoplanetary Disks
Yuri Aikawa
In a disk around DM Tau, previous observation of 13CO (J=2-1 and 1-0 transitions) derived the 13CO gas temperature of \sim 13-20K, which is lower than the sublimation temperature o…
Molecular Evolution in Collapsing Prestellar Cores III: Contraction of A Bonnor-Ebert Sphere
Yuri Aikawa, Eric Herbst, Helen Roberts +1
The gravitational collapse of a spherical cloud core is investigated by numerical calculations. The initial conditions of the core lie close to the critical Bonnor-Ebert sphere wit…
Interferometric Observations of Formaldehyde in the Protoplanetary Disk around LkCa15
Yuri Aikawa, Munetake Momose, Wing-Fai Thi +4
Emission from the line of HCO has been detected and marginally resolved toward LkCa15 by the Nobeyama Millimeter Array. The column density of HCO is higher…